CaltechAUTHORS
  A Caltech Library Service

Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles

Popczun, Eric J. and Read, Carlos G. and Roske, Christopher W. and Lewis, Nathan S. and Schaak, Raymond E. (2014) Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles. Angewandte Chemie International Edition, 53 (21). pp. 5427-5430. ISSN 1433-7851. https://resolver.caltech.edu/CaltechAUTHORS:20140620-100535755

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140620-100535755

Abstract

Nanoparticles of cobalt phosphide, CoP, have been prepared and evaluated as electrocatalysts for the hydrogen evolution reaction (HER) under strongly acidic conditions (0.50 M H_2SO_4, pH 0.3). Uniform, multi-faceted CoP nanoparticles were synthesized by reacting Co nanoparticles with trioctylphosphine. Electrodes comprised of CoP nanoparticles on a Ti support (2 mg cm^(−2) mass loading) produced a cathodic current density of 20 mA cm^(−2) at an overpotential of −85 mV. The CoP/Ti electrodes were stable over 24 h of sustained hydrogen production in 0.50 M H_2SO_4. The activity was essentially unchanged after 400 cyclic voltammetric sweeps, suggesting long-term viability under operating conditions. CoP is therefore amongst the most active, acid-stable, earth-abundant HER electrocatalysts reported to date.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://onlinelibrary.wiley.com/doi/10.1002/anie.201402646/abstractPublisherArticle
http://dx.doi.org/10.1002/anie.201402646DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/anie.201402646/suppinfoRelated ItemSupporting Information
Additional Information:© 2014 Wiley-VCH Verlag GmbH & Co. Received: February 20, 2014; Published online: April 11, 2014. This work was supported by the National Science Foundation (NSF) Center for Chemical Innovation on Solar Fuels (CHE-1305124). C.W.R. thanks the NSF for a graduate research fellowship. Research was in part performed at the Beckman Institute Molecular Materials Research Center. TEM and BET data were acquired using facilities in the Materials Characterization Lab of the Penn State Materials Research Institute. E.J.P. and C.G.R. thank Trevor Clark, Ke Wang, and Lymaris Ortiz Rivera for assistance.
Group:CCI Solar Fuels
Funders:
Funding AgencyGrant Number
NSF Center for Chemical Innovation on Solar FuelsCHE-1305124
NSF Graduate Research FellowshipUNSPECIFIED
Subject Keywords: electrocatalysis; hydrogen evolution; metal phosphide; nanomaterials; water splitting
Issue or Number:21
Record Number:CaltechAUTHORS:20140620-100535755
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140620-100535755
Official Citation:Popczun, E. J., Read, C. G., Roske, C. W., Lewis, N. S. and Schaak, R. E. (2014), Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles. Angew. Chem. Int. Ed., 53: 5427–5430. doi: 10.1002/anie.201402646
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46395
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 Jun 2014 17:24
Last Modified:03 Oct 2019 06:43

Repository Staff Only: item control page