Premium
Synthesis of MoS 2 and Graphene Composites as the Anode Materials for Li–Ion Batteries
Author(s) -
Wang Juan,
Tian Jianhua,
Wang Xiaxia,
Qin Zhenwu,
Shan Zhongqiang
Publication year - 2018
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800011
Subject(s) - ethylenediamine , materials science , graphene , anode , electrochemistry , hydrothermal circulation , lithium (medication) , composite material , microstructure , electrode , hydrothermal synthesis , chemical engineering , doping , nanotechnology , inorganic chemistry , chemistry , medicine , endocrinology , engineering , optoelectronics
The MoS 2 and N‐doped graphene (MoS 2 /NG) composites are fabricated by an ethylenediamine‐assisted hydrothermal method for the anode materials of lithium‐ion batteries. The effects of hydrothermal systems with different amount ethylenediamine on the morphology of the MoS 2 in the prepared composites are investigated. The microstructure and morphology of the as‐obtained composites are characterized by SEM, TEM and XRD methods. The analytical result reveals that the ultrathin few‐layered MoS 2 nanosheets are tightly anchored on the graphene in the MoS 2 /NG composites. Given the different nanostructures of the as‐obtained composites, the possible formation mechanism is discussed and the electrochemical properties are studied. The MoS 2 /NG composites prepared with optimized amount of ethylenediamine modifier exhibit improved electrochemical performances, i. e. the enhanced cycling stability with reversible capacity of 816.6 mA h g −1 at 200 mA g −1 after 120 cycles and remarkable high‐rate capacity of 683.8 mA h g −1 at 2000 mA g −1 . Therefore, the MoS 2 /graphene composites have great potential being an electrode material for lithium‐ion batteries (LIBs).