Intercalation-Type Halide Cathode Material for All-Solid-State Lithium Batteries.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41187255.
- Also identified by DOI 10.1021/acs.nanolett.5c04257.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
All-solid-state lithium batteries (ASSLBs) have garnered widespread attention due to their safety and high energy density. However, their electrochemical performances are significantly limited by the cathode materials. Herein, we present a layered halide cathode material, TiCl<sub>3</sub>, suitable for halide-based ASSLBs. TiCl<sub>3</sub> undergoes reversible redox reactions, facilitating the insertion and extraction of Li<sup>+</sup> at the Li1 and Li2 sites situated between the TiCl<sub>6</sub> octahedral interlayers without any phase transformation. The ASSLBs utilizing TiCl<sub>3</sub> as the cathode demonstrate a capacity of up to 170.6 mAh g<sup>-1</sup>, satisfactory rate performance, and excellent cycling stability, with a capacity retention of 81.4% after 200 cycles at 0.2 C. Long-term cycling neither causes a significant increase in impedance nor produces obvious element diffusion at the cathode/solid-state electrolyte interface, demonstrating the compatibility between them. This study will greatly promote the development of new cost-effective halide cathode materials and contribute to the industrialization of ASSLBs.