Chemical Battery Can Recharge Itself With Light

Interesting research taking place at the Indian Institute of Science Education and Research (IISER) in Pune, India, shared by the IEEE Spectrum blog. The creation of a photo battery "where the anode itself is made of titanium nitride and ambient light":

...Under artificial light, this prototype battery has a capacity of 77.8 mAh/g. It’ll quite happily power a small fan or LED light for about 30 seconds, and then if you give it a break for 30 seconds while shining a light on it, it’ll be all charged up and good to go again. Over 100 cycles, the battery retained a bit over 70 percent of its discharge capacity, which at least suggests some potential for longevity and usefulness.

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