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Scientists discover lithium replacement that may revolutionize EV batteries: ‘99.7% efficient after over 400 hours of use’
https://www.yahoo.com/news/scientists-discover-lithium-replacement-may-111500394.html

Lithium-ion batteries, the common kind found in most of our cellphones and laptops, can take hundreds of thousands of years to break down after they’re used up — not to mention the devastating environmental impact lithium extraction has on our planet.
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But these shellfish batteries are biodegradable and can decompose in soil after just five months, leaving behind zinc, which can be recycled.

The University of Maryland’s study also found that chitin-zinc batteries were 99.7% efficient after over 400 hours of use, as reported by The Guardian, and that these batteries could likely be produced cheaply at scale.