溶剂化
溶解
化学
成核
溶剂化壳
动力学
电解质
水溶液
锌
配体(生物化学)
化学物理
无机化学
分子
物理化学
有机化学
电极
物理
量子力学
受体
生物化学
作者
Bo Liu,Cong Wei,Zixuan Zhu,Yanyan Fang,Zenan Bian,Xin Lei,Ya Zhou,Chongyang Tang,Yitai Qian,Gongming Wang
标识
DOI:10.1002/anie.202212780
摘要
Designing water-deficient solvation sheath of Zn2+ by ligand substitution is a widely used strategy to protect Zn metal anode, yet the intrinsic tradeoff between Zn nucleation/dissolution kinetics and the side hydrogen evolution reaction (HER) remains a huge challenge. Herein, we find boric acid (BA) with moderate ligand field interaction can partially replace H2 O molecules in the solvation sheath of Zn2+ , forming a stable water-deficient solvation sheath. It enables fast Zn nucleation/dissolution kinetics and substantially suppressed HER. Crucially, by systematically comparing the ligand field strength and solvation energies between BA and the ever-reported electrolyte additives, we also find that the solvation energy has a strong correlation with Zn nucleation/dissolution kinetics and HER inhibition ability, displaying a classic volcano behavior. The modulation map could provide valuable insights for solvation sheath design of zinc batteries and beyond.
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