Paper Batteries It turns out making lightweight, bendable, foldable batteries is as easy as putting ink to paper.

Reading the electronic-media narrative as it plays out in many popular tech and news blogs, one would think we are hurtling toward a future where paper is all but unnecessary. But a new development in battery technology could bring paper right back around to its former place of prominence, using it to power the very digital devices -- smartphones, Kindles, laptops, etc. -- that are increasingly replacing print.

By coating regular copier paper in ink made of carbon nanotubes and silver nanowires, Stanford researchers have created highly conductive storage devices that can be bent, folded, and wrapped around other surfaces (energy-storing wallpaper, anyone?). The carbon nanotube ink adheres to the surface of the paper just like normal ink would, making paper the ideal vehicle for these thin, lightweight storage devices.

Since earlier research has shown that silicon nanowire batteries can be up to 10 times more powerful than lithium-ion batteries, researchers are hopeful the paper batteries will be able to power everything from automobiles to laptops to phones with smaller, lighter, more powerful and longer-lasting batteries. The method can also create simple supercapacitors with large surface areas that allow rapid energy discharge, a requirement for automobile power sources that lithium-ion batteries have trouble satisfying.

All of that would just be more pie-in-the-sky battery research if it were not for this: the paper battery technology is basically market-ready. That's not to say that researchers won't need some time to iron out the kinks, but power sources based on this technology could be commercialized very soon compared to a lot of the nano-noise circulating in scientific circles. The fact that the process is also very cheap means devices like these could be powering your paper-replacing devices sooner than you think. Get the details straight from Stanford's Yi Cui below.

[PhysOrg, Forbes]

17 Comments

I would rather just buy the ink and paper myself. That way I can custom make "cut to fit" batteries for my little tinkerings around the house.

Fantastic now we can skin airplane wings with this and fly electric

Coooooooool.

freudianslipnslide.blogspot.com

Lithium ion batteries are used in rc helicopters and planes , these batteries could replace those allowing for lighter weight designs and longer flight times , currently a 11.1 volt 2200 mAh lithium cell weighs around 200 grams and flys a small heli for about 4 min .
4 minutes of fun isn't much and hobby flyers are desparate for better technology

ill buy this. for my bombs...

lnwolf41 This is great, now instead of feeling guilty about using paper to make books and sending faxes we can denude the forest to make batteries. Works for me.
This is a good thing since we have tree farms specificly for paper making.

This may be the start of something big, hopefully we can follow the development of this novel idea. I remember when thin-film photovoltaic cell (TFPV), just came out with a novel idea -- printing them.

"The silicon is mainly deposited by chemical vapor deposition, typically plasma-enhanced (PE-CVD), from silane gas and hydrogen gas. Other deposition techniques being investigated include sputtering and hot wire techniques.

The silicon is deposited on glass, plastic or metal which has been coated with a layer of transparent conducting oxide (TCO).

High speed roll-to-roll printing of polymer solar cells may potentially produce as many square meters of solar cells in an hour as a crystalline Silicon solar cell plant produces a year."

www.en.wikipedia.org/wiki/Thin_film_solar_cell

I'm sure there will be other methods to deposit carbon nanotubes for efficient electrical storage devices but this is just the beginning...

Nice idea, wonder how much serface area has to be covered to make enough for a 9volt batt?

I also imediately thought of thin skin solar.

If you are going to make a roof covering, it needs to be durable. Adding a few layers of battery ink - substrate (likely not actual paper), between layers of non-conductive material would allow you to add thickness (and durability) to your thin skin solar and add storage for electricity at the same time (rather than a standard bulky battery bank).

Being able to attach this to roofs, over existing shingles, in 1/2 to 3/4 inch thick layers like tar paper is often used today, would allow for a quick, cheap retro-addition of solar elements to the home.

Well imagine if we can compine this with solar technology? this would be quiet a astonishing feat in energy storage. Plus if we can make the transfers of energy more effiecnt then there will be less energy lost during the prosse. The aplications are going to be endless if we can mass produce these. I would suggest inversting in paper, and the ink.

Could we make this paper with hemp?

This may just rejuvenate the newspaper industry. The paper could provide power for e-ink. It might be possible for a single sheet of paper to replace the multi-page newspaper. The 'Daily Prophet' from J.K. Rowlings comes to mind. Animated ads, videos attached to news items, use scrolling to go to other pages. Newspapers may even download new editions to subscribers if a way of incorporating RFID and wireless reception into the paper can be made.

Indulge your imagination if you synthesize this new battery with this new solar technology coming out of Harvard:
(link is an accessible version of the findings - more professional publications available)

http://www.scientificblogging.com/intellectual_clutter/blog/plastic_solar_cells_science_expectations_and_challenges_0

Lipomi is on to something here!

Congratulations Stanford Team!

What is the cost and the scalability potential of this ink?

Welcome to the future. You will be painting your walls with paint that will be photovoltaic and battery also!

Decentralization of energy resourses will be a beneficial nanotechnology for human kind.

The first thing that comes to mind after somebody mentioned airplanes - is it will now be much EASIER to build human carrying electric flyers. They can peddle the generator up before takeoff, store the energy in the wings, besides the solar to supplement on the wings (creating 100's of watts), and hobbyists can fly around a small airfield designed for hobbyists for minutes at a time - or catch a draft and stay aloft for hours.

Maybe we'll see the 1st cross-country human powered flyer before 2020. If people can get enough efficient lift, they could start approaching the speeds of condors (over 100 mph), by climbing to high altitudes then diving and pulling up. Skyways for human powered and low cost electric flyers may become a future trend we should keep an eye on, as increases in efficiency are going to allow it. These will be the new "bicycles" of the 21st century. It may even eliminate most car traffic for long commutes or intercity. Why go 25 mph in rush hour when you can go 100 mph on auto pilot? Instead of off ramps, you have mass landing strips at points of interest.

All all this change, from just making stronger and lighter paper batteries.

WHOA YEAH!!!!!!!!!!!!!!!
Now how much do these things cost ?!?!
THANKS A BILLION, STANFORD UNIVERSITY!!!!!!!

Maybe we'll see the 1st cross-country human powered flyer before 2020. If people can get enough efficient lift, they could start approaching the speeds of condors (over 100 mph), by climbing to high altitudes then diving and pulling up. Skyways for human powered and low cost electric flyers may become a future trend we should keep an eye on, as increases in efficiency are going to allow it. These will be the new "bicycles" of the 21st century. It may even eliminate most car traffic for long commutes or intercity. Why go 25 mph in rush hour when you can go 100 mph on auto pilot? Instead of off ramps, you have mass landing strips at points of interest.



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