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

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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 Li-ion battery is so important to modern life that it earned the trio of chemists who invented it a Nobel Prize last year. But somewhere along the way, the battery industry developed a cobalt dependency.