基于复合聚合物电解质（cpe）的Nb2O5纳米纤维增强聚丙烯腈(PAN)/纤维素(CA)/LiTFSI储能应用

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-09-12 DOI:10.1007/s10853-025-11451-y

Mohan Jagan, Aravinth Dhanasekaran, Subalakshmi Pragalathan, V. Velmurugan, S. P. Vijayachamundeeswari

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引用次数: 0

摘要

结构储能材料的进步对于优化电动汽车和飞行器的轻量化设计和空间效率至关重要。尽管如此，很少观察到适用于结构稳定电器的结构电解质的使用。以聚丙烯腈(PAN)/纤维素(CA)/LiTFSI为聚合物基体，Nb2O5为增强填料的复合固体聚合物电解质（cspe）的锂离子转移数为（Li+） 0.91，室温下离子电导率为2.23 × 10−3 S cm−1，电化学窗口为4.8 V。此外，它的电解质吸收率约为256%，孔隙率约为57%，活化能为0.20 eV，在约250℃时热收缩。这些结果表明，在聚丙烯腈（PAN）、纤维素（CA）和LiTFSI中添加20 Wt% Nb2O5是改善cpe电化学特性的可行方法，使其成为能源生产应用的理想选择。

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Nb2O5 nanofibres enhanced polyacrylonitrile (PAN)/cellulose (CA)/LiTFSI based on composite polymer electrolytes (CPEs) for energy storage applications

The advancement of structural energy storage materials is essential for optimising the lightweight design and spatial efficiency of electric automobiles and flying machines. Nonetheless, the utilisation of a structural electrolyte appropriate for structural stability electrical appliances is infrequently observed. The composite solid polymer electrolyte (CSPEs) utilising polyacrylonitrile (PAN)/cellulose (CA)/LiTFSI as the polymer matrix and Nb₂O₅ as reinforcement fillers exhibits a lithium-ion transference number of (Li⁺) 0.91, a conductivity of ions of 2.23 × 10⁻³ S cm⁻¹ at room temperature (RT), and an electrochemical window of 4.8 V. Additionally, it demonstrates an electrolyte uptake of approximately 256%, porosity around 57%, an activation energy of 0.20 eV, and thermal shrinking at approximately 250 ℃. These results highlight that adding 20 Wt% Nb₂O₅ to polyacrylonitrile (PAN), cellulose (CA), and LiTFSI is a viable way to improve the electrochemical characteristics of CPEs, making them ideal for applications in energy production.

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.