基于微乳液法的多孔棒状结构MnFe2O4制备及电化学性能  

Preparation and electrochemical performance of MnFe2O4 with porous rod structure based on micro-emulsion synthesis

作　　者：丛龙达 邢雅兰[1] 靳宝贻 吴昊[1] 赵光金 张世超[1] CONG Longda;XING Yalan;JIN Baoyi;WU Hao;ZHAO Guangjin;ZHANG Shichao(School of Materials Science and Engineering,Beihang University,Beijing 100191,China;State Grid Henan Electric Power Research Institute,Zhengzhou 450000,Henan,China)

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191 [2]国网河南省电力公司,河南郑州450000

出　　处：《储能科学与技术》2019年第6期1132-1136,共5页Energy Storage Science and Technology

基　　金：国家自然科学基金项目（51774017）;国家电网公司科技项目（52170217000L）;装备预研基金重点项目（6140721020103）

摘　　要：本工作以硫酸亚铁和乙酸锰为原料,在表面活性剂双(2-乙基己基)琥珀酸酯磺酸钠气溶胶作用下,通过微乳液法合成了前体,锻烧后得到了具有多孔结构的一维棒状MnFe2O4材料.棒直径约200 nm、长度2~3 μm,含有大量孔径在13~35 nm的介孔结构.将制备的MnFe2O4作为锂离子电池负极材料,进行电化学性能测试,在100 mA/g的电流密度下200圈循环仍能保持630 mA·h/g以上的容量,同时也具有良好的倍率性能.研究显示多孔棒状MnFe2O4是一种具有应用前景的锂离子电池负极材料.MnFe2O4 with one dimensional porous rod structure was synthesized based on micro-emulsion method and calcination with ferrous sulfate and manganese acetate as raw materials,bis(2-ethylhexyl)sulfosuccinate sodium salt as surfactant.The prepared MnFe2O4 rods show a diameter of about 200 nm and length of 2~3 m with abundant mesopores of 13~35 nm.When tested as anode material of lithium ion batteries,the prepared MnFe2O4 exhibited a capacity over 630 mA h g-1 after 200 cycles at a current density 100 mA·g^-1.It also shows good rate capability.The research shows that the MnFe2O4 with porous rod structure could be a good candidate for anode materials of lithium ion batteries.

关 键 词：锂离子电池 微乳液法 多孔电极 一维结构 

分 类 号：TM911[电气工程—电力电子与电力传动]