材料科学
阳极
纳米复合材料
水溶液
锌
图层(电子)
离子
化学工程
电化学
电偶阳极
纳米技术
复合材料
冶金
电极
阴极保护
有机化学
化学
物理化学
工程类
作者
Jinchang Wang,Jingsong Peng,Weifeng Huang,Hanqin Liang,Yu Hao,Jiefei Li,Haibin Chu,Hang Wei,Yuanyuan Zhang,Jian Liu
标识
DOI:10.1002/adfm.202316083
摘要
Abstract Due to its abundance of natural resources, high theoretical capacity, and suitable redox potential (−0.76 V vs SHE), Zn anode has received extensive attention both from academy and industry. However, the coexistence of Zn and H 2 O, which is unfortunately thermodynamically unstable, always involves severe metal corrosion, H 2 evolution, dendrite growth, resulting in low reversibility of Zn anode. Herein, a phase transfer method is adapted to design a porous conductive protective layer on the Zn anode, denoted as (PVDF (Polyvinylidene fluoride)/CNTs(Carbon Nanotubes)‐PT(phase transfer) @ Zn). Based on in situ characterization, COMSOL simulation, and migration energy barrier calculation, it can be demonstrated that PVDF/CNTs‐PT @ Zn effectively inhibited the production of Zn dendrites and the side reactions triggered by H 2 O, achieving uniform deposition. Especially, the full picture of Zn deposition is observed using in situ computed tomography (CT). The symmetrical cell using the PVDF/CNTs‐PT @ Zn demonstrates dendrite‐free plating/stripping and possesses much better cycle stability than the bare Zn. A stable rechargeable full battery is demoed through coupling the PVDF/CNTs‐PT @ Zn anode with commercial V 2 O 5 . The strategy showcases a feasible pathway to inhibit Zn dendrite and side reactions in aqueous Zn ion battery, opening a promising avenue for the construction of metal anode protection layer.
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