A highly efficient cathode catalyst γ-MnO2@CNT composite for sodium-air batteries

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（6）
• 页码范围: 727-731
• 页数: 5页
• 语种: 英文

摘要

The γ-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 γ-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 α-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.