Electrochemical behavior of BaTiO3 embedded spongy PVDF-HFP/cellulose blend as a novel gel polymer electrolyte for lithium-ion batteries

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

Materials Letters Pub Date : 2022-01-01 DOI:10.1016/j.matlet.2021.130938

S. Aadheeshwaran, K. Sankaranarayanan

引用次数: 2

Abstract

Herein, a microporous poly(vinylidene fluoride co-hexafluoropropylene)/cellulose/ BaTiO₃ membrane with a sponge-like architecture has been prepared by spinning cum immersion precipitation route followed by hydrolysis with lithium hydroxide for the deacetylation of cellulose acetate. The fabricated composite membrane-based LiFePO₄|Li cell achieves a high ionic conductivity of 1.36 mS cm⁻¹ at 30 °C. Additionally, the electrochemical system exhibits a good discharge capacity of 150.1 mAh g⁻¹ and excellent cycling stability with a capacity retention of 95% after 200 cycles at a 0.1C rate. The transference number of the system is computed to be 0.51. According to these findings, the proposed gel polymer electrolytes have a great potential for use in lithium-ion batteries.

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BaTiO3包埋海绵状PVDF-HFP/纤维素共混物作为新型锂离子电池凝胶聚合物电解质的电化学行为

本文采用纺丝-浸渍沉淀法制备了海绵状结构的聚偏氟乙烯-共六氟丙烯/纤维素/ BaTiO3微孔膜，并用氢氧化锂水解醋酸纤维素脱乙酰。制备的复合膜基LiFePO4|锂电池在30°C下具有1.36 mS cm−1的高离子电导率。此外，该电化学体系具有150.1 mAh g−1的良好放电容量和良好的循环稳定性，在0.1C倍率下循环200次后容量保持率为95%。系统的传输数计算为0.51。根据这些发现，所提出的凝胶聚合物电解质在锂离子电池中具有很大的应用潜力。

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