Hydrogen bond-assisted synthesis of MoS2/reduced graphene oxide composite with excellent electrochemical performances for lithium and sodium storage.

Author(s) Qin, W.; Li, Y.; Teng, Y.; Qin, T.
Journal J Colloid Interface Sci
Date Published 2018 Feb 15

MoS2/reduced graphene oxide composites (MoS2/rGO) were successfully prepared by a designed tris(hydroxymethyl)methyl aminomethane (named THAM)-assisted hydrothermal method, which involves the modification of THAM on the surfaces of graphene oxide via hydrogen bonds and then the adsorption of MoO42- on the decorated surfaces due to the electrostatic attraction. The three-dimensional framework of interconnected rGO nanosheets provides good electronic conductivity and facile strain release during the electrochemical reaction, thus enhancing the overall performance of the MoS2-based electrode. Herein, the composite delivers high specific capacity, excellent cycling stability and rate performance for lithium- and sodium- ions batteries (LIBs and SIBs). The MoS2/rGO anode exhibits capacities of 880 mAh g-1 at 1 A g-1 after 200 cycles and 396 mAh g-1 even at 2 A g-1 after 2000 cycles for LIBs. As to SIBs, the reversible capacities of 485 mAh g-1 and 339 mAh g-1 can be retained at 0.1 A g-1 after 60 cycles and 0.5 A g-1 after 300 cycles, respectively. Our results demonstrate that the MoS2/rGO anode is one of the attractive anodes for LIBs and SIBs. Furthermore, the facile method can be extended to biosensing, catalytic, and biomedical applications.

DOI 10.1016/j.jcis.2017.10.106
ISSN 1095-7103
Citation J Colloid Interface Sci. 2018;512:826833.

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