Super Chloride Ionic Conductivity in CsSnCl3‐Based Perovskite Compound and Its Application for Solid‐State Chloride Batteries

Autor: Liwei Zhao, Atsushi Inoishi, Hidenori Miki, Megumi Motoyama, Shigeto Okada, Takamasa Asano, Atsushi Sakuda, Akitoshi Hayashi, Hikari Sakaebe
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Advanced Energy & Sustainability Research, Vol 5, Iss 12, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2699-9412
81609450
DOI: 10.1002/aesr.202400198
Popis: A CsSnCl3‐based solid electrolyte in which 5% of Sn sites are occupied by Y ions, CsSn0.95Y0.05Cl3.05 (CSYC), is developed using a one‐step mechanical ball‐milling method. CSYC exhibits a stable cubic perovskite crystal structure and a high chloride ion conductivity of 4.9 mS cm−1. The relative density of a CSYC pellet following cold pressing without heat treatment is 97.5%. The high relative density and ionic conductivity are considered to originate from the high mechanical plasticity of the pellets, as evidenced by a low Young's modulus of 8.2 GPa. An all‐solid‐state chloride ion battery cell using CSYC as the electrolyte, BiCl3 as the active cathode material, and Sn as the anode is confirmed to operate at room temperature. The cell shows a large initial discharge capacity of 178 mAh g−1, ≈70% utilization, and good capacity retention with a reversible capacity of 100 mAh g−1 after 40 cycles. The mechanical plasticity of CSYC is considered to be a major contributor to its high ionic conductivity and good battery cycling performance.
Databáze: Directory of Open Access Journals
Externí odkaz: