Lithium-rich sulfide Li2Ti1−xSixS3 cathode materials optimized through Si-doping for high-capacity all-solid-state lithium-ion batteries

The dual-function strategy of Si doping improved the anionic redox activity and Li + diffusion capability of Li 2 Ti 1− x Si x S 3 and enabled the rocksalt-type Li 2 Ti 1− x Si x S 3 to achieve a high areal capacity of 9.79 mA h cm −2 in all-solid-state lithium-ion batteries.