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Three‐Dimensional Multilayer Assemblies of MoS 2 /Reduced Graphene Oxide for High‐Performance Lithium Ion Batteries
Author(s) -
Liu Geng,
Feng Yiyu,
Li Yu,
Qin Mengmeng,
An Haoran,
Hu Wenping,
Feng Wei
Publication year - 2015
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201400207
Subject(s) - graphene , materials science , molybdenum disulfide , lithium (medication) , oxide , nanocomposite , anode , chemical engineering , nanotechnology , ion , transmission electron microscopy , composite material , electrode , chemistry , organic chemistry , medicine , endocrinology , metallurgy , engineering
Three‐dimensional (3D) multilayer molybdenum disulfide (MoS 2 )/reduced graphene oxide (RGO) nanocomposites are prepared by a solution‐processed self‐assembly based on the interaction using different sizes of MoS 2 and GO nanosheets followed by in situ chemical reduction. 3D multilayer assemblies with MoS 2 wrapped by large RGO nanosheets and good interface are observed by transmission electron microscopy. The interaction of Na + ions with oxygen‐containing groups of GO is also investigated. The measurement of lithium ion batteries (LIBs) shows that MoS 2 /RGO anode nanocomposite with a weight ratio of MoS 2 to GO of 3:1 exhibits an excellent rate performance of 750 mAh g −1 at 3 A g −1 outperforming many previous studies and a high reversible capacity up to ≈1180 mAh g −1 after 80 cycles at 100 mA g −1 . Good rate performance and high capacity of MoS 2 /RGO with 3D unique layered‐structures are attributed to the combined effects of continuous conductive networks of RGO, good interface facilitating charge transfer, and strong RGO sheets preventing the volume expansion. Results indicate that 3D multilayer MoS 2 /RGO prepared by a facile solution‐processed assembly can be developed to be an excellent nanoarchitecture for high‐performance LIBs.