Trace Amounts of Triple-Functional Additives Enable Reversible Aqueous Zinc-Ion Batteries from a Comprehensive Perspective.
Trace Amounts of Triple-Functional Additives Enable Reversible Aqueous Zinc-Ion Batteries from a Comprehensive Perspective.
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DOI：
10.1007/s40820-023-01050-4
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发表时间：
2023-03-31
影响因子：
26.6
通讯作者：
He, Guanjie
中科院分区：
文献类型：
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作者：
Chen, Ruwei;Zhang, Wei;Huang, Quanbo;Guan, Chaohong;Zong, Wei;Dai, Yuhang;Du, Zijuan;Zhang, Zhenyu;Li, Jianwei;Guo, Fei;Gao, Xuan;Dong, Haobo;Zhu, Jiexin;Wang, Xiaohui;He, Guanjie
关键词：
提出了一种具有痕量（ImM）的三功能添加剂来保护Zn阳极。添加剂降低析氢反应电位，促进原位固体电解质界面的形成，屏蔽“尖端效应”无枝晶Zn沉积，并通过三重保护实现高度可逆的Zn电镀/剥离行为在线版本包含补充材料，可通过10. 1007/s40820-023-01050-4获得。虽然它们具有成本效益和本质安全性，但水性锌离子电池遭受臭名昭著的副反应，包括析氢反应、Zn腐蚀和钝化以及在阳极上形成Zn枝晶。尽管已经证明了许多减轻这些副反应的策略，但它们只能从单个方面提供有限的性能改善。在此，三功能添加剂与微量氢氧化铵，证明了全面保护锌阳极。结果表明，电解质pH从4.1移动到5.2降低了HER电位，并促进了在Zn阳极上原位形成均匀的基于ZHS的固体电解质中间相。此外，阳离子NH 4+可以优先吸附在锌阳极表面，屏蔽“尖端效应”和均匀的电场。得益于这种综合保护，实现了无枝晶Zn沉积和高度可逆的Zn镀/剥离行为。此外，利用该三功能添加剂的优点，还可以改善Zn//MnO 2全电池的电化学性能。这项工作提供了一个新的策略，从全面的角度稳定锌阳极。在线版本包含补充材料，可通过10.1007/s40820-023-01050-4获得。
A triple functional additive with a trace amount (1 mM) was proposed to protect Zn anodes. The additive lowers the hydrogen evolution reaction potential, encourages the formation of an in situ solid electrolyte interphase and shields the “tip effect” Dendrite free Zn deposition and highly reversible Zn plating/stripping behaviors were realized by the triple protections The online version contains supplementary material available at 10.1007/s40820-023-01050-4. Although their cost-effectiveness and intrinsic safety, aqueous zinc-ion batteries suffer from notorious side reactions including hydrogen evolution reaction, Zn corrosion and passivation, and Zn dendrite formation on the anode. Despite numerous strategies to alleviate these side reactions have been demonstrated, they can only provide limited performance improvement from a single aspect. Herein, a triple-functional additive with trace amounts, ammonium hydroxide, was demonstrated to comprehensively protect zinc anodes. The results show that the shift of electrolyte pH from 4.1 to 5.2 lowers the HER potential and encourages the in situ formation of a uniform ZHS-based solid electrolyte interphase on Zn anodes. Moreover, cationic NH4+ can preferentially adsorb on the Zn anode surface to shield the “tip effect” and homogenize the electric field. Benefitting from this comprehensive protection, dendrite-free Zn deposition and highly reversible Zn plating/stripping behaviors were realized. Besides, improved electrochemical performances can also be achieved in Zn//MnO2 full cells by taking the advantages of this triple-functional additive. This work provides a new strategy for stabilizing Zn anodes from a comprehensive perspective. The online version contains supplementary material available at 10.1007/s40820-023-01050-4.
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影响因子：
32.5
作者：
Chen, Aosai;Zhao, Chenyang;Zhang, Naiqing
通讯作者：
Zhang, Naiqing
影响因子：
15.1
作者：
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Parkin, Ivan P. P.
影响因子：
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作者：
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影响因子：
9.5
作者：
Chan, Cheuk Ying;Wang, Ziqi;Xin, John H.
通讯作者：
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影响因子：
13.6
作者：
通讯作者：
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