材料科学
纳米线
水溶液
纳米结构
阴极
纳米技术
纳米棒
溶解
透射电子显微镜
化学工程
化学
物理化学
工程类
作者
Junwei Li,Lei Zhang,Wenli Xin,Min Yang,Huiling Peng,Yaheng Geng,Yang Li,Zichao Yan,Zhiqiang Zhu
出处
期刊:Small
[Wiley]
日期:2023-07-14
卷期号:19 (52)
被引量:7
标识
DOI:10.1002/smll.202304916
摘要
Abstract Te‐based materials with excellent electrical conductivity and ultra‐high volume specific capacity have attracted much attention for the cost‐efficient aqueous Zn batteries. However, the construction of functional structures with mild volume expansion and suppressed shuttle effects, enabling an expanded lifespan, is still a challenge for conversion‐type materials. Herein, the carbon‐coated zinc telluride nanowires (ZnTe@C NWs) are rationally designed as a high‐performance cathode material for aqueous Zn batteries. The carbon‐coated1D nanostructure could not only provide optimized transmission path for electrons and ions, but also help to maintain structure integrity upon volume variation and suppress intermediates dissolution, endowing the ZnTe@C NWs with improved cycling stability and reaction kinetics. Consequently, a reversible six‐electron reaction mechanism of ZnTe@C NWs based on Te 2− /Te 4+ conversion with excellent output capacity (586 mAh g −1 at 0.1 A g −1 ) and lifespan (>250 mAh g −1 retained for 400 cycles at 1 A g −1 ) is eventually achieved.
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