Eutectic electrolyte boosting the stability of high-voltage Zn//VOPO4 battery

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-06 DOI:10.1016/j.matlet.2025.138886

Huanjing Zhang , Xinyu Wang , Zhanpeng Sun , Xueya Li , Xianyu Liu , Zhigang Fan

引用次数: 0

Abstract

VOPO₄ (VOP) materials are considered as high voltage cathodes for zinc-ion battery (ZIB). However, the VOP cathodes are afflicted with poor stability in aqueous electrolyte, leading to unsatisfied cycle life. Herein, eutectic electrolyte has been applied for the Zn//VOP battery, assembling with dimethyl sulfone and Zn(ClO₄)₂·6H₂O. Compared with aqueous Zn(ClO₄)₂ electrolyte, the eutectic electrolyte possesses stable electrochemical window, which could suppress the side reaction. Owing to the stability of eutectic electrolyte, the Zn//VOP battery deliver a high capacity of 79.8 mAh g⁻¹ with high average voltage of 1.46 V and stable for 750 cycles. These results indicate that eutectic electrolyte approach represents an effective strategy for improving electrochemical performance of ZIB.

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共晶电解液提高高压Zn//VOPO4电池稳定性

voo4 （VOP）材料被认为是锌离子电池（ZIB）的高压阴极材料。然而，VOP阴极在水溶液中稳定性差，导致循环寿命不理想。本文将共晶电解液与二甲基砜和Zn(ClO4)2·6H2O组装在一起，用于Zn/ VOP电池。与Zn(ClO4)2水溶液相比，共晶电解质具有稳定的电化学窗口，可以抑制副反应。由于共晶电解液的稳定性，锌//VOP电池具有79.8 mAh g−1的高容量，平均电压为1.46 V，可稳定运行750次。研究结果表明，共晶电解是提高ZIB电化学性能的有效途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive