Premium
Sn‐MoS 2 ‐C@C Microspheres as a Sodium‐Ion Battery Anode Material with High Capacity and Long Cycle Life
Author(s) -
Zheng Fenghua,
Pan Qichang,
Yang Chenghao,
Xiong Xunhui,
Ou Xing,
Hu Renzong,
Chen Yu,
Liu Meilin
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201605005
Subject(s) - anode , materials science , sodium ion battery , battery (electricity) , microsphere , composite number , sodium , energy storage , nanoparticle , chemical engineering , ion , carbon fibers , nanotechnology , composite material , metallurgy , electrode , chemistry , faraday efficiency , engineering , power (physics) , physics , organic chemistry , quantum mechanics
Sodium ion batteries (SIBs) have been regarded as a prime candidate for large‐scale energy storage, and developing high performance anode materials is one of the main challenges for advanced SIBs. Novel structured Sn‐MoS 2 ‐C@C microspheres, in which Sn nanoparticles are evenly embedded in MoS 2 nanosheets and a thin carbon film is homogenously engineered over the microspheres, have been fabricated by the hydrothermal method. The Sn‐MoS 2 ‐C@C microspheres demonstrate an excellent Na‐storage performance as an anode of SIBs and deliver a high reversible charge capacity (580.3 mAh g −1 at 0.05 Ag −1 ) and rate capacity (580.3, 373, 326, 285.2, and 181.9 mAh g −1 at 0.05, 0.5, 1, 2, and 5 Ag −1 , respectively). A high charge specific capacity of 245 mAh g −1 can still be achieved after 2750 cycles at 2 Ag −1 , indicating an outstanding cycling performance. The high capacity and long‐term stability make Sn‐MoS 2 ‐C@C composite a very promising anode material for SIBs.