Li Yifan, Yuan Jingjing, Qiao Yifan, Xu Hui, Zhang Zhihao, Zhang Wenyao, He Guangyu, Chen Haiqun
Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China.
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China.
Dalton Trans. 2023 Aug 29;52(34):11780-11796. doi: 10.1039/d3dt01764h.
Zinc-ion batteries are one of the promising energy storage devices, which have the advantages of environmental friendliness, high safety and low price and are expected to be used in large-scale battery application fields. However, four prominent water-induced adverse reactions, including zinc dendrite formation, zinc corrosion, passivation and the hydrogen evolution reaction in aqueous systems, seriously shorten the cycling life of zinc-ion batteries and greatly hinder their development. Based on this, polymer gel electrolytes have been developed to alleviate these issues due to their unique network structure, which can reduce water activity and suppress water-induced side reactions. Based on the challenges of polymer gel electrolytes, this review systematically summarizes the latest research progress in the use of additives in them and explores new perspectives in response to the existing problems with polymer electrolytes. In order to expand the performance of polymer gel electrolytes in zinc-ion batteries, a range of different types of additives are added physical/chemical crosslinking, such as organic or inorganic substances, natural plants, . In addition, different types of additives and polymerization crosslinking from different angles essentially improve the ionic conductivity of the gel electrolyte, inhibit the growth of zinc dendrites, and reduce hydrogen evolution and oxygen-absorbed corrosion. After these modifications of polymer gel electrolytes, a more stable and superior electrochemical performance of zinc-ion batteries can be obtained, which provides some strategies for solid-state zinc-ion batteries.
锌离子电池是一种很有前景的储能装置，具有环境友好、安全性高和价格低廉等优点，有望应用于大规模电池领域。然而，水系体系中锌枝晶形成、锌腐蚀、钝化和析氢反应这四种突出的水致不良反应，严重缩短了锌离子电池的循环寿命，极大地阻碍了其发展。基于此，聚合物凝胶电解质因其独特的网络结构被开发出来以缓解这些问题，这种结构可以降低水活性并抑制水致副反应。基于聚合物凝胶电解质面临的挑战，本文综述系统总结了在其中使用添加剂的最新研究进展，并针对聚合物电解质存在的问题探索新的视角。为了提升聚合物凝胶电解质在锌离子电池中的性能，通过物理/化学交联添加了一系列不同类型的添加剂，如有机或无机物质、天然植物等。此外，不同类型的添加剂和来自不同角度的聚合交联从本质上提高了凝胶电解质的离子电导率，抑制了锌枝晶的生长，并减少了析氢和吸氧腐蚀。经过这些对聚合物凝胶电解质的改性后，可以获得锌离子电池更稳定、更优异的电化学性能，这为固态锌离子电池提供了一些策略。
