This Cobalt-Free Battery Is Good for the Planet—and It Really Works

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Reducing the cobalt content in lithium-ion batteries is good for the environment, human rights, and maybe even the performance of the battery itself. The lithium-ion battery is an electrochemical wunderkind. We use it for everything, whether it’s mundane gadgetry like phones and laptops or more extreme applications like electric ships and helicopters on Mars. The …

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