TY - JOUR
T1 - Room-temperature synthesis of CuO/graphene nanocomposite electrodes for high lithium storage capacity
AU - Seo, Seung Deok
AU - Lee, Duk Hee
AU - Kim, Jae Chan
AU - Lee, Gwang Hee
AU - Kim, Dong Wan
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) (No. 2011-0030745) and Ajou University research fellowship of 2011 (S-2011-G0001-00070) .
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2013/3
Y1 - 2013/3
N2 - A facile approach for the synthesis of hybrid nanocomposite electrodes comprising pine-nut-shaped cupric oxide (CuO) particles and electrolytically exfoliated conducting graphene nanosheets (GNSs) for lithium ion battery applications is demonstrated. The GNSs were initially dispersed in aqueous solution, and then, Cu(OH)2 was synthesized by the reaction of CuSO4·5H2O, NH4OH, and NaOH. In the subsequent chemical reduction process, a controlled amount of hydrazine hydrate (N2H4·H2O) was added to the reaction mixture to obtain the CuO/GNS nanocomposite. Information about the phase, surface properties, and morphology of the CuO and CuO/GNS composite was obtained by X-ray diffraction, Brunauer-Emmett-Teller surface analysis, field-emission scanning electron microscopy, and high-resolution transmission electron microcopy. The electrochemical performance of the nanocomposite was evaluated by cyclic voltammetry and galvanostatic cycling. The nanocomposite synthesized by this method had a uniform morphology without aggregation and showed enhanced electrochemical performances.
AB - A facile approach for the synthesis of hybrid nanocomposite electrodes comprising pine-nut-shaped cupric oxide (CuO) particles and electrolytically exfoliated conducting graphene nanosheets (GNSs) for lithium ion battery applications is demonstrated. The GNSs were initially dispersed in aqueous solution, and then, Cu(OH)2 was synthesized by the reaction of CuSO4·5H2O, NH4OH, and NaOH. In the subsequent chemical reduction process, a controlled amount of hydrazine hydrate (N2H4·H2O) was added to the reaction mixture to obtain the CuO/GNS nanocomposite. Information about the phase, surface properties, and morphology of the CuO and CuO/GNS composite was obtained by X-ray diffraction, Brunauer-Emmett-Teller surface analysis, field-emission scanning electron microscopy, and high-resolution transmission electron microcopy. The electrochemical performance of the nanocomposite was evaluated by cyclic voltammetry and galvanostatic cycling. The nanocomposite synthesized by this method had a uniform morphology without aggregation and showed enhanced electrochemical performances.
KW - Chemical reduction
KW - Copper oxide
KW - Graphene nanocomposites
KW - Lithium ion batteries
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U2 - 10.1016/j.ceramint.2012.08.021
DO - 10.1016/j.ceramint.2012.08.021
M3 - Article
AN - SCOPUS:84870300872
SN - 0272-8842
VL - 39
SP - 1749
EP - 1755
JO - Ceramics International
JF - Ceramics International
IS - 2
ER -
