Zinc chemistry regulated by chitosan-based poly(aprotic/protic ionic liquid)s with multi-anion-cation interactions for highly reversible Zn-ion batteries

被引：0

作者：

Xu, Yongzhen ^{[1
]}

Chen, Kui ^{[1
]}

Xu, Mingwei ^{[1
]}

Li, Yue ^{[1
]}

Wu, Qing ^{[1
]}

Li, Shizhao ^{[1
]}

Xie, Chunhui ^{[1
]}

Li, Yunqi ^{[1
]}

Xie, Haibo ^{[1
]}

Huang, Jun ^{[1
]}

机构：

[1] Guizhou Univ, Coll Mat & Met, Dept Polymer Mat & Engn, Guiyang 550025, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2025年 / 18卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1039/d4ee05442c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aqueous Zn-ion batteries (AZIBs) provide an enticing option for energy storage with cost-effectiveness, integral safety, and environmental benignity. However, the reversibility and lifespan of AZIBs are constrained by the uncontrolled Zn chemistry occurring both within the bulk electrolyte and at the electrode/electrolyte interface. Herein, taking the particular structural feature of chitosan (CS), a series of robust CS-based poly(protic ionic liquid)s (CPPILs) and poly(aprotic/protic ionic liquid)s (CPAPILs) were firstly prepared to regulate Zn chemistry through synergistic anions and cations. The betaine hydrochloride-derived CPAPILs additive (CPAPILs-B) showed a better ability to reorganize the Zn2+ solvation structure and enhance ion transport via the carboxylate and chloride anions, while the protonated amine and quaternary ammonium cations in CPAPILs-B are effectively anchored to the Zn anode, providing ample zincophilic sites and a uniform electric field. Consequently, the CPAPILs-B with multi-anion-cation interactions endows Zn//Zn symmetrical cells with long-term cycling durability of 5925 h at 1 mA cm-2/0.5 mA h cm-2 and an ultra-high cumulative plating capacity (CPC) exceeding 7550 mA h cm-2 at 10 mA cm-2/1 mA h cm-2. This study introduces an eco-friendly, sustainable CPAPILs-B additive and highlights the innovative molecular design and multi-anion-cation synergy as a promising strategy for developing green additives to enhance the reversibility of AZIBs.

引用

页数：13