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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
Zhao, Ruisheng
Ai, Wei
Chen, Bo
Du, Hongfang
Wu, Lishu
Zhang, Hua
Huang, Wei
Yu, Ting
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.
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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