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Construction of hierarchical FeP/Ni2P hollow nanospindles for efficient oxygen evolution

Publication ,  Journal Article
Feng, Y; Xu, C; Hu, E; Xia, B; Ning, J; Zheng, C; Zhong, Y; Zhang, Z; Hu, Y
Published in: Journal of Materials Chemistry A
January 1, 2018

In this work, we demonstrate the design and construction of hierarchical FeP/Ni2P hybrid hollow nanospindles (HNSs) as an active and stable electrocatalyst for the oxygen evolution reaction (OER). Employing solid FeOOH NSs coated with a thin layer of SiO2 as the template and Ni(NO3)2·6H2O as the reagent, 2D nickel silicate (Ni3Si4O10(OH)2·5H2O) nanosheets were grown on the surface of the FeOOH spindles through a facile solvothermal method to produce hierarchical FeOOH@Ni3Si4O10(OH)2·5H2O hybrid NSs. Following a subsequent phosphorization treatment, the as-prepared solid composite NSs were successfully converted into FeP/Ni2P HNSs. The SiO2 nanocoating was found to play a crucial role in this synthesis, and served not only as a reagent for the solvothermal reaction, but also as a nanoreactor for preserving the template morphology after the phosphorization treatment. Benefiting from the unique hollow and hierarchical nanoscaled hybrid structure, the FeP/Ni2P HNS electrocatalyst displays superior electrocatalytic activity for the OER to FexP, Ni2P and the physical mixture of FexP and Ni2P samples, achieving an overpotential of 234 mV at a current density of 10 mA cm-2 in 1 M KOH and a relatively low Tafel slope of 56 mV dec-1.

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Published In

Journal of Materials Chemistry A

DOI

EISSN

2050-7496

ISSN

2050-7488

Publication Date

January 1, 2018

Volume

6

Issue

29

Start / End Page

14103 / 14111

Related Subject Headings

  • 4016 Materials engineering
  • 4004 Chemical engineering
  • 3403 Macromolecular and materials chemistry
  • 0915 Interdisciplinary Engineering
  • 0912 Materials Engineering
  • 0303 Macromolecular and Materials Chemistry
 

Citation

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Feng, Y., Xu, C., Hu, E., Xia, B., Ning, J., Zheng, C., … Hu, Y. (2018). Construction of hierarchical FeP/Ni2P hollow nanospindles for efficient oxygen evolution. Journal of Materials Chemistry A, 6(29), 14103–14111. https://doi.org/10.1039/c8ta03933j
Feng, Y., C. Xu, E. Hu, B. Xia, J. Ning, C. Zheng, Y. Zhong, Z. Zhang, and Y. Hu. “Construction of hierarchical FeP/Ni2P hollow nanospindles for efficient oxygen evolution.” Journal of Materials Chemistry A 6, no. 29 (January 1, 2018): 14103–11. https://doi.org/10.1039/c8ta03933j.
Feng Y, Xu C, Hu E, Xia B, Ning J, Zheng C, et al. Construction of hierarchical FeP/Ni2P hollow nanospindles for efficient oxygen evolution. Journal of Materials Chemistry A. 2018 Jan 1;6(29):14103–11.
Feng, Y., et al. “Construction of hierarchical FeP/Ni2P hollow nanospindles for efficient oxygen evolution.” Journal of Materials Chemistry A, vol. 6, no. 29, Jan. 2018, pp. 14103–11. Scopus, doi:10.1039/c8ta03933j.
Feng Y, Xu C, Hu E, Xia B, Ning J, Zheng C, Zhong Y, Zhang Z, Hu Y. Construction of hierarchical FeP/Ni2P hollow nanospindles for efficient oxygen evolution. Journal of Materials Chemistry A. 2018 Jan 1;6(29):14103–14111.
Journal cover image

Published In

Journal of Materials Chemistry A

DOI

EISSN

2050-7496

ISSN

2050-7488

Publication Date

January 1, 2018

Volume

6

Issue

29

Start / End Page

14103 / 14111

Related Subject Headings

  • 4016 Materials engineering
  • 4004 Chemical engineering
  • 3403 Macromolecular and materials chemistry
  • 0915 Interdisciplinary Engineering
  • 0912 Materials Engineering
  • 0303 Macromolecular and Materials Chemistry