In situ imaging of electrocatalysis in a K-O2 battery with a hollandite α-MnO2 nanowire air cathode

Yushu Tang; Liqiang Zhang; Yongfu Tang; Xin Wang; Teng Zhang; Rui Yang; Chi Ma; Na Li; Yuening Liu; Xinxin Zhao; Xionghu Zhang; Zaifa Wang; Baiyu Guo; Yongfeng Li; Jianyu Huang

doi:10.1039/c9cc05226g

In situ imaging of electrocatalysis in a K-O₂ battery with a hollandite α-MnO₂ nanowire air cathode

Chem Commun (Camb). 2019 Sep 10;55(73):10880-10883. doi: 10.1039/c9cc05226g.

Authors

Yushu Tang¹, Liqiang Zhang, Yongfu Tang, Xin Wang, Teng Zhang, Rui Yang, Chi Ma, Na Li, Yuening Liu, Xinxin Zhao, Xionghu Zhang, Zaifa Wang, Baiyu Guo, Yongfeng Li, Jianyu Huang

Affiliation

¹ State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Changping 102249, China. [email protected].

PMID: 31435634
DOI: 10.1039/c9cc05226g

Abstract

Using α-manganese dioxide (α-MnO2) nanowires as the air electrode, a K-O2 nanobattery is assembled in an aberration corrected environmental transmission electron microscope. It is found that the α-MnO2 nanowires are reduced into Mn3O4 and MnO during discharge; meanwhile, KO2 is formed on the surface of the α-MnO2 nanowires.