TY - JOUR
T1 - Graphene-supported Ce - SnS 2 nanocomposite as anode material for lithium-ion batteries
AU - Wang, Qiufen
AU - Huang, Ying
AU - Miao, Juan
AU - Zhao, Yang
AU - Zhang, Wei
AU - Wang, Yan
PY - 2013/7
Y1 - 2013/7
N2 - A graphene-supported Ce-SnS2 (Ce-SnS2/graphene) nanocomposite has been synthesized via a hydrothermal route. Structure, morphology, and electrochemical properties of the composites were studied by means of XRD, SEM, TEM, Raman, XPS, TGA, and electrochemical measurements. The Ce-SnS2 crystal particles with a flower-like structure were distributed on the graphene sheets (GNS). The particle sizes of each petal are in the range 50-100 nm with clear lattice fringes. The atomic ratio of Sn, S, Ce, C, and O is estimated to be 1:2:0.05:3.11:0.64 and the content of Ce-SnS2 composite is 80 wt.% in the as-synthesized sample. The Ce-SnS2/graphene composite exhibits high initial discharge capacity (1638.3 mAh/g at 0.5 C), high capacity retention (707 mAh/g at 0.5 C after 50 cycles), and good rate capability due to the synergy effect between Ce-SnS 2 nanoparticles and graphene nanosheets. The superior performance is ascribed to the presence of graphene keeping the structure stable.
AB - A graphene-supported Ce-SnS2 (Ce-SnS2/graphene) nanocomposite has been synthesized via a hydrothermal route. Structure, morphology, and electrochemical properties of the composites were studied by means of XRD, SEM, TEM, Raman, XPS, TGA, and electrochemical measurements. The Ce-SnS2 crystal particles with a flower-like structure were distributed on the graphene sheets (GNS). The particle sizes of each petal are in the range 50-100 nm with clear lattice fringes. The atomic ratio of Sn, S, Ce, C, and O is estimated to be 1:2:0.05:3.11:0.64 and the content of Ce-SnS2 composite is 80 wt.% in the as-synthesized sample. The Ce-SnS2/graphene composite exhibits high initial discharge capacity (1638.3 mAh/g at 0.5 C), high capacity retention (707 mAh/g at 0.5 C after 50 cycles), and good rate capability due to the synergy effect between Ce-SnS 2 nanoparticles and graphene nanosheets. The superior performance is ascribed to the presence of graphene keeping the structure stable.
UR - http://www.scopus.com/inward/record.url?scp=84880257483&partnerID=8YFLogxK
U2 - 10.1111/jace.12302
DO - 10.1111/jace.12302
M3 - 文章
AN - SCOPUS:84880257483
SN - 0002-7820
VL - 96
SP - 2190
EP - 2196
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 7
ER -
