期刊
JOURNAL OF POWER SOURCES
卷 414, 期 -, 页码 540-546出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2019.01.036
关键词
2D/2D heterostructure; MXenes; Nickel molybdate; Energy storage devices
资金
- Natural Science Foundation of China [51472122, 51772152]
- Fundamental Research Funds for the Central Universities [NJ20160030, 30915011201]
- PAPD of Jiangsu
Nickel molybdate is emerged as a promising electrode material in supercapacitors for its rich redox chemistry. However, its limited electrical and ionic conductivities keep it from achieving its full capacitance potential. Here, a facile pathway is reported to synthesize NiMoO4/Ti3C2Tx nanosheets with interconnected porous construction, which may promote the electrolyte ion diffusion during reversible insertion/deinsertion processes, further improve its capacity. The fabricated NiMoO4/Ti3C2Tx electrode exhibits a high specific capacity of 545.5 C g(-1) (1364 F g(-1)) at a current density of 0.5 A g(-1) alongside with attractive cycling stability, contributed to the strong synergistic effects between NiMoO4 and Ti3C2Tx. Furthermore, an asymmetric supercapacitor is fabricated by coupling NiMoO4/Ti3C2Tx positive electrode with reduced graphene oxide hydrogel negative electrode, which demonstrates a broad potential window of 1.6 V, and an energy density of 33.76 Wh kg(-1).
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