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|Title:||Controllable design of MoS2 nanosheets anchored on nitrogen-doped graphene : toward fast sodium storage by tunable pseudocapacitance||Authors:||Xu, Xin
|Keywords:||Science::Physics||Issue Date:||2018||Source:||Xu, X., Zhao, R., Ai, W., Chen, B., Du, H., Wu, L., . . . Yu, T. (2018). Controllable design of MoS2 nanosheets anchored on nitrogen-doped graphene : toward fast sodium storage by tunable pseudocapacitance. Advanced Materials, 30(27), 1800658-. doi:10.1002/adma.201800658||Journal:||Advanced Materials||Abstract:||Transition-metal disulfide with its layered structure is regarded as a kind of promising host material for sodium insertion, and intensely investigated for sodium-ion batteries. In this work, a simple solvothermal method to synthesize a series of MoS2 nanosheets@nitrogen-doped graphene composites is developed. This newly designed recipe of raw materials and solvents leads the success of tuning size, number of layers, and interplanar spacing of the as-prepared MoS2 nanosheets. Under cut-off voltage and based on an intercalation mechanism, the ultrasmall MoS2 nanosheets@nitrogen-doped graphene composite exhibits more preferable cycling and rate performance compared to few-/dozens-layered MoS2 nanosheets@nitrogen-doped graphene, as well as many other reported insertion-type anode materials. Last, detailed kinetics analysis and density functional theory calculation are also employed to explain the Na+ - storage behavior, thus proving the significance in surface-controlled pseudocapacitance contribution at the high rate. Furthermore, this work offers some meaningful preparation and investigation experiences for designing electrode materials for commercial sodium-ion batteries with favorable performance.||URI:||https://hdl.handle.net/10356/138980||ISSN:||0935-9648||DOI:||10.1002/adma.201800658||Rights:||© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced Materials and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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