Comparative Study of the Cathode and Anode Performance of Li2MnSiO4 for Lithium-Ion Batteries

被引：19

作者：

Liu, Shuang-Shuang ^{[1
,3
]}

Song, Li-Jun ^{[1
,3
]}

Yu, Bao-Jun ^{[2
,3
]}

Wang, Cheng-Yang ^{[2
,3
]}

Li, Ming-Wei ^{[1
,3
]}

机构：

[1] Tianjin Univ, Dept Chem, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

[3] Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2016年 / 188卷

关键词：

Lithium manganese orthosilicate; Anode material; Cathode material; Lithium-ion battery; SOLID-STATE SYNTHESIS; HIGH-CAPACITY; ELECTROCHEMICAL PERFORMANCE; GEL METHOD; CARBON; NANOCOMPOSITE; NANOPARTICLES; ACID; FE; SUBSTITUTION;

D O I：

10.1016/j.electacta.2015.11.144

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon-coated Li2MnSiO4 nanocrystallites are synthesized via a solid state reaction, and their cathode and anode performance is comparatively studied. The Li2MnSiO4 cathode shows an initial charge/discharge capacity of 405/134 mAh g(-1) at a current density of 16.6 mA g(-1), and a low charge/discharge capacity of 93/66 mAh g(-1) during the 20th cycle. Partial Li2MnSiO4 cathode decomposes at 4.56 V (vs Lr+/Li) during the initial charge. Interestingly, the Li2MnSiO4 anode exhibits a high initial discharge/charge capacity of 658/388 mAh g(-1) at a current density of 20 mA g(-1), and a discharge/charge capacity of 459/456 mAh g(-1) during the 50th cycle. Li2MnSiO4 anodes also have stable and good rate capabilities. The Li2MnSiO4 crystallites as anode decompose during cycling, and their capacity increases simultaneously. It is proposed that Li2MnSiO4 anode converts energy via a reversible conversion reaction. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：145 / 152

页数：8

共 44 条

[1] A novel approach to employ Li2MnSiO4 as anode active material for lithium batteries [J].