期刊
ACS APPLIED ENERGY MATERIALS
卷 2, 期 9, 页码 6490-6496出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.9b01063
关键词
Au nanoparticle; heterogeneous seed; Zn anode; CNT/MnO2 cycling stability; zinc-ion battery
资金
- National Natural Science Foundation of China (NSFC) [5150219, 51772257]
- Major Basic Research Projects of Shandong Natural Science Foundation [ZR2018ZC1459]
- Early Career Scheme of the Research Grants Council of Hong Kong SAR [CityU 9041997]
- Doctor Foundation of Shandong Province [ZR2017BB081]
- Yantai Science and Technology Plan Projects [2019XDHZ87]
- State Outstanding Young Scholars [51325203]
- Outstanding Academic Leaders program of Shanghai Municipal Science and Technology Commission [15XD1501700]
- Changjiang Scholars Programmes [T2015136]
As a promising anode for aqueous batteries, Zn metal shows a number of attractive advantages such as low cost, low redox potential, high capacity, and environmental benignity. Nevertheless, the quick growth of dendrites/protrusions on the hostless Zn anodes not only enlarges batteries' internal resistance but also causes sudden shorting failure by piercing separators. Herein, we report a novel heterogeneous seed method to guide the morphology evolution of plated Zn. The heterogeneous seeds are sputtering-deposited quasi-isolated nano-Au particles (Au-NPs) that enable a uniform and stable Zn-plating/stripping process on the anodes. Tested on ZnIZn symmetric cells, the Au-nanoparticle (NP) decorated Zn anodes (NA-Zn) demonstrate much better cycling stability than the bare ones (92 vs 2000 h). In NA-ZnICNT/MnO2 batteries, this heterogeneous seed prolongs the lifetime of the device from similar to 480 cycles up to 2000 cycles. This work offers a facile and promising Zn dendrite/protrusion suppressing route for the achievement of long-life Zn-ion batteries.
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