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

  • Xuecen Zeng
  • Xuejing Zhang
  • Shuang Liu
  • Hao Yang
  • Zhanliang TaoEmail author
  • Jing LiangEmail author
Articles
  • 3 Downloads

Abstract

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.

Keywords

γ-MnO2 cathode catalyst solid phase synthesis sodium-air batteries 

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Notes

Acknowledgements

This work was supported by the National Key R&D Program (2016YFB0901502, 2016YFB0101201), the National Natural Science Foundation of China (NSFC) (51771094), Ministry of Education (B12015), and Tianjin High-Tech (18JCZDJC31500).

Supplementary material

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and Collaborative Innovation Center of Chemical Science and Engineering, College of ChemistryNankai UniversityTianjinChina

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