Hydrothermal synthesis of layered molybdenum sulfide/N-doped graphene hybrid with enhanced supercapacitor performance

被引:197
作者
Xie, Bingqiao [1 ]
Chen, Ying [1 ]
Yu, Mengying [1 ]
Sun, Tu [1 ]
Lu, Luhua [1 ]
Xie, Ting [3 ]
Zhang, Yong [2 ,3 ]
Wu, Yucheng [2 ,3 ]
机构
[1] China Univ Geosci, Engn Res Ctr Nanogeomat, Minist Educ, 388 Lumo RD, Wuhan 430074, Peoples R China
[2] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
[3] Key Lab Adv Funct Mat & Devices Anhui Prov, Hefei 230009, Peoples R China
基金
中国国家自然科学基金;
关键词
MOS2; NANOSHEETS; COMPOSITES; STORAGE; GROWTH; OXIDE;
D O I
10.1016/j.carbon.2015.11.077
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Graphene-based composites have been deemed as promising materials in renewable energy-storage applications. Herein, we report a hybrid architecture consisting of layered molybdenum sulfide nanosheets/N-doped graphene (MoS2/NG) synthesized by one-pot hydrothermal method. By adjusting precursor ratios, flower-like MoS2/NG hybrid with nitrogen content of 3.5 at.% on the graphene layers can be obtained. Electrochemical characterizations indicate that the maximum specific capacitance of the MoS2/NG electrodes reaches up to 245F/g at 0.25A/g (and 146F/g at 20A/g). In addition, the electrode exhibits superior cyclic stability with 91.3% capacitance retention after 1000 cycles at 2A/g. The outstanding performance of the MoS2/NG hybrid benefits from the synergistic effect between the layered MoS2 and N-doped graphene. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:35 / 42
页数:8
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