CTAB-assisted hydrothermal synthesis of C@LiMn0.8Fe0.2PO4 nanospherical cathode materials

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2025-03-18 DOI:10.1016/j.matlet.2025.138424

Tongyu Lu , Zelin Wu , Haibo Wang , Chenbo Wang , Yuxuan Guo , Hui Wen , Zhiyong Zhao , Congwei Wang , Tao Huang , Junying Wang

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Abstract

Lithium manganese iron phosphate (LMFP) is increasingly attracting attention in the industry due to its excellent performance advantages. However, its limited electrical conductivity and lithium-ion diffusivity still hinder its practical application. In this paper, we introduced a method for the synthesis of LiMn_0.8Fe_0.2PO₄/C nano spherical composites by using cetyltrimethylammonium bromide (CTAB)-assisted hydrothermal method. The material doped with 1 mmol of CTAB(LMFP/C-1) significantly prevented particle agglomeration and reduced the particle size, which improved the electrical conductivity of the material and exhibited excellent multiplicative and cycling properties. The results showed that LMFP-1can release the initial specific capacity around 152.4 mAh·g⁻¹ at 0.1C, and the capacity retention rate was 94.35 % after 500 cycles at 1C. This research provides a method to improve the cathode materials for lithium-ion batteries.

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ctab辅助水热合成C@LiMn0.8Fe0.2PO4纳米球形正极材料

磷酸锰铁锂（LMFP）由于其优异的性能优势，越来越受到业界的关注。然而，它有限的导电性和锂离子的扩散性仍然阻碍了它的实际应用。本文介绍了十六烷基三甲基溴化铵（CTAB）辅助水热法制备LiMn0.8Fe0.2PO4/C纳米球形复合材料的方法。掺入1 mmol CTAB（LMFP/C-1）的材料可明显阻止颗粒团聚，减小颗粒尺寸，提高材料的电导率，并表现出优异的乘法和循环性能。结果表明：lmpp -1在0.1C下可释放152.4 mAh·g−1左右的初始比容量，在1C下循环500次后容量保持率为94.35%；本研究为改进锂离子电池正极材料提供了一种方法。

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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