Abstract
The problem of the interface optimization between solid electrolyte and anode must be resolved for all-solid-state power sources creation. In the presented work, it is proposed to use Li-In alloy as anode material instead of metallic lithium. The wettability of the composite solid electrolyte based on Li7La3Zr2O12 by In and Li-In alloy was investigated by high-temperature optical dilatometry. The symmetric cells with metallic lithium and Li-In alloy were assembled and their resistance was measured at room temperature. It was established that Li-In alloy application leads to a significant decrease in the resistance at the interface between anode and solid electrolyte (from 37.2 to 0.5 kΩ cm2). So, it can be concluded that using of Li-In alloy leads to the interface optimization between anode and composite electrolyte based on cubic Li7La3Zr2O12 and can be applied for all-solid-state power sources creation.
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