Journal
SCRIPTA MATERIALIA
Volume 68, Issue 8, Pages 619-622Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.12.020
Keywords
Li-O-2 battery; Graphene; Manganese oxide; Surface area
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Funding
- Energy Efficiency & Resources Program of the Korea Institute of Energy Technology Evaluation and Planning [20112010100110]
- Korea government Ministry of Knowledge Economy
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2012R1A1A2005977]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20112010100110] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2012R1A1A2005977] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Graphene/MnO2 composite was obtained by hydrothermal oxidation of the Mn-precursor on a graphene surface. The composite showed a fine dispersion of MnO2 nanorods over graphene nanosheets (GNs). The addition of MnO2 to GNs accelerated the oxygen reduction in the cathodes of Li-O-2 cells and promoted Li2O2 catalysis efficiently, compared with the pristine GNs. The power densities of the composite and the pristine GNs were 13.27 and 9.72 mW cm(-2), respectively. In addition, the cell containing GNs/MnO2 electrode exhibited stable cyclic performance. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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