Optimum lithium-ion conductivity in cubic Li7-xLa3Hf2-xTaxO12

被引：68

作者：

Gupta, Asha ^{[1
,2
]}

Murugan, Ramaswamy ^{[3
]}

Paranthaman, M. Parans ^{[4
]}

Bi, Zhonghe ^{[4
]}

Bridges, Craig A. ^{[4
]}

Nakanishi, Masahiro ^{[4
,5
]}

Sokolov, Alexei P. ^{[4
]}

Han, Kee Sung ^{[4
]}

Hagaman, E. W. ^{[4
]}

Xie, Hui ^{[1
,2
]}

Mullins, C. Buddie ^{[1
,2
,6
,7
]}

Goodenough, John B. ^{[1
,2
]}

机构：

[1] Univ Texas Austin, Mat Res Program, Austin, TX 78712 USA

[2] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA

[3] Pondicherry Univ, Dept Phys, Pondicherry 605014, India

[4] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[5] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

[6] Univ Texas Austin, Dept Chem Engn, Austin, TX 78712 USA

[7] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA

来源：

JOURNAL OF POWER SOURCES | 2012年 / 209卷

关键词：

Li-ion battery; Solid electrolyte; Garnet; Li7-xLa3H f(2-x)Ta(x)O(12); Li NMR; Ionic conductivity; GARNETS;

D O I：

10.1016/j.jpowsour.2012.02.099

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：

The nominal Li concentration giving a maximum room temperature Li-ion conductivity sigma(1.i) similar or equal to 3.45 x 10(-4) Scm(-1) with an E-a similar or equal to 0.438 eV in the system Li7-xLa3Hf2-xTaxO12 fired in an alumina crucible at 1130 degrees C for 48h occurs in the narrow range of x = 0.45 +/- 0.05. The samples were prepared by solid-state reaction and characterized by XRD, SEM, electrochemical impedance spectroscopy and Li-7 MAS NMR measurements. Published by Elsevier B.V.

引用

页码：184 / 188

页数：5

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