期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 29, 页码 32526-32535出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c05812
关键词
zinc-ion batteries; heterostructures; cyclic performance; charge transfer; Zn2+ intercalation; stationary energy storage
资金
- Natural Science Foundation of Hunan Province, China [020JJ4734]
- Science and Technology Project of Changsha City [K1303015-11]
- Australian Research Council (ARC) [FT150100109, LP160101629, DP200101862]
Aqueous ZIBs are one of the most promising next-generation rechargeable batteries because of the high capacity, high hydrogen evolution overpotential, and chemically stable reversible plating/stripping of the zinc electrode in the mild aqueous electrolyte. However, there are limited cathode materials that can store Zn2+ reversibly with superior cycling and rate capability. Herein, hierarchically porous nanorods composed of twinborn alpha-(Mn2O3-MnO2) heterostructures are proposed as a robust cathode for Zn storage. Thanks to the hierarchically porous nanorod morphology and the abundant interface of the heterostructures involving a built-in electric field, the as-obtained twinborn alpha-(Mn2O3-MnO2) electrode delivers a high capacity of 170 mA h g(-1) for 2000 cycles at 500 mA g(-1) and shows an excellent rate capability of up to 1.5 A g(-1) with a capacity of 124 mA h g(-1). The inspiring results achieved exhibit the enormous potential of the high-performance heterostructure cathode for fast and stable ZIBs.
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