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Electrocatalytic performance of CuO/graphene nanocomposites for Li-O-2 batteries
- Authors
- Kim, Da-Sol; Lee, Gwang-Hee; Lee, Seun; Kim, Jae-Chan; Lee, Hack Jun; Kim, Byung-Kook; Kim, Dong-Wan
- Issue Date
- 15-6월-2017
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- CuO; Graphene; Electrocatalyst; Oxygen electrode; Li-O-2 batteries
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.707, pp.275 - 280
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 707
- Start Page
- 275
- End Page
- 280
- ISSN
- 0925-8388
- Abstract
- A hybrid catalyst system of a porous CuO nanowire/leaf mixture anchored onto graphene (p-CuO/G hybrid) was prepared as an oxygen-electrode electrocatalyst for lithiumeoxygen (LieO(2)) batteries. The p-CuO/G hybrid was prepared via the hybridization of a porous 1D/2D CuO mixture with 2D graphene. As an oxygen-electrode electrocatalyst for LieO(2) cells, the p-CuO/G hybrid exhibited high reversibility with a low voltage gap compared with a graphene electrode during 120 dischargeecharge cycles under a fixed capacity regime of 1000 mA h g(-1). We demonstrated the oxygen reduction and evolution kinetics of the p-CuO/G hybrid using electrochemical impedance spectroscopy. (C) 2016 Elsevier B.V. All rights reserved.
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