通过离子凝胶中的亲水/疏水成分设计调节水的梯度分布，实现稳定的锌离子电池

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-04-25 DOI:10.1016/j.cej.2025.162991

Rong Zheng, Nan Jiang, Baojun Wang, Chengyi Hou, Qinghong Zhang, Hongzhi Wang, Yaogang Li, Kerui Li

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引用次数: 0

摘要

锌离子电池（zib）因其安全性、成本效益和环境友好性而成为下一代储能系统的有希望的候选者。然而，水凝胶和离子凝胶电解质之间的权衡，如水凝胶中受限的电化学窗口和离子凝胶中缓慢的离子迁移，对实现稳定高效的ZIB性能构成了重大挑战。在本研究中，通过调节其亲疏水组成，制备了一种具有梯度水分布的新型离子凝胶电解质（GW-IGE）。这种设计最佳地平衡水合水平，以增强离子传输和抑制树突的形成。所得的GW-IGE具有5.04 mS cm−1的高离子电导率，延长的电化学循环寿命超过7000 h，平均库仑效率为99.4 %。此外，锌||的PANI全电池表现出优异的容量保持率为90% %。这项工作强调了离子凝胶电解质中梯度水调节的有效性，为高性能ZIBs的发展提供了新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Regulating the gradient water distribution via hydro-philic/phobic compositional design in ionogels for stable zinc ion batteries

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Regulating the gradient water distribution via hydro-philic/phobic compositional design in ionogels for stable zinc ion batteries

Zinc-ion batteries (ZIBs) are promising candidates for next-generation energy storage systems due to their safety, cost-effectiveness, and environmental friendliness. However, the trade-offs between hydrogel and ionogel electrolytes, such as restricted electrochemical windows in hydrogels and sluggish ion migration in ionogels, pose significant challenges to achieving stable and efficient ZIB performance. In this study, an innovative ionogel electrolyte with a gradient water distribution (GW-IGE) was developed by modulating the hydrophilic and hydrophobic composition. This design optimally balances hydration levels to enhance ionic transport and suppress dendrite formation. The resulting GW-IGE achieves a high ionic conductivity of 5.04 mS cm⁻¹, an extended electrochemical cycling life of over 7000 h, and an average Coulombic efficiency of 99.4 %. Furthermore, the Zn||PANI full cell demonstrates excellent capacity retention of 90 %. This work highlights the effectiveness of gradient water regulation in ionogel electrolytes, providing a new pathway for the advancement of high-performance ZIBs.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.