Exploring the large-scale production technology of NCM ternary material

ZHAN Linghao; WANG Jinkun; XIE Leqiong; WANG Li; YU Lanjian; HE Xiangming

doi:10.19996/j.cnki.ChinBatlnd.2025.03.008

Abstract：Lithium nickel cobalt manganese oxide(NCM)is a mature ternary layered cathode material with high energy density,superior rate performance,and good cycling performance,which has been widely used at present.The industrialization of NCM materials faces technical challenges such as powder conveying,uniform mixing,atmosphere protection,and stable sintering,and due to safety and consistency considerations,screening and iron removal are required.This article summarizes the process flow and equipment for preparing NCM materials using solid-phase sintering method under industrial conditions,as well as the powder transportation.The entire process of NCM material industrialization production,including precursor preparation,batching,primary sintering,secondary sintering,water washing,and finished product post-treatment processes.The production line uses typical equipment such as reducing scales,high-speed mixers,roller kilns,airflow mills,and water washing kettles,and adds ultrasonic vibrating screens and iron removers at appropriate positions for screening and iron removal.The differences between laboratory environment and industrial production were compared,including process complexity,equipment cost,atmosphere control,preparation accuracy,product performance,and other aspects.This article summarizes relevant literature and compares and analyzes work,and believes that the production line of lithium battery cathode materials will continue to develop towards intelligence,high production capacity,and environmental friendliness in the future.The focus of equipment improvement is on adapting to new processes and increasing production capacity,and the design of new processes should also consider the current production situation and cost as much as possible.The two complement each other in order to jointly promote the sustainable development of industrialization.This article aims to provide reference for scientific researchers,enhance their understanding of current mainstream production processes,production lines and equipment.It seeks to promote the integration and optimization of production processes,and improve the automation and intelligence level of production lines.It will also contribute to the integration of scientific research direction and production demand,and promote the transformation of cutting-edge scientific research and new technologies and materials into products.