[Metalab] led throwies with biobatteries

[Benjamin Klemencic]

On 23.11.2010 11:26 PM, Bernhard Kuemel wrote:
> On 11/23/2010 11:20 PM, Michael Bauer wrote:
>> On Tue, Nov 23, 2010 at 10:50:19PM +0100, Bernhard Kuemel wrote:
>>> On 11/23/2010 09:45 PM, Sven Guckes wrote:
>>>> * Damian Stewart <damian.ml at frey.co.nz> [2010-11-23 14:31]:
>>>>> well, it still just _feels_ wrong
>>>>> to go and throw batteries around...
>>>> 
>>>> biodigradable batteries, anyone?
>>>> now *that* would cause a craze! :)
>>> 
>>> Stick some copper and zinc in a lemon. Copper is harmful to the
>>> environment, though. A graphite rod might do instead.
>> 
>> Do we have to use imported fruits? Just think of the carbon footprint!
> 
> Local vinegar probably works, too.
> 
> A Zamboni pile might work for centuries. Bit bulky for a throwie, though.


Uppsala University: "green algae -> green battery"
http://www.uu.se/en/node1038

Sony: "Bio Battery - sugar"
http://www.sony.net/SonyInfo/technology/technology/theme/bio_01.html

Fuji: "EnviroMAX™ ... if it is disposed of through normal waste systems"
http://www.greenfuji.com

MIT & Polytechnic Institute: "carbon nanotubes on a silicon substrate .. gaps between the tubes with cellulose"
http://arstechnica.com/old/content/2007/08/scientists-create-paper-thin-flexible-biodegradable-battery.ars
http://web.mit.edu/press/images/researchers/hammond.pdf