Abstract

Significance This paper aims to summarize the current status of coating technology applications and explore its role in enhancing the overall performance of lithium-ion batteries， thereby promoting advancements in lithium-ion battery technology.

Progress The principles， advantages， disadvantages， and industrial application progress of three coating methods， wet， dry，and vapor phase methods， are reviewed. The wet chemical process is simple to operate but requires high equipment standards.The dry chemical process is cost-effective but energy-intensive. The vapor phase chemical process offers high purity but involves complex procedures. Research on coating technology focuses on developing new coating materials， optimizing environmentally friendly coating processes， and improving the functionality and stability of the coating layer. Several companies have made significant progress in applying coating technology to lithium-ion battery cathode materials， advancing the practical implementation of this technology.

Conclusions and Prospects Developing more advanced coating technologies is expected to significantly improve the performance of lithium-ion batteries， providing more efficient and reliable energy storage solutions. Research trends include：

1） Exploring coating mechanisms. Investigating the interface reaction mechanisms between the coating layer and the cathode material to reduce adverse reactions and improve material stability.

2） Optimizing coating processes. By refining the coating process to optimize coating layer thickness and uniformity， the electrochemical and cycling performance of lithium-ion battery cathode materials can be enhanced.

3） Exploring coating characterization. Emerging techniques such as high-throughput analysis， in-situ characterization， and nanoscale characterization will significantly improve the research efficiency and accuracy of surface coating layers， providing strong support for the development and application of new materials.

4） Selection and design of materials. Choosing suitable coating materials and designing coating layers with excellent performance and stability remain key challenges.

5） Process optimization. Developing more environmentally friendly and energy-efficient coating processes to reduce production costs and environmental pollution is a pressing issue.

6） Industrial application. The stability and reliability of coating technology in large-scale production need further validation.

Keywords：lithium-ion battery； cathode material； coating； industrialization progress

Get Citation:ZHOU Yuan， PAN Wencheng， MA Luxiang， et al. Application and challenges of coating technology in cathode materials of lithiumion batteries［J］. China Powder Science and Technology，2025，31（1）：1−13.

Received:2024-07-11.Revised:2024-09-15,Online:2024-10-08.

Funding Project:国家自然科学基金项目，编号：U20A20337；青海省科技成果转化专项项目，编号：2020-GX-108。

First Author:周园（1972—），男，教授，博士，博士生导师，青海省“高端创新人才千人计划”培养领军人才，研究方向为无机储能材料开发及应用。E-mail： yzhou712@sina. com。

DOI：10.13732/j.issn.1008-5548.2025.01.007

CLC No:TB4                  Type Code:A

Serial No:1008-5548（2025）01-0001-13