用Li1.3Al0.3Ti1.7(PO4)3涂层对LiNi0.5Co0.2Mn0.3O2进行表面改性，提高其电化学性能

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2025-04-28 DOI:10.1016/j.elecom.2025.107946

Nianchun Yao , Min Zhang , Yulin He , Keyin Cao , Ying Li , Ziqiang Wang

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引用次数: 0

摘要

本文提出了一种简化的合成Li1.3Al0.3Ti1.7(PO4)3 （LATP）包覆LiNi0.5Co0.2Mn0.3O2 （NCM523）的工艺，通过调整LATP含量来优化电化学性能。LATP作为一种优异的锂离子导电层，在50°C下可以减少极化并提高循环性能。x射线衍射（XRD）证实，所有样品均保持稳定的α - nafeo2层状结构。在室温和50℃条件下对半电池和满电池进行性能测试，结果表明，2 wt%的latp涂层样品具有最佳的电化学性能。循环伏安（CV）和电化学阻抗谱（EIS）测试结果表明，latp包覆后的样品具有较高的锂离子扩散系数和较低的电荷转移电阻，提高了样品的倍率性能。

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Improving the electrochemical performance of LiNi0.5Co0.2Mn0.3O2 via surface modification with Li1.3Al0.3Ti1.7(PO4)3 coating

This paper presents a simplified process for synthesizing LiNi_0.5Co_0.2Mn_0.3O₂ (NCM523) coated with Li_1.3Al_0.3Ti_1.7(PO₄)₃ (LATP) to optimize electrochemical characteristics by adjusting LATP content adjustment. LATP, as a superior Li-ion conductive layer, reduces polarization and enhances cycling performance at 50 °C. X-ray diffraction (XRD) confirms that all samples maintain a stable alpha-NaFeO₂ layered structure. Performance tests of half and full batteries at room temperature and 50 °C show that the 2 wt% LATP-coated sample exhibits the best electrochemical performance. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) show that the LATP-coated sample has higher lithium ion diffusion coefficients and lower charge transfer resistance, which improves rate capability.

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.