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Researchers Spray-Paint Batteries Onto Almost Any Surface

Soulskill posted about 2 years ago | from the graffiti-just-got-way-more-fun dept.

Power 92

Warmlight writes "Rice University researchers have created a type of lithium-ion battery that can be spray-painted onto most surfaces. 'Their batteries, outlined in Scientific Reports (abstract), are made up of five separate layers, each with its own recipe — together measuring just 0.5mm thick. To demonstrate the technique, the team painted batteries onto steel, glass, ceramic tile and even a beer stein.' What do you think this will do for future form-factors? Maybe a form-fitting PipBoy-style device that doesn't weigh 30lbs?"

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92 comments

This news is SHOCKING! (1)

For a Free Internet (1594621) | about 2 years ago | (#40496449)

Everyone knows that batteries cause Cancer. I will not allow Obama or any Italians to spray-paint my house! My house belongsto me, and my wife, but me especially. How are you today? See you in CHURCH!!!!!

my dick (-1)

Anonymous Coward | about 2 years ago | (#40496451)

spray paint my dick and ill super charge your girlfriend

Re:my dick (-1)

Anonymous Coward | about 2 years ago | (#40496911)

This is slashdot. Do you really think we have girlfriends?

Re:my dick (0)

Teresita (982888) | about 2 years ago | (#40497371)

Well if you did, and she complains you're spending too much time on Slashdot, you can just spray some battery on her Brass Buzzing Thing and go back to your Linux talk or whatever you were doing.

Re:my dick (-1)

Anonymous Coward | about 2 years ago | (#40497291)

spray paint my dick and ill super charge your girlfriend

i don't think she will like that one bit.

ever stick your tongue to a 9v battery? hurts, doesn't it?

the vagina is wet like your tongue and at least as sensitive. i don't think the ladies will be clamoring for this one.

Re:my dick (1)

Khyber (864651) | about 2 years ago | (#40500413)

I can tell you don't work in a porno store.

Plenty of women buying Violet wands to make their man's penis electrified for sex.

Hasn't this been done before? (2)

regular_guy (1979018) | about 2 years ago | (#40496543)

I'm actually surprised to see this coming out from Rice, wasn't this stuff being done 20 years ago by another Rice group? Maybe additional substrates this time? Looks like a review of their references may be necessary.

Re:Hasn't this been done before? (3, Funny)

SuperKendall (25149) | about 2 years ago | (#40496597)

The team at Rice just finally came out of the room after twenty years to break for lunch outside, and casually mentioned it to a passerby before they went back in.

In another twenty years expect batteries formed from pure thought.

Re:Hasn't this been done before? (5, Funny)

Farmer Tim (530755) | about 2 years ago | (#40496913)

In another twenty years expect batteries formed from pure thought.

Least reliable power source ever.

Re:Hasn't this been done before? (1)

fluffythedestroyer (2586259) | about 2 years ago | (#40497155)

Put some porn in front of my eyes and my thoughts will go nuts...expect some major battery recharge if its connected to my thoughts

Re:Hasn't this been done before? (1)

Farmer Tim (530755) | about 2 years ago | (#40497301)

Put some porn in front of my eyes and my thoughts will go nuts

Um...which definition of "nuts" applies here? Just want to be sure we're on the same page...

Re:Hasn't this been done before? (1)

fluffythedestroyer (2586259) | about 2 years ago | (#40497431)

crazy...Dude, I'm married so that should explain

Re:Hasn't this been done before? (0)

Anonymous Coward | about 2 years ago | (#40497523)

crazy...Dude, I'm married so that should explain

it's okay, everybody does something stupid once in a while.

Re:Hasn't this been done before? (1)

Farmer Tim (530755) | about 2 years ago | (#40497683)

That doesn't preclude anything...it's a wide and varied world.

But it proves your point: even the mention of porn gets the mind ticking over.

Re:Hasn't this been done before? (1)

a13coach (1012803) | about 2 years ago | (#40500515)

Major battery re-charge for what all of 10 seconds?

Re:Hasn't this been done before? (1, Funny)

MobileTatsu-NJG (946591) | about 2 years ago | (#40497785)

Least reliable power source ever.

Oh.. I dunno... Have Slashdot put a story up about malware in Linux and watch the lights get brighter as people spin it as proof of how great OSS really is!

Re:Hasn't this been done before? (1)

Farmer Tim (530755) | about 2 years ago | (#40498037)

Wouldn't that generate positrons?

Re:Hasn't this been done before? (2)

furbearntrout (1036146) | about 2 years ago | (#40499653)

In another twenty years expect batteries formed from impure thought.

Most reliable power source ever.

FTFY

Re:Hasn't this been done before? (0)

Anonymous Coward | about 2 years ago | (#40497073)

Dude, all lunches at Rice are outdoors. Preferably a To Go sandwich, chips, and draft from Valhalla. Sit anywhere there's grass.

Unless it's raining (104 days a year), or bird season.

Don't think so (1)

SuperKendall (25149) | about 2 years ago | (#40497195)

All my lunches were in the computer labs (or college common rooms) thank you very much.

Re:Don't think so (0)

Anonymous Coward | about 2 years ago | (#40497285)

Sorry to hear. We we're outside as much possible. But then I was a math major, so "the lab" was everywhere.

Re:Hasn't this been done before? (2)

mlts (1038732) | about 2 years ago | (#40497311)

I'd just be happy with a battery that 1/2 to 1/10 of the energy volume density of gasoline, and can be scaled up.

That way, the Otto cycle engines can be chucked for electric motors which don't have energy loss due to exhaust or needless heat.

For RVs, it would allow for the rig to be completely electric. No loud generators, just use a high capacity inverter that can handle the 60 or so locked rotor amps from an A/C, and that is that. Then when you get to home or storage, plug the RV into shore power to trickle charge.

Re:Hasn't this been done before? (0)

Anonymous Coward | about 2 years ago | (#40497779)

I'd just be happy with a battery that 1/2 to 1/10 of the energy volume density of gasoline

Ever raise kids?

Re:Hasn't this been done before? (1)

oracleofbargth (16602) | about 2 years ago | (#40498677)

They better not give a battery with that high an energy density the same form factor as a 9volt battery, or he might not have kids for long.

Re:Hasn't this been done before? (5, Funny)

Farmer Tim (530755) | about 2 years ago | (#40498715)

I'd just be happy with a battery that 1/2 to 1/10 of the energy volume density of gasoline

Ever raise kids?

No...how do they compare to gasoline for energy density?

Re:Hasn't this been done before? (3, Funny)

Anonymous Coward | about 2 years ago | (#40499633)

You can graph it, but it looks kind of weird. At newborn stage, the amount of internal energy is somewhat low - not for lack of capacity, just not much charge yet. They charge up in a couple of months though, and AMOUNT of energy remains constant from that point forward. What changes is the form factor.

When the form is small, the energy density is surprisingly high - easily a match for gasoline. (And sometimes might want to take a match to gasoline, but that's a different issue.) Difficult to harness this capacity though. As the form grows larger though, the density drops until it seems there's barely enough to power the form off the bed in the morning.

So... across the lifetime of the container, there's a sharp spike in density early, then relatively smooth (but noticeable) decline until it's no longer useful in powering even a small lawn mower or vacuum cleaner.

Re:Hasn't this been done before? (0)

Anonymous Coward | about 2 years ago | (#40500017)

Biomass rates at about 7500 BTUs per pound once water is removed and gasoline is 18400 BTUs per pound. Considering we're 60% water thats 7500/18400 * .6 which comes out to about a quater. So kids have about 1/4th the energy density of gasoline and if you had ever raised them you would know they were a great energy source.

Re:Hasn't this been done before? (1)

Guignol (159087) | about 2 years ago | (#40503027)

Please check your math again, you got the wrong sign when evaluating the divergence
Anyway, just physical/parental intuition will let you know that this is an energy sink, not source :)

Re:Hasn't this been done before? (0)

Anonymous Coward | about 2 years ago | (#40497603)

Listen to this Quirks & Quarks episode: Brain Power
http://podcast.cbc.ca/mp3/podcasts/quirks_20120623_81427.mp3

Re:Hasn't this been done before? (2)

fluffythedestroyer (2586259) | about 2 years ago | (#40496829)

It tells it on their link [rice.edu] here in the article. I'm pretty amazed by this...seems like a very good thing.

In the first experiment, nine bathroom tile-based batteries were connected in parallel. One was topped with a solar cell that converted power from a white laboratory light. When fully charged by both the solar panel and house current, the batteries alone powered a set of light-emitting diodes that spelled out “RICE” for six hours; the batteries provided a steady 2.4 volts.

The researchers reported that the hand-painted batteries were remarkably consistent in their capacities, within plus or minus 10 percent of the target. They were also put through 60 charge-discharge cycles with only a very small drop in capacity, Singh said.

Re:Hasn't this been done before? (1)

Anne Thwacks (531696) | about 2 years ago | (#40498289)

So if you charge them every day, they last two months. Great. That will power my mobile phone!

Oh, wait ...

Re:Hasn't this been done before? (1)

The Grim Reefer (1162755) | about 2 years ago | (#40498667)

They were also put through 60 charge-discharge cycles with only a very small drop in capacity,

So if you charge them every day, they last two months.

How did you come to that conclusion? Under the described conditions they will last for two months with only a small drop in capacity at the end of the time period. Presumably they will last considerably longer than that before the end of their usable life. It all depends on how much the capacity drops off. But in no way did the OP state they were unusable after 60 recharge cycles.

Will make Kindles and iPhones thinner (1)

cpu6502 (1960974) | about 2 years ago | (#40498257)

Spraypaint the cathode on the back of the screen, and the anode on a second piece of ceramic, put them together, and done. That's the battery. Awesome!

Reminds me of the "All Spark" (1)

realsilly (186931) | about 2 years ago | (#40496553)

How would it connect?

Re:Reminds me of the "All Spark" (1)

Farmer Tim (530755) | about 2 years ago | (#40496787)

Mask terminal areas and use conductive paint. Seems easy enough.

Okay but... (2, Insightful)

Chas (5144) | about 2 years ago | (#40496585)

That's great and everything. But what kind of capacitance can they get out of these? And do we have any idea about the lifespan and durability of this process?

It'd be great to get away from huge battery columns or battery blocks in the trunk/engine area, or staying with them and using this to augment them and raise the top range of the vehicles.

But until there's more specific information, this is "interesting" but not very helpful.

Re:Okay but... (0)

Anonymous Coward | about 2 years ago | (#40496885)

That's why this is "research" and "demonstration." If you don't want to see interesting technology in it's early stages of development, perhaps /. is not for you?

Re:Okay but... (2)

KhabaLox (1906148) | about 2 years ago | (#40497035)

But until there's more specific information, this is "interesting" but not very helpful.

http://www.nature.com/srep/2012/120628/srep00481/full/srep00481.html [nature.com]

There's a direct link to the more specific information linked to in TFA. There's even 7 graphs showing .... something I don't understand.

Also, you understand there is always a gap between laboratory research and industrial application, right? When Smalley and Koto synthesized buckminsterfullerene the practical applications weren't immediately realized, but now we have nanotubes used in microscopes, molecular filters and semi-conductors. [ieeeghn.org]

Re:Okay but... (3, Informative)

DrVomact (726065) | about 2 years ago | (#40497043)

That's great and everything. But what kind of capacitance can they get out of these?

As little as possible, one hopes, though I've never heard of parasitic capacitance [wikipedia.org] as a major consideration in battery design. But when they get down to spray painting them on surfaces, who knows? Certainly the designers of any non-trivial circuit that is sprayed onto a surface will have to deal with this phenomenon.

Re:Okay but... (0)

Anonymous Coward | about 2 years ago | (#40497983)

I think he was probably asking about capacity, not traditional electrical capacitance.

or at least, I'm personally far more interested in how many amp-hours than I am in parasitic farads.

Re:Okay but... (0)

Anonymous Coward | about 2 years ago | (#40500231)

Actually, you would want a higher capacitance, but then again decoupling caps are usually used for circuits already.
A higher capacitance would help the battery to lower its impedance for AC loads. (think switch mode power supplies, pulse loads etc)

taggers (1)

Anonymous Coward | about 2 years ago | (#40496607)

painted batteries onto steel, glass, ceramic tile and even a beer stein.

Fucking taggers.

Re:taggers (4, Interesting)

wierd_w (1375923) | about 2 years ago | (#40496903)

Now imagine 2 more techs, and tagging will be a sight indeed!

Just need spraypaint photocells, and spraypaint Oleds.

Booyah. Neon tagging.

Re:taggers (0)

Anonymous Coward | about 2 years ago | (#40497367)

Dunno about photocells, but i have seen spray on antennas. Could perhaps tap into EM fields somehow.

Re:taggers (0)

Anonymous Coward | about 2 years ago | (#40499627)

Spray painted photocells were done in the late 1970's, by a gov't agency. Thin, and worked. (although had less capacity than regular batteries at the time.)

recharge or paint a new one (0)

Anonymous Coward | about 2 years ago | (#40496619)

Singh said the batteries were easily charged with a small solar cell.

Or, you can just paint a new one,...

Clever (-1)

Anonymous Coward | about 2 years ago | (#40496633)

I see a lot of applications for this if the capacity can be expanded.

Why is India in such a bad state when there are so many smart Indians?

Re:Clever (1)

Anonymous Coward | about 2 years ago | (#40496795)

Because all the smart Indians are looking for possibilities for making their dreams come true. When in your home country the stupid try to pull you down and there are more of them, what would you do? I've seen it myself but in my own country.

Re:Clever (1)

fluffythedestroyer (2586259) | about 2 years ago | (#40496893)

Your trying to pull us down you mean !

Re:Clever (4, Insightful)

Iskender (1040286) | about 2 years ago | (#40497415)

Why is India in such a bad state when there are so many smart Indians?

High difficulty level. I live in Finland which has been called "the least failed state in the world". This is nice and all but anyone trying to improve India is dealing with something like 250 times the population, a thousand languages and cultures (probably an understatement) and a warm climate which will give you a great variety of diseases whenever it feels like it. There's also the whole mutual hate thing with Pakistan.

Given the circumstances India seems like a surprising success to me. I hope they can keep it up.

Re:Clever (1)

Burning1 (204959) | about 2 years ago | (#40497953)

From what I gather, India is also dealing with massive levels of political corruption.

Re:Clever (3, Insightful)

Shadow of Eternity (795165) | about 2 years ago | (#40498219)

The problem is that the citizenry suffers from widespread crushing poverty and lack of basic necessary services to maintain a developed society because of an incredibly unbalanced distribution of wealth, constant abuse by megacorporations who take advantage of vast swaths of land, resources, and the workforce without any interference and in some cases active assistance from an incredibly corrupt government that has practically institutionalized bribery, grift, and nepotism all of which is constantly being besieged on all sides by a backwards ignorance-worshipping violent religious group that wants to drag the country back to the stone age.

Meanwhile in India they've got many of the same problems...

Re:Clever (1)

camperdave (969942) | about 2 years ago | (#40499325)

I see a lot of applications for this if the capacity can be expanded.

Why is India in such a bad state when there are so many smart Indians?

There are over a billion people in India. The smart ones you meet may just be a statistical anomaly.

Outside usage (1)

fluffythedestroyer (2586259) | about 2 years ago | (#40496709)

What about outside usage. Will the sun affect the color of the paint thus have any consequences to the performance of the batterie just like it did (I don't know if it still does..last news it didnt) with solar panels over time ?

Oh, cmoe one (4, Funny)

geekoid (135745) | about 2 years ago | (#40496725)

There are two very important questions that should have been answered:

1) How much power are the getting from the Beer Stein in the picture.

2) What beer is in the stein.

Re:Oh, cmoe one (1)

KhabaLox (1906148) | about 2 years ago | (#40496831)

If memory serves, Pearl was the beer of choice at Valhalla, the Graduate Student pub in the basement of the Chemistry building. Yes, Rice grad students are that poor.

Re:Oh, cmoe one (2)

IdolizingStewie (878683) | about 2 years ago | (#40497227)

Mostly St. Arnold's these days. The price has gone up though. $1 now. I think you can still get shitty beer for 75c though.

Re:Oh, cmoe one (0)

Anonymous Coward | about 2 years ago | (#40497447)

Compared to just about any student bar in Britain, that's criminally cheap. We're paying upwards of £2.00 for a cask ale - read $3.00.

Re:Oh, cmoe one (1)

IdolizingStewie (878683) | about 2 years ago | (#40499431)

The price is a bit deceptive. They don't sell it by the pint - the cups are about half-size. Still significantly cheaper though. The bartenders are all volunteers, working for free beer.

Re:Oh, cmoe one (1)

KhabaLox (1906148) | about 2 years ago | (#40498253)

I'll bet their getting a good deal on the St. Arnold's, as the guys who started the brewery are Rice grads. I interviewed one of them for a "Dream Career" newsletter article when I was working at the Career Services Center.

Re:Oh, come on [spelling fixed to presumed intent] (4, Insightful)

DrVomact (726065) | about 2 years ago | (#40497151)

There are two very important questions that should have been answered:

1) How much power are the getting from the Beer Stein in the picture.

2) What beer is in the stein.

3) Are they also working on a spray-paintable Peltier cooler [wikipedia.org] so that we can keep our beer cold and our hands warm at the same time?

Re:Oh, come on [spelling fixed to presumed intent] (1)

Bob the Super Hamste (1152367) | about 2 years ago | (#40497573)

That would be awesome.

Re:Oh, cmoe one (1)

camperdave (969942) | about 2 years ago | (#40500129)

There are two very important questions that should have been answered:

1) How much power are the getting from the Beer Stein in the picture.

2) What beer is in the stein.

A third question was on my mind: "What the blazes is a PipBoy?"

Re:Oh, cmoe one (1)

Eponymous Hero (2090636) | about 2 years ago | (#40500585)

oh dude, you poor thing. play fallout 3 or fallout: new vegas. the other fallouts weren't as good, in just about everyone's opinion.

Surprising amount of power (5, Insightful)

Grayhand (2610049) | about 2 years ago | (#40496783)

I was expecting a few minutes at best so storing enough to run LED lights for 6 hours was impressive. The number of charge discharge cycles is a major question. What intrigues me is pairing this with spray on solar cells so you end up with a coating that collects and stores power. Imagine light poles that collect and store power then discharge it at night with no visible wires or solar cells. Also roofing tiles that collect and store energy. The real trick would be getting the life cycle to match solar cells which is actually quite long. Traditional cells wouldn't come close but pairing this with nano technology might make the cells more durable. Either way it's interesting technology. Ultimately though what it's likely to do is create devices that are completely disposable since the batteries are fully intergrated.

Torture savings (0)

Anonymous Coward | about 2 years ago | (#40496811)

This will save the money normally spent on attaching electrodes to the balls. Direct connection!

leyden jar? (1)

Kenja (541830) | about 2 years ago | (#40496897)

Isn't this more or less the idea behind a leyden jar? If so, are they not more like capacitors then batteries?

Re:leyden jar? (1)

Anonymous Coward | about 2 years ago | (#40496979)

Leyden jar stores energy in the field created by a capacitor. Batteries undergo chemical changes to store/discharge energy. Storage density is much greater for a battery.

Now all we need is ... (1)

PPH (736903) | about 2 years ago | (#40496899)

... spray-on LEDs (OLEDs?) and spray on PV cells.

Put all this into a can and we'll have some really interesting tagging sprayed onto everything.

Re:Now all we need is ... (1)

Eponymous Hero (2090636) | about 2 years ago | (#40500605)

electric light graffiti. brilliant. literally.

Beer stein on Batteries (1)

sl4shd0rk (755837) | about 2 years ago | (#40496933)

I think a blinking LED on the top would be quite handy.

Self-cooling beer stein (0)

Anonymous Coward | about 2 years ago | (#40496957)

Patent pending, you all saw it here first!

Recycling ? (1)

ColdCat (2586245) | about 2 years ago | (#40497085)

Paint battery why not, specially if it helps to manufacture special shapes for special needs.
But what about recycling if every product have different battery shape with some on metal, other on ceramic or plactic...

Great news! (0)

Anonymous Coward | about 2 years ago | (#40497213)

So Kim Kardashian can be usefull?

Self chilling beers (1)

Anonymous Coward | about 2 years ago | (#40497419)

This is fantastic! Beer cans or bottles can be made with their own power supply for self chilling. Never again will we need to suffer from WBS (warm beer syndrome).

Bad idea (1)

pointyhat (2649443) | about 2 years ago | (#40497507)

I can't see a use for this other than to create more industrial waste that is a pain in the butt to deal with. Whatever you spray it on has a defined shelf life then with no prospect of repair.

Re:Bad idea (3, Interesting)

TheSkepticalOptimist (898384) | about 2 years ago | (#40497937)

Name 5 things that you can buy today that can remain in use for 20 years through repairs. Even if you can, any of those 5 thing you actually want after 20 years?

Yeah, I agree, being able to maintain and repair something should be better valued then disposable products but that is not the reality we live in. Even cars have a shelf life these days, whether through component failure or a failure to remain in style.

Instead there are many, many, many opportunities for companies to recycle and recover components and materials.

And ultimately, what is wrong with waste?

Seriously, waste disposable is simply a social issue. Nobody likes waste. They don't want a landfills in their backyards. Municipalities do not want to invest money to build more or maintain existing landfills. They don't want the headache of trying to find more land for a dump. Its probably one of the stupidest social issues in existence because we all generate waste, even the best of us, yet nobody wants to deal with it. So thus we assume waste is bad.

But I think that in the very near future people are going to look at waste like its a gold mine. Think of all the hydro-carbons locked in a landfill. Think of all the metal and aggregate materials that are locked away in a landfill. It may not be economically viable to "mine" a landfill currently as there are cheaper and easier ways to extract the raw materials we need for our everyday consumption, but one day it will become profitable to delve back into landfills to sort and extract its valuables.

So municipalities should invest heavily in recycling, recovery, and YES, even landfills regardless of the headaches because there is a huge potential for many cities to be sitting on a goldmine's worth of recoverable materials in the very near future. There are companies already out there that can turn garbage into energy and reclaim metals and aggregate materials using plasmification, and they produce emissions 10 times better then even strict California laws would allow. But the moment a city wants to store a bit of garbage somewhere it becomes this big social headache because of all the greenies thinking the world is going to end when another dump is created.

So whatever, spray my batteries directly on the device and when I am done, if nobody wants to buy it used, if there are no electronic recyclable programs to take it back, then dump it, period. In all likelihood its going to be reclaimed eventually.

The era of grabbing a screwdriver to tinker with and fix a broken device is pretty much over with as we head toward more micronization of components and faster automated manufacturing processes. But I don't think we have to worry about more disposable items as I don't believe this is anything more then a social issue arising from unwarranted green guilt because economically and even environmentally its going to be very attractive to recover materials from landfills rather then hunting around the planet looking for scarce raw materials.

Re:Bad idea (3, Interesting)

pointyhat (2649443) | about 2 years ago | (#40498389)

Well it's only June. I don't buy that much, but when I do I make sure I don't buy a hunk of shit that needs replacing every 5 minutes, so 5 things I've bought new in the last 10 years which will still be going in 20 years FROM NOW through repair and replacement:

1. Land Rover Defender TD5. Definitely want this after 20 years. This replaced my 30 year old one. Repairable.

2. Maglite LED torch. Definitely want this after 20 years. Repairable.

3. Aga cooker. Definitely want this after 20 years. Repairable.

4. Singer 4423 sewing machine. Definitely want this after 20 years. Repairable.

5. OPL frame dryer. Definitely want this after 20 years. Repairable

There's not excuse to buy disposable shit.

Re:Bad idea (2)

knarf (34928) | about 2 years ago | (#40499889)

Name 5 things that you can buy today that can remain in use for 20 years through repairs.

Cars, bicycles, kitchen appliances, HVAC equipment, anything made of cast iron (which includes all my cookery stuff), need I go on?

The era of grabbing a screwdriver to tinker with and fix a broken device is pretty much over with as we head toward more micronization of components and faster automated manufacturing processes.

Not true, it just means you'll be repairing stuff by replacing functional units (''the power supply module') instead of components ('that broken FET in the power supply'). I do this regularly to great effect.

Of course there are things which just can not be repaired by the average hacker - hard drive head assemblies come to mind. The big 'but' here is that once it gets common enough for repairs to need dust-free environments, a dust-free enclosure will become standard hacker equipment. It is not like building one of these is that much effort, I just have not felt the need yet.

In short, as long as stuff can be broken into individual functional units it can be repaired. It might be that the amount of function contained in one unit increases (discrete components -> 74XX TTL/40XX CMOS - > LSI/VLSI -> SoC -> ?) but even in the latter case it is possible - and sometimes worthwhile - to replace broken components.

Re:Bad idea (1)

pclminion (145572) | about 2 years ago | (#40506277)

And ultimately, what is wrong with waste?

It's a thermodynamics issue. Order turning to disorder. The rate at which we can recover thermodynamic order is limited by the power of sunlight. We should not contribute to entropy more than is necessary, because we'll have to wait to recover order. For instance it takes millions of years to replenish fossil fuel stores.

Home Power Storage (1)

Bob the Super Hamste (1152367) | about 2 years ago | (#40497701)

One use that sprung to my mind for this would be for power storage at home if one wanted to go renewable. You wouldn't need to figure out where to put the battery bank and when the capacity of the painted on batteries gets to low you just repaint your house.

I see a few problems with this (4, Interesting)

Jaktar (975138) | about 2 years ago | (#40497703)

1. It removes the ability to have a drop in spare (i.e. is not user replaceable.)

2. The "packaging" they refer to is also a vital part of the mechanical integrity of a battery. Mechanical integrity is kind of important.

3. Spraying a battery directly to the case of a device ensures that the full force of any mechanical shock is applied to the battery as well.

All of this together makes me believe that the only use this could have is for relatively small items that you do not intend to move around.

Re:I see a few problems with this (2)

Anne Thwacks (531696) | about 2 years ago | (#40498391)

If it is sprayed on to plastic or cardboard, then I dont think the packaging is a problem. Just think, your cornflake packet can power LEDs that flash "Cornflakes" until you finish the packet! How socially useful is that!

(Just posting this to disclose it publicly, and ensure no one can patent the idea)

Re:I see a few problems with this (0)

Anonymous Coward | about 2 years ago | (#40499559)

Just think, your cornflake packet can power LEDs that flash "Cornflakes" until you finish the packet!

I'm picturing a box of cornflakes that starts on fire when punctured and I'm really enjoying the image.

Re:I see a few problems with this (0)

Anonymous Coward | about 2 years ago | (#40500287)

If it is disposable, then why bother with a rechargeable battery chemistry as a non-rechargeable one can be made more efficiently and cheaply.

Re:I see a few problems with this (0)

Anonymous Coward | about 2 years ago | (#40499211)

C'mon dude, open your mind.

Re:I see a few problems with this (1)

mattr (78516) | about 2 years ago | (#40501923)

It is also difficult to recycle the component materials.

The Network is the Computer (1)

lysdexia (897) | about 2 years ago | (#40498657)

The Battery is the Vibrator.

30lbs is fine (0)

Anonymous Coward | about 2 years ago | (#40498781)

Just increase your strength when you level up, it's no problem. You don't need hacking skills anyway!

Re:30lbs is fine (1)

Eponymous Hero (2090636) | about 2 years ago | (#40500653)

no need. everyone on slashdot already has the nerd rage perk. strength is maxed.

Unused Space as Energy Storage (0)

Anonymous Coward | about 2 years ago | (#40505667)

A housing or body usually usually does not serve much purposes other than mechanical support to the interior, heat dissipation or design. Given this battery is practically usable without much cooling or heating it would become a smart way of using the case itself to store the energy. To make it "any" shape is perfect versus reserving much space for a block shaped battery and it can allow for a better weight distribution of devices. Now it depends on how much capacity it harnesses and how it can be applied to certain shapes.

Is it capable of being used with conductive base material?

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