Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 735, Issue -, Pages 409-416Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.11.041
Keywords
Ni-Co sulfide; Ni-Co alloy; Reduced graphene oxide; Controlled sulfidation; Supercapacitors
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Funding
- Ministry of Science and Technology (Taiwan) [MOST-102-2221-E-006-221-MY3, MOST 105-2221-E-006-234]
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In this study, the partially sulfidized Ni-Co/reduced graphene oxide (NCS/NC/RGO) hybrid was developed as a supercapacitor electrode material. Because Ni-Co sulfide (NCS) possessed good pseudocapacitor property and non-sulfidized Ni-Co (NC) alloy had high conductivity, we attempted to optimize the electrochemical performance of NCS/NC/RGO hybrid by controlling the sulfidation of NC/RGO hybrid. RGO was incorporated as a substrate to help the dispersion of NCS/NC nanoparticles and contribute some capacitance. It was demonstrated that an appropriate sulfidation of NC/RGO hybrid could lead to the highest capacitance effectively. Moreover, the optimal NCS/NC/RGO hybrid also exhibited good stability. The result revealed that the strategy to optimize the capacitor performance of NCS/NC/RGO hybrid via the controlled sulfidation of NC/RGO hybrid was indeed effective. (C) 2017 Elsevier B.V. All rights reserved.
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