Synthesis and x-ray characterization of cobalt phosphide (Co₂P) nanorods for the oxygen reduction reaction

Doan-Nguyen, Vicky V.T.; Su, Dong; Zhang, Sen; Trigg, Edward B.; Agarwal, Rahul; Li, Jing; Winey, Karen I.; Murray, Christopher B.

doi:10.1021/acsnano.5b02191

Synthesis and x-ray characterization of cobalt phosphide (Co₂P) nanorods for the oxygen reduction reaction

Journal Article · Tue Jul 14 00:00:00 EDT 2015 · ACS Nano

DOI:https://doi.org/10.1021/acsnano.5b02191· OSTI ID:1213384

Doan-Nguyen, Vicky V.T. ^[1]; Su, Dong ^[2]; Zhang, Sen ^[1]; Trigg, Edward B. ^[1]; Agarwal, Rahul ^[1]; Li, Jing ^[2]; Winey, Karen I. ^[1]; Murray, Christopher B. ^[1]

Univ. of Pennsylvania, Philadelphia, PA (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Low temperature fuel cells are clean, effective alternative fuel conversion technology. Oxygen reduction reaction (ORR) at the fuel cell cathode has required Pt as the electrocatalyst for high activity and selectivity of the four-electron reaction pathway. Targeting a less expensive, earth abundant alternative, we have developed the synthesis of cobalt phosphide (Co₂P) nanorods for ORR. Characterization techniques that include total X-ray scattering and extended X-ray absorption fine structure revealed a deviation of the nanorods from bulk crystal structure with a contraction along the b orthorhombic lattice parameter. The carbon supported nanorods have comparable activity but are remarkably more stable than conventional Pt catalysts for the oxygen reduction reaction in alkaline environments.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI ID:: 1213384

Alternate ID(s):: OSTI ID: 1213710

Report Number(s):: BNL--108265-2015-JA; KC0403020

Journal Information:: ACS Nano, Journal Name: ACS Nano Journal Issue: 8 Vol. 9; ISSN 1936-0851

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Synthesis and x-ray characterization of cobalt phosphide (Co₂P) nanorods for the oxygen reduction reaction

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