High dimensional stability of LiCoMnO4 as positive electrodes operating at high voltage for lithium-ion batteries with a long cycle life

被引：34

作者：

Ariyoshi, Kingo ^{[1
]}

Yamamoto, Hiroya ^{[1
]}

Yamada, Yusuke ^{[1
]}

机构：

[1] Osaka City Univ, Dept Appl Chem & Bioengn, Grad Sch Engn, Sumiyoshi Ku, 3-3-138 Sugimoto, Osaka 5588585, Japan

来源：

ELECTROCHIMICA ACTA | 2018年 / 260卷

基金：

日本科学技术振兴机构;

关键词：

Lithium-ion battery; Lithium cobalt manganese oxide; Dimensional stability; RECHARGEABLE CAPACITY; X-RAY; CATHODE; STRESS; LICO1/3NI1/3MN1/3O2; ELECTROCHEMISTRY; DEFORMATION; MECHANISMS; CRACKING;

D O I：

10.1016/j.electacta.2017.12.064

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Dimensionally stable LiCoMnO4 having a spinel-framework structure was developed as a positive electrode of lithium-ion batteries with a long cycle life. Well-crystallized LiCoMnO4 prepared by a two-step solid-state reaction shows large rechargeable capacity of 120 mAh g(-1) at high operating voltage of 5 V. Ex-situ XRD measurements of the LiCoMnO4 revealed small change in the cubic lattice parameter (ca. 0.7%) during charge and discharge. Change in electrode thickness of LiCoMnO4 measured by using a precision dilatometer is accordance with the change in the cubic lattice parameter. The LiCoMnO4 electrode showed high dimensional stability compared with other LiMn2O4-based materials having a spinel-framework structure. (c) 2017 Elsevier Ltd. All rights reserved.

引用

页码：498 / 503

页数：6

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