Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 13, 2019
Previous Article Next Article

Predictive fabrication of Ni phosphide embedded in carbon nanofibers as active and stable electrocatalysts

Author affiliations

Abstract

Although numerous first-principle studies have suggested candidate materials that may be used as enhanced electrocatalysts, the synthesis of such materials is quite another challenge. Furthermore, it has been still necessary to combine the active material with a supporting matrix in an optimized structure for stability and surface accessibility. Herein, we report a predictive fabrication method for the system where NiP2 nanoparticles has beenevenly embedded in carbon nanofibers (CNFs), which is expected to be superior by theoretical calculation but not successfully made so far. Through thermodynamic considerations on the inter-component reactions against processing variables, such as temperature, partial pressure of oxygen and phosphorus (pO2, pP4), a suitable two-step synthesis route consisting of successive pO2-controlled carbonization and pP4-controlled phosphidation was deduced. The obtained NiP2/CNFs had the desired electrocatalytic properties as well as physical features, including maximized surface area and well-combined structure. Consequently, the catalysts had overpotentials of only 71 mV at 10 mA cm−2 and long-term stability of over 100 hours with less than 10% degradation under the operating conditions.

Graphical abstract: Predictive fabrication of Ni phosphide embedded in carbon nanofibers as active and stable electrocatalysts

Back to tab navigation

Supplementary files

Article information


Submitted
14 Jan 2019
Accepted
21 Feb 2019
First published
22 Feb 2019

J. Mater. Chem. A, 2019,7, 7451-7458
Article type
Paper

Predictive fabrication of Ni phosphide embedded in carbon nanofibers as active and stable electrocatalysts

J. Kim, H. Park, W. Joo, D. Nam, S. Lee, H. G. Kim, I. Ahn, H. Kang, G. Lee, I. Jung, M. Kim, G. Lee and Y. Joo, J. Mater. Chem. A, 2019, 7, 7451
DOI: 10.1039/C9TA00455F

Social activity

Search articles by author

Spotlight

Advertisements