Boosted Charge Transfer in Twinborn α-(Mn2O3–MnO2) Heterostructures: Toward High-Rate and Ultralong-Life Zinc-Ion Batteries
| Autor: | Hao Jiang, Wenlong Song, Jing-Xing Wu, Jing Cuan, Jianfeng Mao, Zaiping Guo, Jun Long, Fuhua Yang, Zhanhong Yang, Rui Song |
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| Rok vydání: | 2020 |
| Předmět: |
Aqueous solution
Materials science chemistry.chemical_element Heterojunction 02 engineering and technology Zinc Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy Cathode 0104 chemical sciences law.invention chemistry Chemical engineering law Electric field Electrode General Materials Science Nanorod 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 12:32526-32535 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.0c05812 |
| Popis: | 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 α-(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 α-(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. |
| Databáze: | OpenAIRE |
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