Analogous Three-dimensional MoS2/Graphene Composites for Reversible Li Storage

作者：Liang Pei^*; Xing Song; Shu Hai-Bo; Zhang Lin; Hu Chen-Li

来源：Journal of Inorganic Materials, 2016, 31(6): 575-580.

DOI：10.15541/jim20150409

• cationic surfactants
• MoS2/GF composites
• electrochemical performances
• lithium ion battery

MoS2/GF composites were synthesized by hydrothermal method using graphene oxide (GO), sodium molybdate and thiourea as raw materials with assistance of different cationic surfactants (C(14)TAB, C(16)TAB, C(18)TAB). The investigation of as-prepared samples by X-ray diffraction and scanning electron microscopy demonstrate that the composites have presented different morphologies and microstructures which may be resulted from the cationic surfactants. Electrochemical performances for reversible Li+ storage of the composites reveal that the capacities, cycling stability and rate capability are influenced by different morphologies and microstructures. Comparison to C(16)TAB and C(18)TAB assistance, the composite synthesized with C(14)TAB assistance delivers a high first discharge capacity of 955 mAh/g and reversible capacity of 751 mAh/g after 50 cycles, shoowing excellent rate capability. The improvement in the electrochemical performances of the composites synthesized with C(14)TAB assistance is attributed to its special particle-on-sheet structure and synergistic interactions between graphene and MoS2.

• 出版日期2016-6-20
• 单位中国计量大学