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Synthesis of FeS Nanoparticles Embedded in MoS 2 /C Nanosheets as High‐Performance Anode Material for Lithium‐Ion Batteries
Author(s) -
Wang Hongqiang,
Ji Cheng,
Zhang Xiaohui,
Sun Yanna,
Wang Yi,
Pan Qichang,
Li Qingyu
Publication year - 2019
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.201801132
Subject(s) - anode , materials science , lithium (medication) , nanoparticle , composite number , electrolyte , chemical engineering , ion , nanotechnology , composite material , electrode , chemistry , organic chemistry , medicine , engineering , endocrinology
A composite of FeS nanoparticles embedded in MoS 2 /C nanosheets is prepared via a facile and scalable method using NaCl as a hard template. In the multichip structure, FeS nanoparticles are encapsulated in MoS 2 /C nanosheets. The carbon sheet prevents direct contact of FeS with the electrolyte and buffers volume expansion of FeS during the lithiation/delithiation process. The doping of MoS 2 is of benefit to enhance the mechanical behavior of the prepared composite and plays a synergistic effect with FeS. As an anode active material tested in lithium‐ion batteries, the composite displays an excellent rate performance with a specific discharge capacity of 967.3 and 558.9 mAh g −1 at 0.2 and 5 A g −1 , respectively. It delivers a specific capacity of 1008.3 mAh g −1 at 0.2 A g −1 after 100 cycles and 650.8 mAh g −1 at 1 A g −1 after 300 cycles.