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Electrolyte properties directly affect the electrode potential of Li metal, which impacts Coulombic Efficiency. High ELi suppresses electrolyte decomposition and yields high plating/stripping efficiency for Li-metal batteries.
Research: Anode Source: Ko, Obukata, Shimada, Takenaka, Nakayama, Yamada, and Yamada
The coulombic efficiency of Li plating and stripping is largely influenced by the thermodynamic electrode potential of Li metal (ELi). Increasing the ELi reflects a decrease in Li metal's propensity towards reduction, which can minimize the reductive decomposition of the electrolyte and thus enhance coulombic efficiency. The trends identified in this work are consistent with coulombic efficiencies reported for other state-of-the-art electrolytes for Li-metal batteries (weakly solvating electrolytes, concentrated electrolytes, and locally concentrated electrolytes).
Volta Foundation
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