溶剂化
电解质
阳极
材料科学
金属
化学物理
水溶液
枝晶(数学)
化学工程
微量金属
离子
纳米技术
化学
电极
物理化学
冶金
有机化学
工程类
数学
几何学
作者
Guosheng Duan,Yang Wang,Leilei Sun,Zhean Bao,Bin Luo,Sinan Zheng,Zhizhen Ye,Jingyun Huang,Yingying Lü
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-11-13
卷期号:17 (22): 22722-22732
被引量:2
标识
DOI:10.1021/acsnano.3c07257
摘要
Aqueous Zn metal batteries are considered promising energy storage devices due to their high energy density and low cost. Unfortunately, such great potential is at present obscured by two clouds called dendrite growth and parasitic reactions. Herein, trace amounts of sodium cyclamate (CYC-Na) are introduced as an electrolyte additive, and accordingly, an atomic-pinning-induced interfacial solvation mechanism is proposed to summarize the effect of trace addition. Specifically, coadsorption of -NH- and -SO3 groups overcomes the ring-flipping effect and pins the CYC anion near the Zn anode surface in parallel, which significantly modifies the Zn2+ solvation sheath at the interface. This process homogenizes the surface Zn2+ flux and reduces the H2O and SO42- content on the surface, thus eliminating byproducts and leveling Zn deposition. Cells with trace CYC-Na cycle stably for 3650 h and still cycle for 330 h at high depths of discharge of 56.9%. This work dispels the clouds for efficient trace additives for AZMBs.
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