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3D Graphene Network Encapsulating Mesoporous ZnS Nanospheres as High‐Performance Anode Material in Sodium‐Ion Batteries
Author(s) -
Hu Liang,
Hu Xiang,
Lin Zhoubin,
Wen Zhenhai
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201800412
Subject(s) - mesoporous material , materials science , graphene , anode , chemical engineering , nanostructure , nanoparticle , hydrothermal circulation , oxide , nanotechnology , composite number , electrode , chemistry , composite material , metallurgy , organic chemistry , catalysis , engineering
Here, we reported the synthesis of a three‐dimensional (3D) interconnected network nanostructure of reduced graphene oxide (rGO), enwrapping mesoporous ZnS nanospheres (m‐ZnS NSs@rGO). The synthesis is implemented by a simple gelatin‐assisted hydrothermal reaction followed by self‐assembly between mesoporous ZnS NSs and rGO. As a result of the synergic effect of the special nanostructure of ZnS nanospheres and rGO enwrapping, the m‐ZnS NSs@rGO composite exhibits favorable features as anode material in sodium‐ion batteries. These features include good cycling stability (513 mAh g −1 at 0.1 A g −1 after 80 cycles) and good rate capability (320 mAh g −1 at 1 A g −1 ). The 3D conductive structure, in conjunction with the mesoporous ZnS nanoparticles, provide advantageous features to the hybrids to buffer volume expansion/contraction upon the sodiation/desodiation process and facilitate mass (ions and electron) transportation and electron transfer.