The City College of New York is claiming 900 cycles from a zinc-manganese dioxide battery – a chemistry better know for non-rechargeable cells. It takes advantage of intercalation and complexation chemistry to make the cathodes rechargeable to a larger extent, greatly extending cycle life. “A new layered crystal structure of manganese dioxide is used in ...
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from Electronics Weekly https://www.electronicsweekly.com/news/research-news/zinc-battery-lasts-900-cycles-2017-08/
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