CAJ | 학술논문

采用均相沉淀法制备了ZnFe2 O4前驱体，探索了烧结温度对ZnFe2 O4结构和电化学性能的影响。用X射线衍射（XRD）和场发射扫描电子显微镜（FESEM）表征了材料的微观结构和形貌；采用循环伏安（CV）、电化学交流阻抗谱（EIS）和充放电测试了ZnFe2 O4作为锂离子电池负极材料的储锂性能。结果表明：随着烧结温度的升高，样品粒径增大；当烧结温度达到900℃时可以得到纯相尖晶石型ZnFe2 O4，其中在900℃下烧结的ZnFe2 O4样品具有最高的嵌锂活性、最好的电化学反应可逆性、最低的电化学反应阻抗和优良的倍率性能。
채용균상침정법제비료ZnFe2 O4전구체，탐색료소결온도대ZnFe2 O4결구화전화학성능적영향。용X사선연사（XRD）화장발사소묘전자현미경（FESEM）표정료재료적미관결구화형모；채용순배복안（CV）、전화학교류조항보（EIS）화충방전측시료ZnFe2 O4작위리리자전지부겁재료적저리성능。결과표명：수착소결온도적승고，양품립경증대；당소결온도체도900℃시가이득도순상첨정석형ZnFe2 O4，기중재900℃하소결적ZnFe2 O4양품구유최고적감리활성、최호적전화학반응가역성、최저적전화학반응조항화우량적배솔성능。
ZnFe2 O4 precursor is prepared by homogeneous precipitation method and the effect of sintering tem-perature on the microstructure and electrochemical performances of ZnFe2 O4 is studied.The microstructure and morphology of the materials are analyzed by X-ray diffraction (XRD)and Field Emission Scanning Electron Mi-croscopy (FESEM).The lithium storage performance of ZnFe2 O4 samples used as anode material for lithium ion battery is characterized by cyclic voltammetry (CV ),electrochemical impedance spectroscopy (EIS ),and charge-discharge tests.The results indicate that the particles size of samples increases with increasing sintering temperature and pure spinel structural ZnFe2 O4 can be obtained when sintering temperature is up to 900 ℃.In particular,the ZnFe2 O4 sample sintered at 900 ℃ has the highest lithium intercalation activity,best electro-chemical reaction reversibility,lowest electrochemical reaction resistance,and excellent rate performance.