期刊
SMALL
卷 16, 期 22, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202001323
关键词
double electrolyte batteries; nanoporous alloy electrodes; zinc-ion batteries; Zn anodes
类别
资金
- National Natural Science Foundation of China [21805056, 51772135]
- Scientific Research Foundation of Guilin University of Technology [GUTQDJJ2018007]
- Technology Base and Special Talents Development Foundation of Guangxi Province [GUIKE-AD19110039]
- GDAS' Project of Science and Technology Development [2020GDASYL-202001030116]
- Postdoctoral Science Foundation of China [2019M662822]
- Ministry of Education of China [6141A02022516]
The recharge ability of zinc metal-based aqueous batteries is greatly limited by the zinc anode. The poor cycling durability of Zn anodes is attributed to the dendrite growth, shape change and passivation, but this issue has been ignored by using an excessive amount of Zn in the past. Herein, a 3D nanoporous (3D NP) Zn-Cu alloy is fabricated by a sample electrochemical-assisted annealing thermal method combined, which can be used directly as self-supported electrodes applied for renewable zinc-ion devices. The 3D NP architectures electrode offers high electron and ion transport paths and increased material loading per unit substrate area, which can uniformly deposit/strip Zn and improve charge storage ability. Benefiting from the intrinsic materials and architectures features, the 3D NP Zn-Cu alloy anode exhibits high areal capacity and excellent cycling stability. Further, the fabricated high-voltage double electrolyte aqueous Zn-Br-2 battery can deliver maximum areal specific capacity of approximate to 1.56 mAh cm(-2), which is close to the level of typical commercial Li-ion batteries. The excellent performance makes it an ideal candidate for next-generation aqueous zinc-ion batteries.
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