Gradient Nanoporous Copper-Zinc Alloy Regulating Dendrite-Free Zinc Electrodeposition for High-Performance Aqueous Zinc-Ion Batteries.

• Tác giả: Li-Bo Chen, Gao-Feng Han, Jian-Hui Jia, Qing Jiang, Xing-You Lang, Jie Liu, Huan Meng, Qing Ran, Hang Shi, Tong-Hui Wang, Zi Wen
• Ngôn ngữ: eng
• Ký hiệu phân loại: 639.11 Hunting mammals
• Thông tin xuất bản: United States : Nano letters , 2025
• Bộ sưu tập: NCBI
• ID: 686043

Tóm tắt

 Zinc metal is an attractive anode material of aqueous batteries, but its practical use is persistently hampered by irregular zinc electrodeposition/dissolution and parasitic side reactions. Here we report engineering copper-zinc alloy with a composition- and structure-gradient nanoporous architecture as an effective strategy to regulate high-efficiency and dendrite-free zinc electrodeposition/dissolution for high-performance aqueous zinc-ion batteries. The dual-gradient nanoporous copper-zinc alloy electrodes not only guarantee electron and ion transport pathways but work as host materials with abundant zincophilic sites to guide zinc nucleation and deposition, enabling highly reversible zinc plating/stripping behaviors with low and stable voltage polarizations at various current densities and an ultralong lifespan of >
 6700 h. When assembled with carbon cloth-supported Zn