Uniform SiOx/graphene composite materials for lithium ion battery anodes

被引：42

作者：

Zhang, Junying ^{[1
,2
]}

Zhang, Xiaoming ^{[1
]}

Hou, Zhiling ^{[2
]}

Zhang, Lichun ^{[3
]}

Li, Chuanbo ^{[1
,4
]}

机构：

[1] Minzu Univ China, Sch Sci, Beijing 100081, Peoples R China

[2] Beijing Univ Chem Technol, Coll Math & Phys, Beijing 100029, Peoples R China

[3] Ludong Univ, Sch Phys & Optoelect Engn, Yantai 264025, Peoples R China

[4] Minzu Univ China, Optoelect Res Ctr, Beijing 100081, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 809卷

基金：

中国国家自然科学基金;

关键词：

Silicon suboxide; Graphene; Conductivity; Anode; Lithium ion batteries; ELECTROCHEMICAL PROPERTIES; CARBON COMPOSITE; FACILE SYNTHESIS; SUPERIOR ANODE; PERFORMANCE; NANOCOMPOSITE; PRELITHIATION; FABRICATION; EFFICIENT;

D O I：

10.1016/j.jallcom.2019.151798

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multilayer graphene is prepared by micromechanical exfoliation method. Then, it is used as conductive component for lithium ion battery SiOx anodes. Uniform SiOx/graphene composite materials with different percentages of graphene are obtained by high-energy ball milling process. The multilayer graphene can connect the SiOx particles and enhance the electrical conductivity effectively. The optimized SiOx/graphene composite electrode exhibits excellent electrochemical performance with initial reversible specific capacity of 1325.7 mAhg(-1) and capacity retention as high as 95.8% (1269.7 mAhg(-1)) after 120 cycles. The mechanical exfoliation approach used for the production of multilayer graphene is low-cost, mass-productive and effective in SiOx conductivity enhancement. The excellent conductive agent of multilayer graphene could be employed for high-performance lithium ion battery SiOx anodes. (C) 2019 Elsevier B.V. All rights reserved.

引用

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