Mechanochemical Synthesis of High Lithium Ion Conducting Materials in the System Li3N-SiS2

详细信息    查看全文

• 作者：Keiichi Iio ; Akitoshi Hayashi ; Hideyuki Morimoto ; Masahiro Tatsumisago ; and Tsutomu Minami
• 刊名：Chemistry of Materials
• 出版年：2002
• 出版时间：June 2002
• 年：2002
• 卷：14
• 期：6
• 页码：2444 - 2449
• 全文大小：105K
• 年卷期：v.14,no.6(June 2002)
• ISSN：1520-5002

文摘

High lithium ion conducting materials were mechanochemically synthesized using Li₃Nand SiS₂ as starting materials. The obtained Li₃N-SiS₂ materials were almost amorphous;the amorphous phases consisted of SiS₄ tetrahedral units with no edge sharing and thelocal structure was very similar to that of mechanically milled Li₂S-SiS₂ amorphousmaterials. High lithium ion conducting Li₃N-SiS₂ materials could be synthesized in veryshort milling periods, around 20 min, since explosive reactions occurred in this system. Themechanically milled 40Li₃N·60SiS₂ (mol %) material exhibited excellent properties as solidelectrolytes such as high conductivity around 10^-4 S cm^-1 at room temperature, unity oflithium ion transport number, and a wide electrochemical window of about 10 V vs Li⁺/Li.