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- Title
Engineering Amorphous/Crystalline Structure of Manganese Oxide for Superior Oxygen Catalytic Performance in Rechargeable Zinc–Air Batteries.
- Authors
Zhou, Zihao; Zheng, Xiaoying; Liu, Manna; Liu, Peng; Han, Shengbo; Chen, Yingru; Lan, Bang; Sun, Ming; Yu, Lin
- Abstract
Although amorphous materials are popular in oxygen electrocatalysis, their performance requires further improvement to meet the need for rechargeable zinc–air batteries. In this work, an amorphous/crystalline layered manganese oxide (ACMO) was designed, and its unique amorphous/crystalline homogeneous structure activated its oxygen reduction activity with a positive half‐wave potential of 0.81 V and oxygen evolution activity with a moderate overpotential of 407 mV at 10 mA cm−2. Moreover, the amorphous/crystalline structure endowed ACMO with excellent stability. While employed as the air‐electrode material for rechargeable zinc–air batteries, ACMO overcame the poor cycling stability of manganese oxide and cycled stably for 1000 cycles (≈17 days) at 10 mA cm−2. Besides, it delivered a high power density of 159.7 mW cm−2 and a narrow voltage gap of 0.66 V. This work gives an insight into designing oxide materials with amorphous/crystalline structure and feasible guidance for harmonizing electrochemical activity and stability.
- Subjects
CRYSTAL structure; MANGANESE oxides; LITHIUM-air batteries; STORAGE batteries; AMORPHOUS substances; OXYGEN; ZINC electrodes
- Publication
ChemSusChem, 2022, Vol 15, Issue 15, p1
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.202200612