Journal
SCIENCE CHINA-CHEMISTRY
Volume 62, Issue 6, Pages 727-731Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-018-9442-1
Keywords
gamma-MnO2; cathode catalyst; solid phase synthesis; sodium-air batteries
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Funding
- National Key RD Program [2016YFB0901502, 2016YFB0101201]
- National Natural Science Foundation of China (NSFC) [51771094]
- Ministry of Education [B12015]
- Tianjin High-Tech [18JCZDJC31500]
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The -MnO2@CNT catalyst was prepared by in situ solid phase synthesis and first applied into sodium-air batteries (SABs). The initial discharge specific capacity of SABs with -MnO2@CNT catalyst can reach 8804 mA h g(-1) and the overpotential gap is only 140 mV, which is better than the batteries that is catalyzed by -MnO2@CNT and pure CNT. Besides, the batteries also exhibit excellent cycle performance, which can keep relatively stable for 246 cycles at 500 mA g(-1) and 140 cycles at 1000 mA g(-1).
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