材料科学
涂层
阳极
三嗪
聚合物
多孔性
电阻抗
化学工程
复合材料
高分子化学
电极
化学
物理化学
电气工程
工程类
作者
Chengfeng Wang,Liqiu Ren,Yuying Liu,Yue Qi,Shuo Yang,Donglai Han,Heng‐guo Wang
标识
DOI:10.1016/j.surfcoat.2024.130754
摘要
Aqueous zinc-ion batteries (AZIBs) have superiorities such as high safety, low redox potential and low cost, but they still have the disadvantages of uncontrollable zinc dendrite growth, severe corrosion, and hydrogen evolution reactions. This study synthesized a porous organic polymer based on anthraquinone and triazine units (C-PAT) and used it as a protective coating for zinc anode of AZIBs. Profiting by high hydrophobicity of C-PAT, the electrode-electrolyte interface corrosion was reduced, thus achieving a stable Zn anode with low interface impedance. The symmetrical battery assembled with Zn anode modified with C-PAT could stably cycle for 1820 h maintaining a lower polarization voltage of 33 mV at 0.25 mA cm−2. The full battery (C-PAT@Zn//NHVO) shows a high initial capacity of 358.2 mAh g−1 at 1 A g−1 and displays an impressive cycling performance with high reversible capacity of 200 mAh g−1 after 300 cycles. This study could provide a new course for the application of porous organic polymers as the protective coatings of Zn anode to obtain long-life AZIBs.
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