文献类型：期刊文献

英文题名：Synthesis of cobalt ferrite with enhanced magnetostriction properties by the sol-gel-hydrothermal route using spent Li-ion battery

作者：Yao, Lu[1,2];Xi, Yuebin[1];Xi, Guoxi[1];Feng, Yong[1]

第一作者：Yao, Lu

通讯作者：Xi, GX[1]

机构：[1]Henan Normal Univ, Coll Environm, Key Lab Yellow River & Huai River Water Environm, Minist Educ, Xinxiang 453007, Peoples R China;[2]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China

第一机构：Henan Normal Univ, Coll Environm, Key Lab Yellow River & Huai River Water Environm, Minist Educ, Xinxiang 453007, Peoples R China

通讯机构：[1]corresponding author), Henan Normal Univ, Coll Environm, Key Lab Yellow River & Huai River Water Environm, Minist Educ, Xinxiang 453007, Peoples R China.

年份：2016

卷号：680

起止页码：73-79

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20161802321114);Scopus(收录号：2-s2.0-84964433776);WOS:【SCI-EXPANDED(收录号:WOS:000376109000012)】；

基金：The authors are thankful to financial supports obtained from the National Natural Science Foundation of China (Grant No. 51174083), (Grant No. 51304064) and the Doctoral Fund of the Ministry of Education of China (20114104110004).

语种：英文

外文关键词：Spent Li-ion battery; Sol-gel-hydrothermal; Cobalt ferrite; Magnetic property; Magnetostriction

摘要：The combination of a sol-gel method and a hydrothermal method was successfully used for synthesizing the nano-crystalline cobalt ferrite powders with a spinel structure using spent Li-ion batteries as the raw materials. The phase composition, microstructure, magnetic properties and magnetostriction coefficient of cobalt ferrite were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), magnetometer and magnetostrictive measurement instrument. The microstructure of the products exhibited hedgehog-like microspheres with particle size of approximately 5 mu m. The different crystalline sizes and the microstructure of cobalt ferrites precursor were controlled by varying the hydrothermal time, which significantly affected the super-exchange and the deflection direction of the magnetic domain, and led to the change of the magnetic properties of sintered cylindrical samples. The saturation magnetization and maximum magnetostriction coefficient were 81.7 emu/g and -158.5 ppm, respectively, which was larger than that of products prepared by the sol-gel sintered method alone. (C) 2016 Elsevier B.V. All rights reserved.