通过两性氨基酸对长周期锌电池进行溶解修饰和界面化学调控

IF 24.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL
Hengwei Wang, Keliang Wang, Bin Liang, Manhui Wei, Jianyin Xiong, Daiyuan Zhong, Pucheng Pei
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引用次数: 0

摘要

为了解决可充电锌-空气电池中的枝晶生长和锌腐蚀问题,在电解液中引入了多功能甘氨酸/缬氨酸添加剂。通过调节溶壳结构和增强界面稳定性,这些添加剂旨在保护锌阳极的可逆性和稳定性。甘氨酸/缬氨酸分子在强碱性环境中取代了活性水分子,从而抑制了界面上[Zn(H2O)6]2+ 和 Zn5(OH)8(OAc)2-2H2O 副产物的形成。此外,在充放电过程中,它们还能在锌金属表面形成疏水双电层,并在原位构建固体电解质界面层。这进一步抑制了氢演化反应和枝晶的生长。锌||锌电池、锌||铜电池和锌-空气全电池优异的长期循环稳定性证明了甘氨酸/缬氨酸添加剂的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Solvation Modification and Interfacial Chemistry Regulation Via Amphoteric Amino Acids for Long-Cycle Zinc Batteries

Solvation Modification and Interfacial Chemistry Regulation Via Amphoteric Amino Acids for Long-Cycle Zinc Batteries

To address the issues of dendrite growth and zinc corrosion in rechargeable zinc-air batteries, multifunctional glycine/valine additives are introduced into the electrolyte. By regulating the solvation shell structure and enhancing interfacial stability, these additives aim to protect the reversibility and stability of the zinc anode. Glycine/valine molecules inhibit the formation of the [Zn(H2O)6]2+ and Zn5(OH)8(OAc)2·2H2O by-products at the interface by replacing active water molecules in a strong alkaline environment. Additionally, they form a hydrophobic electric double layer on the zinc metal surface, during the charge/discharge process, and construct an in situ solid electrolyte interface layer. This further suppresses the hydrogen evolution reaction and dendrite growth. The superior long-term cycling stability of Zn||Zn cells, Zn||Cu, and zinc-air full cells demonstrates the effectiveness of glycine/valine additives.

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来源期刊
Advanced Energy Materials
Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS
CiteScore
41.90
自引率
4.00%
发文量
889
审稿时长
1.4 months
期刊介绍: Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.
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