CoO/Co3O4/graphene nanocomposites as anode materials for lithium-ion batteries

被引:49
|
作者
Zhang, Yanling [1 ]
Li, Yong [1 ]
Chen, Jin [1 ]
Zhao, Pingping [1 ]
Li, Degang [1 ]
Mu, Jiechen [2 ]
Zhang, Lipeng [1 ]
机构
[1] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China
[2] Shandong Univ Technol, Sch Mech Engn, Zibo 255049, Peoples R China
基金
中国国家自然科学基金;
关键词
CoO/Co3O4/graphene; Anode materials; Lithium-ion batteries; Nanocomposite; HIGH-PERFORMANCE ANODE; ENHANCED ELECTROCHEMICAL PERFORMANCE; MESOPOROUS CO3O4 NANOPARTICLES; FACILE SYNTHESIS; STORAGE PERFORMANCE; CARBON NANOTUBES; RATE CAPABILITY; GRAPHENE; NANOHYBRIDS; COMPOSITE;
D O I
10.1016/j.jallcom.2016.12.421
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
CoO/Co3O4/graphene nanocomposites were successfully synthesized through an easy, accessible method followed by annealing treatment. Graphene was used as the appropriate carrier to load CoO/Co3O4 nanoparticles because of its high surface area. The CoO/Co304/graphene nanocomposites were then tested as anode material for lithium-ion batteries (LIBs). Results showed that the nanocomposites led to high capacity, delivering initial discharge charge capacities of 1093.4 and 825.3 mAh.g(-1), with an initial coulombic efficiency of 75.5%. The nanocomposite electrode showed excellent rate capability and impressive cyclability, as well as a high reversible capacity of 695.4 mAh.g(-1) after 70 cycles at a discharge charge current density of 0.5 degrees C (1 degrees C = 890 rnA g-1). The excellent electrochemical performance was ascribed to the CoO nanoparticles and graphene. By contrast, pristine Co304 can maintain only 339.7 mAh.g(-1) after 70 cycles, indicating very poor cycling performance because of the huge volume change during cycling. These results revealed that the nanocomposites were excellent anode material for LIBs. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:672 / 678
页数:7
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