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Three‐Dimensional MoS 2 Hierarchical Nanoarchitectures Anchored into a Carbon Layer as Graphene Analogues with Improved Lithium Ion Storage Performance
Author(s) -
Zhao Xinyu,
Hu Changwen,
Cao Minhua
Publication year - 2013
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201300771
Subject(s) - graphene , materials science , anode , lithium (medication) , electrochemistry , nanotechnology , carbon fibers , electrode , carbonization , nanomaterials , hydrothermal carbonization , hydrothermal circulation , current density , amorphous solid , intercalation (chemistry) , chemical engineering , composite number , inorganic chemistry , composite material , scanning electron microscope , chemistry , endocrinology , medicine , physics , engineering , quantum mechanics , organic chemistry
Much attention has recently been focused on the synthesis and application of graphene analogues of layered nanomaterials owing to their better electrochemical performance than the bulk counterparts. We synthesized graphene analogue of 3D MoS 2 hierarchical nanoarchitectures through a facile hydrothermal route. The graphene‐like MoS 2 nanosheets are uniformly dispersed in an amorphous carbon matrix produced in situ by hydrothermal carbonization. The interlaminar distance between the MoS 2 nanosheets is about 1.38 nm, which is far larger than that of bulk MoS 2 (0.62 nm). Such a layered architecture is especially beneficial for the intercalation and deintercalation of Li + . When tested as a lithium‐storage anode material, the graphene‐like MoS 2 hierarchical nanoarchitectures exhibit high specific capacity, superior rate capability, and enhanced cycling performance. This material shows a high reversible capacity of 813.5 mAh g −1 at a current density of 1000 mA g −1 after 100 cycles and a specific capacity as high as 600 mAh g −1 could be retained even at a current density of 4000 mA g −1 . The results further demonstrate that constructing 3D graphene‐like hierarchical nanoarchitectures can effectively improve the electrochemical performance of electrode materials.