Abstract
Electrochemical reactions of LiVS 2, Li 2FeS 4, and Li 4FeS 2 were investigated by using a Li + ion conductive glass, 0.01Li 3PO 4–0.63Li 2S–0.36SiS 2, as an electrolyte. The results showed remarkable differences from that in liquid electrolyte; the redox couples of both Li 2VS 2/LiVS 2 and LiVS 2/VS 2 were highly reversible, the reduction of Li 2FeS 2 led to the metastable phase Li 4FeS 2 that was completely reoxidized to the initial phase, and Li + ions were extracted from Li 2FeCl 4 without dissolution of the chloride itself. These improvements by using the solid electrolyte make a large choice of electrode materials.
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