AI Article Synopsis
- Research on carbon-coated zinc telluride nanowires (ZnTe@C NWs) highlights their promising use as a cathode material in aqueous zinc batteries, thanks to their excellent electrical conductivity and capacity.
- The design of these nanowires enhances electron and ion transport, maintains structural integrity during volume changes, and suppresses the dissolution of harmful intermediates.
- This leads to a reversible six-electron reaction mechanism, achieving a remarkable output capacity of 586 mAh/g and over 400 cycles of stable performance.
Article 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 /Te conversion with excellent output capacity (586 mAh g at 0.1 A g ) and lifespan (>250 mAh g retained for 400 cycles at 1 A g ) is eventually achieved.
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| http://dx.doi.org/10.1002/smll.202304916 | DOI Listing |
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