Synthesis and Electrode Performance of Li4MoO5-LiFeO2 Binary System as Positive Electrode Materials for Rechargeable Lithium Batteries

被引：32

作者：

Matsuhara, Takashi ^{[1
]}

Tsuchiya, Yuka ^{[1
]}

Yamanaka, Keisuke ^{[2
]}

Mitsuhara, Kei ^{[2
]}

Ohta, Toshiaki ^{[2
]}

Yabuuchi, Naoaki ^{[1
]}

机构：

[1] Tokyo Denki Univ, Dept Green & Sustainable Chem, Adachi Ku, 5 Senju Asahi Cho, Tokyo 1208551, Japan

[2] Ritsumeikan Univ, SR Ctr, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan

来源：

ELECTROCHEMISTRY | 2016年 / 84卷 / 10期

基金：

日本科学技术振兴机构;

关键词：

Lithium Battery; Molybdenum; Iron; Positive Electrode; ELECTROCHEMICAL PROPERTIES; ION BATTERIES; ANIONIC REDOX; LI2MNO3; EDGES;

D O I：

10.5796/electrochemistry.84.797

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A binary system, x Li4MoO5-(1 - x) LiFeO2, is studied as electrode materials for rechargeable lithium batteries. A sample of single phase is obtained at x = 0.5, and it is found that Li1.42Mo0.29Fe0.29O2 (x = 0.5) crystalizes into Li5ReO6-type structure. Although an initial charge capacity of Li1.42Mo0.29Fe0.29O2 reaches 350 mAh g(-1), irreversible phase transition associated with oxygen loss and molybdenum migration on charge is evidenced by X-ray diffraction and X-ray absorption spectroscopy. The irreversible phase transition inevitably results in large polarization on discharge as electrode materials in Li cells. These findings provide the basis for the development of high-capacity electrode materials with solid-state redox reaction of oxide ions. (C) The Electrochemical Society of Japan, All rights reserved.

引用

页码：797 / 801

页数：5

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