and we need Lis bar chart on this preso from quantum scape as we are off the page.
as in last info on mAh/g we started at 700 and tapered to 580 over 450 cycles
Lithium metal batteries are what QuantumScape chose to make its solid-state cell due to their high energy density potential. Liquid electrolytes were not considered very promising: no lithium metal cell with them had high Coulombic efficiency – which means they had low cycling lives. MIT researchers used an innovative electrolyte and discovered it could help to create stable lithium metal batteries with high-nickel cathodes.
Theoretically, such a battery could deliver more than 400 Wh/kg. The MIT researchers tested a lithium metal battery that achieved more than 230 mAh/g with 4.7V. The high voltage – considering the size of the cell – was another component that made it difficult for them to live longer.
Despite that, the cell coped with more than 100 cycles with a Coulombic efficiency above 99.65 percent. Under more demanding tests, it kept an efficiency of more than 88 percent for 90 cycles.
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