阳极
阴极
位阻效应
剥离(纤维)
电镀(地质)
离子
水溶液
化学
电化学
枝晶(数学)
材料科学
吸附
化学工程
无机化学
复合材料
电极
有机化学
物理化学
工程类
几何学
地质学
数学
地球物理学
作者
Guigui Liu,Yongchao Tang,Yue Wei,Hongqing Li,Jianping Yan,Zhenfeng Feng,Wencheng Du,Qi Yang,Minghui Ye,Yufei Zhang,Zhipeng Wen,Xiaoqing Liu,Cheng Chao Li
标识
DOI:10.1002/anie.202407639
摘要
Gradual disability of Zn anode and high negative/positive electrode (N/P) ratio usually depreciate calendar life and energy density of aqueous Zn batteries (AZBs). Herein, within original Zn2+‐free hydrated electrolytes, a steric hindrance/electric field shielding‐driven “hydrophobic ion barrier” is engineered towards ultradurable (002) plane‐exposed Zn stripping/plating to solve this issue. Guided by theoretical simulations, hydrophobic adiponitrile (ADN) is employed as a steric hindrance agent to ally with inert electric field shielding additive (Mn2+) for plane adsorption priority manipulation, thereby constructing the “hydrophobic ion barrier”. This design robustly suppresses the (002) plane/dendrite growth, enabling ultradurable (002) plane‐exposed dendrite‐free Zn stripping/plating. Even being cycled in Zn‖Zn symmetric cell over 2150 h at 0.5 mA cm‐2, the efficacy remains well‐kept. Additionally, Zn‖Zn symmetric cells can be also stably cycled over 918 h at 1 mA cm‐2, verifying uncompromised Zn stripping/plating kinetics. As‐assembled anode‐less Zn‖VOPO4·2H2O full cells with a low N/P ratio (2:1) show a high energy density of 75.2 Wh kg‐1full electrode after 842 cycles at 1 A g‐1, far surpassing counterparts with thick Zn anode and low cathode loading mass, featuring excellent practicality. This study opens a new avenue by robust “hydrophobic ion barrier” design to develop long‐life anode‐less Zn batteries.
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