Impact of fluorine content on the electrochemical properties of carbon fluoride-based thermal batteries

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

Materials Letters Pub Date : 2025-08-22 DOI:10.1016/j.matlet.2025.139358

Jiying Chang, Chao Zhang, Xin Yang, Shaoming Qiao, Xianghua Chen

引用次数: 0

Abstract

Carbon fluoride (CF_x), recognized as a high-voltage material, exhibits elevated voltage and tunable electrochemical behavior. This study systematically investigates the impact of F content on the physical properties and electrochemical performance. Thermogravimetric analysis revealed that CF_x with 60 % F content maintains an impressive mass retention of 98.2 % at temperatures up to 450°C. At current density of 20 mA/cm², the CF_x containing 58 % F atom achieves the highest specific capacity of 578 mAh/g. Furthermore, CF_x with 55 % F content attains a peak voltage exceeding 3.0 V. Hence, F contens influence the application of CF_x. This work provides valuable insights for the design of CF_x cathodes in thermal batteries.

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氟含量对氟碳基热电池电化学性能的影响

氟化碳（CFx）是一种公认的高压材料，具有高电压和可调的电化学行为。本研究系统地考察了F含量对材料物理性能和电化学性能的影响。热重分析表明，含F量为60%的CFx在高达450°C的温度下保持98.2%的质量保持率。在电流密度为20 mA/cm2时，含58% F原子的CFx达到了578 mAh/g的最高比容量。此外，55% F含量的CFx峰值电压超过3.0 V。因此，F的含量影响CFx的应用。这项工作为热电池CFx阴极的设计提供了有价值的见解。

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