Synthesis and Electrochemical Properties of LATP-LLTO Lithium Ion Conductive Composites

被引：19

作者：

Onishi, Harunobu ^{[1
]}

Takai, Shigeomi ^{[1
]}

Yabutsuka, Takeshi ^{[1
]}

Yao, Takeshi ^{[2
,3
]}

机构：

[1] Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

[2] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan

[3] Kagawa Coll, Natl Inst Technol, Takamatsu, Kagawa 7618058, Japan

来源：

ELECTROCHEMISTRY | 2016年 / 84卷 / 12期

关键词：

Solid Electrolyte; Lithium Ion Conductor; LATP; Composite; ENHANCEMENT; MONOHYDRATE;

D O I：

10.5796/electrochemistry.84.967

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In order to improve the ionic conductivity of NASICON-type lithium ion conductor, Li(13)Al(0.)3Ti(1.7)(PO4)(3) (LATP), lithium ion conductive composites have been prepared to disperse the perovskite-type lithium ion conductor, Li0.348La0.55TiO3 (LLTO), in the LATP matrix. X-ray powder diffraction revealed that the added LLTO has reacted with LATP to form some LaPO4 derivatives after the sintering at 1000 degrees C. The measured conductivity of the composite increases with the amount of added LLTO up to 4 wt% showing the highest value of 7.6 x 10(-4) S cm(-1), which is approximately three times larger than that of pristine LATP. Further amount of LLTO addition gives gradual decrease in conductivity due to the deterioration of sintered density. It is also confirmed that the transport number of lithium ion is almost unity for the LATP-LLTO composite from the DC conduction experiments using blocking electrode. (C) The Electrochemical Society of Japan, All rights reserved.

引用

页码：967 / 970

页数：4

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