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Coffee-Powered Batteries

Posted by timothy on from the these-grounds-are-grounds dept.

michael.creasy writes: "Seems that Sony have come up with a way of using old coffee grounds to make batteries. They are using coffee grounds as the negative electrode material. So now there's yet another reason for having a few cups before going to work -- to power your multitude of electrical gizmos!"

2 of 22 comments (clear)

  1. Re:Fair-trade coffee in CA by jnana · · Score: 2, Informative

    Look here for *tons* of places in California.

  2. You can buy one of these at the toy store! by rufusdufus · · Score: 2, Informative

    I was at a Toy store [Imaginarium] last night and they were selling a clock that runs on Potatoes..or a whole list of things, one of them being coffee grounds.