A new ultrafast superionic Li-conductor: ion dynamics in Li11Si2PS12 and comparison with other tetragonal LGPS-type electrolytes

被引：262

作者：

Kuhn, Alexander ^{[1
]}

Gerbig, Oliver ^{[1
]}

Zhu, Changbao ^{[1
]}

Falkenberg, Frank ^{[1
]}

Maier, Joachim ^{[1
]}

Lotsch, Bettina V. ^{[1
,2
,3
,4
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Univ Munich, Dept Chem, D-81377 Munich, Germany

[3] NIM, D-80799 Munich, Germany

[4] Ctr Nanosci CeNS, D-80799 Munich, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2014年 / 16卷 / 28期

关键词：

THIO-LISICON; LITHIUM;

D O I：

10.1039/c4cp02046d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on a new ultrafast solid electrolyte of the composition Li11Si2PS12, which exhibits a higher room-temperature Li ion diffusivity than the present record holder Li10GeP2S12. We discuss the high-pressure synthesis and ion dynamics of tetragonal Li11Si2PS12, and comparison is made with our investigations of related members of the LMePS family, i.e. electrolytes of the general formula Li11-xMe2-xP1+xS12 with Me = Ge, Sn : Li10GeP2S12, Li7GePS8, Li10SnP2S12. The structure and dynamics were studied with multiple complementary techniques and the macroscopic diffusion could be traced back to fast Li ion hopping in the crystalline lattice. A clear correlation between the diffusivity and the unit cell volume of the LGPS-type electrolytes was observed.

引用

页码：14669 / 14674

页数：6

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