期刊
ADVANCED MATERIALS
卷 34, 期 19, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202200860
关键词
dendrite-free Zn anodes; flexible Zn anode; mixed ionic-electronic conductor; Zn powder
类别
资金
- National Natural Science Foundation of China [51972121]
- Guangdong Key Laboratory of Battery Safety [2019B121203008]
- National Social Science Foundation of China [17BXW104]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515011502]
- Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation [pdjh2021a0072]
In this study, a mixed ionic-electronic conducting scaffold is introduced into Zn-P to fabricate anti-corrosive, flexible, and dendrite-free Zn anodes. The as-prepared Zn-P-based anode exhibits superior electrochemical performance, including long-life cycling stability and high rate capability in practical coin and flexible pouch cells.
Zn powder (Zn-P)-based anodes are considered ideal candidates for Zn-based batteries because they enable a positive synergistic integration of safety and energy density. However, Zn-P-based anodes still experience easy corrosion, uncontrolled dendrite growth, and poor mechanical strength, which restrict their further application. Herein, a mixed ionic-electronic conducting scaffold is introduced into Zn-P to successfully fabricate anti-corrosive, flexible, and dendrite-free Zn anodes using a scalable tape-casting strategy. The as-established scaffold is characterized by robust flexibility, facile scale-up synthesis methodology, and exceptional anti-corrosive characteristics, and it can effectively homogenize the Zn2+ flux during Zn plating/stripping, thus allowing stable Zn cycling. Benefiting from these comprehensive attributes, the as-prepared Zn-P-based anode provides superior electrochemical performance, including long-life cycling stability and high rate capability in practical coin and flexible pouch cells; thus, it holds great potential for developing advanced Zn-ion batteries. The findings of this study provide insights for a promising scalable pathway to fabricate highly efficient and reliable Zn-based anodes and will aid in the realization of advanced flexible energy-storage devices.
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