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Characterization of Li2S–P2S5–Cu composite electrode for all-solid-state lithium secondary batteries
- Hayashi, Akitoshi, Ohtsubo, Ryoji, Nagao, Motohiro, Tatsumisago, Masahiro
- Journal of materials science 2010 v.45 no.2 pp. 377-381
- batteries, composite materials, copper, electrochemistry, electrodes, electrolytes, lithium, reaction mechanisms
- Electrochemical performance of the Li₂S–P₂S₅–Cu composite materials was examined in all-solid-state lithium secondary batteries. The 80Li₂S·20P₂S₅ (mol.%) solid electrolyte with the addition of Cu was partially used as an active material with lithium source in all-solid-state cells. The initial discharge capacity of 110 mAh g⁻¹ (normalized by the weight of 80Li₂S·20P₂S₅–Cu), which corresponds to 400 mAh g⁻¹ (normalized by the weight of Li₂S), was obtained in the cell using the 80Li₂S·20P₂S₅–Cu composite electrode with the molar ratio of Li₂S/Cu = 48/52. Cycling performance and reaction mechanism of the electrode in the solid-state cell were investigated.