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Sulfide Glass‐Ceramic Electrolytes for All‐Solid‐State Lithium and Sodium Batteries
Author(s) -
Tatsumisago Masahiro,
Hayashi Akitoshi
Publication year - 2014
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12084
Subject(s) - materials science , sulfide , fast ion conductor , electrolyte , ceramic , lithium (medication) , glass ceramic , solid solution , ionic conductivity , inorganic chemistry , chemical engineering , mineralogy , metallurgy , chemistry , electrode , medicine , engineering , endocrinology
Sulfide glass‐ceramic electrolytes with L i + or N a + ion conduction have been developed in last decade. High‐temperature phases of L i 7 P 3 S 11 and cubic N a 3 PS 4 are precipitated from mother glasses, and the obtained glass‐ceramics show higher conductivity than the mother glasses. It is difficult to synthesize those high‐temperature phases by conventional solid‐state reaction, and glass electrolytes are thus important as a precursor for forming high‐temperature phases. The highest conductivities at 25°C of 1.1 × 10 −2 S/cm for Li + ion conductor ( L i 7 P 3 S 11 ) and 7.4 × 10 −4 S/cm for Na + ion conductor ( N a 3.06 P 0.94 S i 0.06 S 4 ) are achieved in sulfide glass‐ceramic electrolytes. All‐solid‐state batteries with sulfide glass‐ceramic electrolytes were fabricated by cold press at room temperature. Sulfide electrolytes have favorable mechanical properties to form favorable solid–solid contacts in solid‐state batteries by pressing without heat treatment. All‐solid‐state L i‐ I n/ S and N a‐ S n/ T i S 2 cells using sulfide glass‐ceramic electrolytes operate as secondary batteries and exhibit good cycle performance at room temperature.