废锂电池修复过程中碳酸乙烯酯的去除研究  

Study on Removing Ethylene Carbonate in Spent Batteries Repair

作　　者：张哲鸣[1] 徐亚威[1] 贺文智[2] 李光明[2] 吴正斌[1] 

机构地区：[1]中国科学院深圳先进技术研究院电动汽车研发中心,广东深圳518055 [2]同济大学环境科学与工程学院,上海200092

出　　处：《广州化工》2017年第17期25-28,共4页GuangZhou Chemical Industry

基　　金：国家自然基金面上项目<超声场协同的废锂电中钴酸锂晶体结构水热修复研究>(No:51078286);深圳市科技研发资金<新能源车辆动力电池系统集成与应用技术研究>(No:GJHZ20150316144412072);深圳市战略新兴产业发展专项资金<应用于锂-空气电池的钙钛矿催化剂及电极反应界面优化>(No:JCYJ20140417113430702)

摘　　要：对废电池正极材料钴酸锂的修复过程中,电解液中的碳酸乙烯酯(EC)对修复影响最大。本文验证研究了钴酸锂晶体中EC的存在、EC去除的有效性及降解机理,在反应条件为超声功率750 W、反应温度80℃、反应时间6 h的条件下,在超声反应釜内,经超声水热处理后,EC能够被有效降解去除,该研究将有助于提高废电池资源化回收利用效率。Ethylene carbonate （EC） in the electrolyte has the biggest influence on repairing lithium cobalt oxide （ LiCoO2 ） in the process of repairing and recycling positive electrode material of spent batteries. Verified the existence of EC in LiCoO2, the effectiveness of removing EC from the surface of spent LiCoO2 was analyzed, the degradation mechanism of EC was analyzed and discussed. Under the conditions of ultrasonic power of 750 W and reaction temperature of 80℃, reaction time of 6 h, under ultrasound hydrothermal conditions, after hydrothermal treatment and ultrasonic treatment, EC can be got rid of effectively. The study will help to improve the efficiency of recycling of spent batteries.

关 键 词：碳酸乙烯酯 废电池 钴酸锂 去除 

分 类 号：X705[环境科学与工程—环境工程]