之字形的
堆积
涂层
阳极
共价键
材料科学
多孔性
共价有机骨架
化学工程
枝晶(数学)
离子
化学物理
纳米技术
水溶液
化学
复合材料
电极
有机化学
工程类
物理化学
数学
几何学
作者
Can Guo,Xing Huang,Jianlin Huang,Xiubo Tian,Yuting Chen,Wen-hai Feng,Jie Zhou,Qi Li,Yifa Chen,Shunli Li,Ya‐Qian Lan
标识
DOI:10.1002/anie.202403918
摘要
Precise design and tuning of Zn hopping/transfer sites with deeper understanding of the dendrite‐formation mechanism is vital in artificial anode protective coating for aqueous Zn‐ion batteries (AZIBs). Here, we probe into the role of anode‐coating interfaces by designing a series of anhydride‐based covalent organic frameworks (i.e., PI‐DP‐COF and PI‐DT‐COF) with specifically designed zigzag hopping sites and zincophilic anhydride groups that can serve as desired platforms to investigate the related Zn2+ hopping/transfer behaviours as well as the interfacial interaction. Combining theoretical calculations with experiments, the ABC stacking models of these COFs endow the structures with specific zigzag sites along the 1D channel that can accelerate Zn2+ transfer kinetics, lower surface‐energy, homogenize ion‐distribution or electric‐filed. Attributed to these superiorities, thus‐obtained optimal PI‐DT‐COF cells offer excellent cycling lifespan in both symmetric‐cell (2000 cycles at 60 mA cm‐2) and full‐cell (1600 cycles at 2 A g‐1), outperforming almost all the reported porous crystalline materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI