Scientists eport breakthrough with very low cost calcium metal battery

https://oilprice.com/Alternative-Energy/Renewable-Energy/Scientists-Report-Breakthrough-With-Very-Low-Cost-Calcium-Battery.html

"500 cycles repeated charge-discharge... copper sulfide (CuS) nanoparticle/carbon composite cathode and a hydride-based electrolyte... capacity  560 mAh g-1 – 2 to 3X higher than cathode materials for lithium-ion... 92% capacity"

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