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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!"

7 of 22 comments (clear)

  1. So now... by darkov · · Score: 3, Funny

    ...when I pour my coffee into my laptop keyboard, thats good?

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

    Look here for *tons* of places in California.

  3. This could be a big payoff... by tunah · · Score: 3, Funny
    At first, bacteria are mixed with the coffee grounds and dehydrate the moisture

    Good idea! Dehydrated moisture can fetch up to $5000/kg on the black market!

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  4. Magic... by gnovos · · Score: 2

    From Man to Machine to Code, it's your one stop shop!

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  5. Betcha by Anonymous Coward · · Score: 3, Funny

    If you use some of Pitr's experimental Super Triple Espresso, you oughta be able to light up Chicago.

  6. I'd love to be a bored scientist by eaddict · · Score: 2, Interesting

    I often think of how things are found out/invented. I think boredom has allowed creation of many more things than we realize. Why coffe grounds now? Well, someone was doing some experiments and someone else had to make a new pot of coffee and.... Wonder what might be next. Any ideas?

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  7. 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.