期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 749, 期 -, 页码 433-440出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.03.295
关键词
Li-O-2 batteries; Peanut shaped MnCo2O4; Hierarchical mesoporous; Electrocatalyst
资金
- National Natural Science Foundation of China [51772148, 51372113]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP) [PPZY2015B128]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Rechargeable Li-O-2 batteries have great potential on achieving large-capacity electrochemical energy storage. However, the poor cyclic stability seriously limits its commercial application. In this paper, peanut shaped MnCo2O4 which winding by multi- walled carbon nanotubes (MCO/MWCNTs) were synthesized through a facile solvothermal method. As-prepared MCO/MWCNTs have a unique hierarchical mesoporous of three-level pore sizes and show good ORR and OER electrocatalytic activity. When MCO/MWCNTs served as cathode catalysts in Li-O-2 batteries, the batteries exhibited long cycle life of 120 times at 100mA g(-1) with a limited capacity of 500mAh g(-1) and high discharge capacity up to 8849 mAh g(-1) with a restrict voltage of 2 V at 100mA g(-1). (C) 2018 Elsevier B.V. All rights reserved.
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