一种具有宽电化学窗口和高稳定性的新型凝胶电解质用于钠金属电池

IF 3.1 3区化学 Q3 CHEMISTRY, PHYSICAL Chemical Physics Letters Pub Date : 2025-04-16 DOI:10.1016/j.cplett.2025.142099

Weilin Guo , Xiaoliang Zhou , Limin Liu , Ming Fang , Bo Zhang , Jingjie Li , Li Zhang , Jie Li , Qian Yang

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引用次数: 0

摘要

开发了一种凝胶电解质聚乙二醇双丙烯酸酯@玻璃纤维分离器（PEGDA@GF），通过将液体电解质的优异性能与特定骨架结构内聚合物的机械强度相结合，具有优异的离子导电性和出色的长期稳定性。PEGDA@GF的电化学稳定窗口有效地扩展到5.3 V （vs. Na+/Na）。此外，其离子电导率高达1.38 × 10−3 S cm−1，钠离子转移数高达0.79。在1.0℃下循环1000次后，Na|PEGDA@GF|NVP全电池的库仑效率约为99.30%，容量保持率为90.76%。

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A novel gel electrolyte with a wide electrochemical window and high stability for sodium metal batteries

A gel electrolyte Polyethylene Glycol Diacrylate @ Glass fiber separator (PEGDA@GF) with excellent ionic conductivity and outstanding long-term stability by integrating the excellent performance of liquid electrolytes with the mechanical strength of polymers within a specific skeleton structure is developed. The electrochemical stability window of PEGDA@GF has been effectively extended to 5.3 V (vs. Na⁺/Na). Additionally, it exhibits a high ionic conductivity of 1.38 × 10⁻³ S cm⁻¹ and a sodium-ion transference number reaching as high as 0.79. The Na|PEGDA@GF|NVP full cells maintain a coulombic efficiency of about 99.30 % and a capacity retention rate of 90.76 % after 1000 cycles at 1.0C.

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.