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Small, Printable, Cheap Battery Tech Developed

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For the most part, batteries are pretty boring. Occasionally, however, something interesting comes along, like the Fraunhofer Research Institution for Electronic Nano Systems ENAS' printable battery tech.
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The cells developed aren't going to be of much use in a laptop, offering 1.5V a piece. Multiple batteries can be linked in series, though, providing 3V, 4.5V and 6V (as if you couldn't work out those steps yourself).

The cells are made using a silk-screen printing process similar to that used of printing t-shirts. The result is a battery weighing less than a gram and of negligible thickness.

The materials used in the teeny cells - a zinc anode and manganese cathode, to be specific - degrade over time. The batteries are therefore, for now, limited in use to applications where the relatively low power and short lifespan aren't a problem; such as greetings cards.

Of wide application? Probably not. Funky in a geeky way? Definitely.

Link:
Fraunhofer.

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