基于合成化工的ARM固态锂电池电解质开发及电化学性能分析  

Development and Electrochemical Performance Analysis of Arm Solid-state Lithium Battery Electrolyte Based on Synthetic Chemistry

作　　者：牛鹏丽 NIU Pengli(Ningde Times New Energy Technology Co.,Ltd.,Ningde 352100,China)

机构地区：[1]宁德时代新能源科技股份有限公司,福建宁德352100

出　　处：《化工管理》2024年第35期165-168,共4页Chemical Management

摘　　要：文章采用一种化学工程合成方法开发了丙烯酸酯无规共聚物(ARM)新型化工固态锂电池电解质。通过添加无机填料(如A_(2)O_(3)、SiO_(2))并优化电解质的制备工艺,成功提高了电解质的离子电导率和电化学性能。实验结果显示,ARM基电解质在室温下的离子电导率达3.2×10^(-4)S/cm,且具有较低的活化能和良好的锂离子迁移数。该电解质在NCM811|Li全电池中表现出优异的循环稳定性和倍率性能,展现出在高安全性、高能量密度固态锂电池中的应用潜力。This paper presents a novel chemical engineering synthesis method for developing an acrylic acid ester random copolymer(ARM)as a new type of solid-state lithium battery electrolyte.By adding inorganic fillers(such as A2O3 and SiO_(2))and optimizing the preparation process of the electrolyte,the ionic conductivity and electrochemical performance of the electrolyte were successfully improved.Experimental results show that the ARM-based electrolyte has an ionic conductivity of 3.2×10^(-4) S/cm at room temperature,with a lower activation energy and good lithium ion transference number.This electrolyte exhibits excellent cycle stability and rate performance in NCM811|Li full cells,demonstrating its potential for application in high-safety,high-energy-density solid-state lithium batteries.

关 键 词：固态锂电池 丙烯酸酯无规共聚物 离子电导率 合成化工 

分 类 号：TQ151[化学工程—电化学工业]