Reduced Graphene-Wrapped MnO2 Nanowires Self-Inserted with Co3 O4 Nanocages: Remarkable Enhanced Performances for Lithium-Ion Anode Applications

Qi Zhu; Yunhui Li; Ying Gao; Xiao Wang; Shuyan Song

doi:10.1002/chem.201600456

Reduced Graphene-Wrapped MnO2 Nanowires Self-Inserted with Co3 O4 Nanocages: Remarkable Enhanced Performances for Lithium-Ion Anode Applications

Chemistry. 2016 May 10;22(20):6876-80. doi: 10.1002/chem.201600456. Epub 2016 Apr 13.

Authors

Qi Zhu^{1

2}, Yunhui Li¹, Ying Gao³, Xiao Wang⁴, Shuyan Song⁵

Affiliations

¹ Department of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China.
² State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, P. R. China.
³ Department of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China. gaoying@cust.edu.cn.
⁴ State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, P. R. China. skybyyn@ciac.ac.cn.
⁵ State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, P. R. China. songsy@ciac.ac.cn.

PMID: 27071726
DOI: 10.1002/chem.201600456

Abstract

A simple synthetic approach for graphene-templated nanostructured MnO2 nanowires self-inserted with Co3 O4 nanocages is proposed in this work. The Co3 O4 nanocages were penetrated in situ by MnO2 nanowires. As an anode, the as-obtained MnO2 -Co3 O4 -RGO composite exhibits remarkable enhanced performance compared with the MnO2 -RGO and Co3 O4 -RGO samples. The MnO2 -Co3 O4 -RGO electrode delivers a reversible capacity of up to 577.4 mA h g(-1) after 400 cycles at 500 mA g(-1) and the Coulombic efficiency of MnO2 -Co3 O4 -RGO is about 96 %.

Keywords: Coulombic efficiency; electrochemistry; graphene; nanostructures; reversible capacity.

Publication types

Research Support, Non-U.S. Gov't