Lithium-metal batteries get 42% higher capacity at with new separator

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Lithium-metal batteries have been regarded for years as a promising successor to today's lithium-ion cells because they could store significantly more energy per weight. However, metallic lithium in the anode reacts chemically very easily and often dissipates unevenly when charging. Needle-like dendrites that penetrate the separator can cause short circuits and shorten the cell life. Especially when fast charging, this problem is exacerbated bec…