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Title: Microwave-assisted synthesis of Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposites and electrochemical performances for lithium ion batteries

Abstract

Highlights: • Co{sub 3}O{sub 4}–graphene nanocomposites are prepared by microwave irradiation method. • Co{sub 3}O{sub 4} nanosheets exhibit porous structure with the pore sizes of 3–6 nm. • The porous Co{sub 3}O{sub 4}–graphene nanocomposites show excellent electrochemical performance. • Synergistic effects of Co{sub 3}O{sub 4} and graphene improve the electrochemical performance. - Abstract: Porous Co{sub 3}O{sub 4} nanosheets anchored on graphene nanosheets were synthesized by microwave irradiation method. The obtained Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposite as an anode material for LIBs demonstrates a high initial discharge capacity of 1359.6 mAh g{sup −1} with a Columbic efficiency of 72.7% at a rate of 100 mA g{sup −1}. Moreover, a significantly enhanced reversible capacity of ∼1036.9 mAh g{sup −1} is retained after 50 cycles, and the capacity can reincrease to 1068 mAh g{sup −1} when the current density returns back to 100 mA g{sup −1} after cycled at various rates for 50 cycles. The improved electrochemical performance is attributed to the unique architectures of the porous Co{sub 3}O{sub 4} nanosheets and the incorporation of graphene nanosheets. Therefore, this nanocomposite is widely considered to be an attractive candidate as an anode material for next-generation LIBs.

Authors:
 [1]; ; ; ;  [2];  [2]
  1. Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004 (China)
  2. Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004 (China)
Publication Date:
OSTI Identifier:
22584216
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 72; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; COBALT OXIDES; CURRENT DENSITY; ELECTROCHEMISTRY; ELECTRON MICROSCOPY; GRAPHENE; IRRADIATION; LITHIUM; LITHIUM ION BATTERIES; LITHIUM IONS; MICROWAVE RADIATION; NANOCOMPOSITES; NANOSTRUCTURES; PERFORMANCE; POROUS MATERIALS; SHEETS; SYNTHESIS

Citation Formats

Su, Qingmei, Yuan, Weiwei, Yao, Libing, Wu, Yishan, Zhang, Jun, and Du, Gaohui. Microwave-assisted synthesis of Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposites and electrochemical performances for lithium ion batteries. United States: N. p., 2015. Web. doi:10.1016/J.MATERRESBULL.2015.07.035.
Su, Qingmei, Yuan, Weiwei, Yao, Libing, Wu, Yishan, Zhang, Jun, & Du, Gaohui. Microwave-assisted synthesis of Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposites and electrochemical performances for lithium ion batteries. United States. https://doi.org/10.1016/J.MATERRESBULL.2015.07.035
Su, Qingmei, Yuan, Weiwei, Yao, Libing, Wu, Yishan, Zhang, Jun, and Du, Gaohui. Tue . "Microwave-assisted synthesis of Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposites and electrochemical performances for lithium ion batteries". United States. https://doi.org/10.1016/J.MATERRESBULL.2015.07.035.
@article{osti_22584216,
title = {Microwave-assisted synthesis of Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposites and electrochemical performances for lithium ion batteries},
author = {Su, Qingmei and Yuan, Weiwei and Yao, Libing and Wu, Yishan and Zhang, Jun and Du, Gaohui},
abstractNote = {Highlights: • Co{sub 3}O{sub 4}–graphene nanocomposites are prepared by microwave irradiation method. • Co{sub 3}O{sub 4} nanosheets exhibit porous structure with the pore sizes of 3–6 nm. • The porous Co{sub 3}O{sub 4}–graphene nanocomposites show excellent electrochemical performance. • Synergistic effects of Co{sub 3}O{sub 4} and graphene improve the electrochemical performance. - Abstract: Porous Co{sub 3}O{sub 4} nanosheets anchored on graphene nanosheets were synthesized by microwave irradiation method. The obtained Co{sub 3}O{sub 4}–graphene sheet-on-sheet nanocomposite as an anode material for LIBs demonstrates a high initial discharge capacity of 1359.6 mAh g{sup −1} with a Columbic efficiency of 72.7% at a rate of 100 mA g{sup −1}. Moreover, a significantly enhanced reversible capacity of ∼1036.9 mAh g{sup −1} is retained after 50 cycles, and the capacity can reincrease to 1068 mAh g{sup −1} when the current density returns back to 100 mA g{sup −1} after cycled at various rates for 50 cycles. The improved electrochemical performance is attributed to the unique architectures of the porous Co{sub 3}O{sub 4} nanosheets and the incorporation of graphene nanosheets. Therefore, this nanocomposite is widely considered to be an attractive candidate as an anode material for next-generation LIBs.},
doi = {10.1016/J.MATERRESBULL.2015.07.035},
url = {https://www.osti.gov/biblio/22584216}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 72,
place = {United States},
year = {2015},
month = {12}
}