成核
阳极
电解质
锌
材料科学
半胱氨酸
化学工程
枝晶(数学)
电偶阳极
电镀(地质)
化学
无机化学
冶金
电极
有机化学
物理化学
几何学
数学
阴极保护
地球物理学
工程类
酶
地质学
作者
Pengjie Jiang,Qijun Du,Meng Shi,Wei Yang,Xiao Liang
标识
DOI:10.1002/smtd.202300823
摘要
Zinc anodes in aqueous batteries face challenges such as dendrite growth and interfacial instability. This study investigates the use of cysteine as an electrolyte additive to address these issues. By establishing the correlation between the size of zinc nuclei and the surface tensions/contact angle at the electrolyte-anode interface, it is demonstrated that the addition of cysteine in the electrolyte alters the surface tensions/contact angle at the electrolyte-anode interface and the nucleation process of zinc. This alteration results in the formation of smaller and more dispersed nuclei, as opposed to the formation of larger island grains. This has a profound impact on the subsequent deposition growth process, enabling smooth and uniform zinc electrodeposition without the formation of dendrites. Additionally, cysteine molecules create a stable interface during zinc plating and stripping, effectively preventing corrosion from side reactions. The incorporation of cysteine in the electrolyte significantly enhances cycling stability and extends the lifespan of zinc anodes in aqueous batteries.
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