Fabricating High-Voltage LiNi0.5Mn1.5O4 Cathode Material for Lithium-Ion Batteries via Alcohol Solvent Precipitation Method

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2025-04-25 DOI:10.1134/S0036024425700475

Xuetian Li, Xiaoyan Xing, Wenlong Li, Zhongcai Shao

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Abstract

The LiNi_0.5Mn_1.5O₄ cathode material has increasingly become a focal point of research. This study presents the synthesis of LiNi_0.5Mn_1.5O₄ via alcohol solvent precipitation method. The impact of various reaction solvent systems on the morphology, phase state, and electrochemical performance of the LiNi_0.5Mn_1.5O₄ cathode material were investigated. The results showed that LiNi_0.5Mn_1.5O₄ cathode material prepared via alcohol solvent precipitation method demonstrated remarkable electrochemical properties: At a 0.2 C-rate, the initial discharge specific capacity was 123.12 mA h g^–1, and after 100 cycles, the discharge capacity retained at 94.0%. The discharge capacities were measured to be 114.63 (1.0 C), 97.63 (2.0 C), and 80.23 (5.0 C) mA h g^–1, respectively. The material demonstrated excellent rate performance and stability. Furthermore, the results indicate that the alcohol solvent precipitation method is a promising technology for the preparation of LiNi_0.5Mn_1.5O₄.

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酒精溶剂沉淀法制备锂离子电池高压LiNi0.5Mn1.5O4正极材料

LiNi0.5Mn1.5O4正极材料日益成为研究的热点。本研究采用醇溶剂沉淀法合成LiNi0.5Mn1.5O4。研究了不同反应溶剂体系对LiNi0.5Mn1.5O4正极材料的形貌、相态和电化学性能的影响。结果表明：采用醇溶剂沉淀法制备的LiNi0.5Mn1.5O4正极材料具有优异的电化学性能：在0.2 c倍率下，初始放电比容量为123.12 mA h g-1，循环100次后，放电比容量保持在94.0%；放电容量分别为114.63 （1.0 C）、97.63 （2.0 C）和80.23 (5.0 C) mA h g-1。该材料表现出优异的速率性能和稳定性。结果表明，醇溶剂沉淀法是制备LiNi0.5Mn1.5O4的一种很有前途的工艺。

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.