MoS_2多级纳米结构的合成及锂离子电池性能  

Synthesis of MoS_2 Hierarchical Nanostructure and Its Performance for Lithium-ion Battery

作　　者：冯慧杰[1] 郑文君[1] 

机构地区：[1]南开大学化学学院先进能源材料化学教育部重点实验室天津化学化工协同创新中心,天津300071

出　　处：《高等学校化学学报》2017年第7期1134-1139,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21371101;51672135;21421001);高等学校学科创新引智计划项目(批准号:B12015)资助~~

摘　　要：采用水热法,在200℃,S/Mo摩尔比为4.3∶1的条件下,水热反应24 h,合成出由MoS_2纳米片堆积而成的花墙状多级纳米结构.利用X射线粉末衍射仪(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)和X射线光电子能谱仪(XPS)等对产物物相和形貌进行了表征.结果表明,MoS_2纳米片厚度约为10 nm,花墙状多级纳米结构可达十至数十微米,具有较好的均匀性.MoS_2多级纳米结构作为锂离子电池负极材料,在高电流密度下表现出良好的循环稳定性.MoS2 hierarchical nanostructure was synthesized by hydrothermal method under the molar ratio of S/Mo = 4. 3 ： 1 at 200℃ for 24 h. The synthesized product was characterized by X-ray powder diffractometer （ XRD）, field emission scanning electron microscope （ SEM ）, transmission electron microscope （TEM） and X-ray photoelectron spectrometer（XPS）. The results show that the product presents uniform tracery-wall-like hierarchical nanostructure, which is assembled by some nanoplates with the thickness of ca. 10 nm, and its width can reach several micrometers to tens of micrometers. As lithium-ion battery anode material, the MoS2 hierarchical nanostructure exhibit superior excellent cycling stability at high current density.

关 键 词：二硫化钼 多级纳米结构 水热合成 锂离子电池 

分 类 号：O614.61[理学—无机化学] O646[理学—化学]