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- Title
Difunctional hierarchical CoxP QDs-MoS2@Ni3S2/NF nanostructure as advanced electrocatalyst for water electrolysis.
- Authors
Fu, Yueyue; Pan, Jiaqi; Xiao, Guangsheng; Niu, Jingjing; Fu, Wendi; Wang, Jingjing; Zheng, Yingying; Li, Chaorong
- Abstract
A CoxP QDs-MoS2 nanosheets@Ni3S2 nanoarrays/NF with electrocatalytic overall water splitting is fabricated via a simple hydrothermal-electrodeposition method. There, the MoS2@Ni3S2/NF is prepared by a hydrothermal method on the surface of NF, and subsequently the CoxP QDs are deposited by an electrodeposition method on the surface of MoS2 nanosheets. As demonstrated, the as-prepared CoxP QDs-MoS2@Ni3S2/NF presents low overpotentials of 54 mV(HER) at 10 mA cm−2 and 207 mV(OER) at 100 mA cm−2 in 1.0 M KOH, and exhibits a decent overall water splitting performance, including the overpotential of 1.39 V(vs RHE) at 10 mA cm−2, which can be mainly ascribed to the hierarchical nanostructure can increase MoS2 nanosheets and CoxP QDs efficiently for increasing the HER/OER active sites. Additionally, the extra HER active sites of edge S atoms from MoS2 nanosheets, the extra OER active sites induce by the presence of Ni3+/Ni2+ and Co3+/Co2+ mixed state, and low overpotential of Ni3S2, MoS2 and CoxP QDs are also important reasons.
- Subjects
WATER electrolysis; NANOSTRUCTURED materials; OVERPOTENTIAL; ELECTROPLATING; OXYGEN evolution reactions; HYDROGEN evolution reactions
- Publication
Journal of Materials Science: Materials in Electronics, 2021, Vol 32, Issue 12, p16126
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-06161-5