以废旧锂离子电池为原料制备CoZn_(x)Zr_(x)Fe_(2-x)O_(4)磁致伸缩材料  

Synthesis of CoZn_(x)Zr_(x)Fe_(2-x)O_(4) magnetostrictive nanomaterials by using spent Li-ion batteries as raw materials

作　　者：敦长伟[1] 席国喜[1] 衡晓莹 刘玉民[1] 陈野 DUN Changwei;XI Guoxi;HENG Xiaoying;LIU Yumin;CHEN Ye(School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China;School of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, China)

机构地区：[1]河南师范大学化学化工学院,河南新乡453007 [2]河南师范大学材料科学与工程学院,河南新乡453007

出　　处：《功能材料》2021年第2期2118-2123,共6页Journal of Functional Materials

基　　金：河南师范大学博士启动经费项目(5101039170198);国家自然科学基金资助项目(51174083)。

摘　　要：以废旧锂离子电池为原料,采用溶胶-凝胶自蔓延燃烧的方法制备出锌锆离子共取代的钴铁氧体,并对所制备样品的结构、形貌、磁性能和磁致伸缩性能进行探究。结果表明,锌锆离子共取代的钴铁氧体具有尖晶石结构,形貌与纯钴铁氧体比较发生了变化。随着锌锆离子取代量的增加,样品的饱和磁化强度、最大磁致伸缩系数和最大应变导数整体呈现先增加后减小的趋势。在取代量为x=0.050时,样品在较低的磁场强度下取得的饱和磁化强度和最大应变导数分别是87.56 Am^(2)/kg和-1.81×10^(-9) A^(-1)m,这有利于铁氧体磁致伸缩材料在压力传感器和制动器方面的应用。Cobalt ferrite substituted with Zn^(2+)and Zr^(4+)are prepared by sol-gel auto-combustion method using spent Li-ion batteries as raw materials.The crystal structure,morphology,magnetic properties and magnetostrictive properties are explored.The results show that the substituted samples are spinel structure and the morphology of the samples changes compared with cobalt ferrite.With the increase of zinc-zirconium substituting amount,the saturation magnetization,maximum magnetostriction coefficient and maximum strain derivative of the samples firstly increase and then decrease.At the substituting amount x=0.050,the saturation magnetization and maximum strain derivative of the sample at a lower magnetic field strength are 87.56 Am^(2)/kg and-1.81×10^(-9) A^(-1)m,respectively.It is beneficial to the application of ferrite magnetostrictive materials on the pressure sensors and actuators.

关 键 词：废旧锂离子电池 钴铁氧体 溶胶-凝胶自蔓延燃烧 磁致伸缩性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]