High lithium ion conductive Li7La3Zr2O12 by inclusion of both Al and Si

被引：241

作者：

Kumazaki, Shota ^{[1
]}

Iriyama, Yasutoshi ^{[1
]}

Kim, Ki-Hyun ^{[2
]}

Murugan, Ramaswamy ^{[3
]}

Tanabe, Kinuka ^{[2
]}

Yamamoto, Kazuo ^{[2
]}

Hirayama, Tsukasa ^{[2
]}

Ogumi, Zempachi ^{[4
]}

机构：

[1] Shizuoka Univ, Fac Engn, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan

[2] Japan Fine Ceram Ctr, Atsuta Ku, Nagoya, Aichi 4568587, Japan

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

[4] Kyoto Univ, Off Soc Acad Collaborat Innovat, Nishikyo Ku, Kyoto 6158520, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 05期

关键词：

Solid electrolyte; All-solid-state rechargeable lithium batteries; Interface; GLASS;

D O I：

10.1016/j.elecom.2011.02.035

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

High lithium-ion (Li+) conductive garnet-structured lanthanum lithium zirconate (LLZ) solid electrolyte is prepared by incorporation of appropriate amounts of silicon (Si) and aluminum (Al). The resultant pelletized LLZ obtains total Li+ conductivity of 6.8 x 10(-4) S cm(-1) at 298 K. This improved conductivity is nearly identical with the bulk Li+ conductivity of the LLZ reported earlier, suggesting that the grain boundary resistance is effectively reduced by the incorporation of Si and Al. Microanalyses by transmission electron microscopy coupled with energy-dispersive X-ray microanalysis and electron energy-loss spectroscopy revealed the presence of amorphous Li-Al-Si-O with nano crystalline LiAlSiO4 at grain boundaries. Fast lithium-ion transport around the amorphous Li-Al-Si-O/LiAlSiO4 interface will facilitate Li+ transport between the LLZ particles, resulting in the improvement of the total Li+ conductivity of LLZ. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：509 / 512

页数：4

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