废旧锂离子电池溶胶-凝胶法制备CoFe_2O_4磁致伸缩材料的研究  

Studies on the preparation of CoFe_2O_4 magnetostrictive materials by sol-gel method using spent Li-ion batteries

作　　者：席国喜[1] 许会道[1] 席跃宾 张文[1] 王路[1] 

机构地区：[1]河南师范大学环境学院化学化工学院河南省环境污染控制重点实验室,河南新乡453007

出　　处：《功能材料》2016年第1期1195-1198,共4页Journal of Functional Materials

基　　金：国家自然科学基金重点资助项目(51174083);教育部博导基金资助项目(20114104110004)

摘　　要：以废旧锂离子电池为原料,采用溶胶-凝胶法制备具有磁致伸缩性能的钴铁氧体。探讨了前驱体的煅烧温度和煅烧时间对钴铁氧体的晶型结构、晶粒尺寸、形貌以及磁致伸缩性能的影响。通过TG技术辅助确定适宜的前驱体煅烧温度范围;利用XRD表征钴铁氧体晶型结构;使用磁致伸缩性能测量仪测试材料的磁致伸缩性能。研究表明,前驱体适宜的煅烧条件为煅烧温度800℃,煅烧时间3h;适宜条件下所得产品的密度比为82%,其最大磁致伸缩参数为-1.012×10-4。Cobalt ferrites magnetostrictive materials were synthesized by sol-gel method using spent Li-ion batteries as raw materials.Has discussed the effect for crystal structure,grain size,morphology and magnetostriction of cobalt ferrite with the calcining temperature and calcining time of precursor.The proper calcining temperature of precursor were investigated by TG,their structures and grain size were represented using XRD and magnetostrictive measurement instrument were used to test magnetostriction.The research results show that the proper preparation condition was calcining under 800 ℃for 3h,the denfity(%)was 82% and the max magnetostriction was-1.012×10-4 at the proper condition.

关 键 词：废旧锂离子电池 溶胶G凝胶法 钴铁氧体 磁致伸缩 

分 类 号：TQ174.75[化学工程—陶瓷工业]