High-activity, durable oxygen reduction electrocatalyst: Nanoscale composite of platinum-tantalum oxyphosphate on vulcan carbon

Yannick Garsany; Albert Epshteyn; Andrew P. Purdy; Karren L. More; Karen E. Swider-Lyons

doi:10.1021/jz100681g

High-activity, durable oxygen reduction electrocatalyst: Nanoscale composite of platinum-tantalum oxyphosphate on vulcan carbon

Yannick Garsany, Albert Epshteyn, Andrew P. Purdy, Karren L. More, Karen E. Swider-Lyons

Center for Nanophase Matls Sciences

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

A new oxygen reduction electrocatalyst for proton-exchange membrane fuel cells (PEMFCs) is synthesized by dispersing nanoscale Pt on a nanoscale tantalum oxyphosphate phase on a Vulcan carbon support, designated as Pt/[TaOPO ₄/VC]. Electrocatalytic activity is measured by the thin-film rotating disk electrode methodology in 0.1 M HClO₄ electrolyte. The Pt/[TaOPO₄/VC] electrocatalyst has a high mass-specific activity of 0.46 A mg^-1_Pt compared to 0.20 A mg^-1 _Pt for a Pt/Vulcan carbon standard and has met the 2015 DOE goal of 0.44 A mg^-1_Pt. This tantalum-containing electrocatalyst is twice as durable as the standard Pt/carbon in terms of its loss of Pt electrochemical surface area after aggressive electrochemical cycling.

Original language	English
Pages (from-to)	1977-1981
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	1
Issue number	13
DOIs	https://doi.org/10.1021/jz100681g
State	Published - Jul 1 2010

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/jz100681g

Cite this

@article{b021852539eb4c8ba2e1b3351c6107cc,

title = "High-activity, durable oxygen reduction electrocatalyst: Nanoscale composite of platinum-tantalum oxyphosphate on vulcan carbon",

abstract = "A new oxygen reduction electrocatalyst for proton-exchange membrane fuel cells (PEMFCs) is synthesized by dispersing nanoscale Pt on a nanoscale tantalum oxyphosphate phase on a Vulcan carbon support, designated as Pt/[TaOPO 4/VC]. Electrocatalytic activity is measured by the thin-film rotating disk electrode methodology in 0.1 M HClO4 electrolyte. The Pt/[TaOPO4/VC] electrocatalyst has a high mass-specific activity of 0.46 A mg-1Pt compared to 0.20 A mg-1 Pt for a Pt/Vulcan carbon standard and has met the 2015 DOE goal of 0.44 A mg-1Pt. This tantalum-containing electrocatalyst is twice as durable as the standard Pt/carbon in terms of its loss of Pt electrochemical surface area after aggressive electrochemical cycling.",

author = "Yannick Garsany and Albert Epshteyn and Purdy, {Andrew P.} and More, {Karren L.} and Swider-Lyons, {Karen E.}",

year = "2010",

month = jul,

day = "1",

doi = "10.1021/jz100681g",

language = "English",

volume = "1",

pages = "1977--1981",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

number = "13",

}

TY - JOUR

T1 - High-activity, durable oxygen reduction electrocatalyst

T2 - Nanoscale composite of platinum-tantalum oxyphosphate on vulcan carbon

AU - Garsany, Yannick

AU - Epshteyn, Albert

AU - Purdy, Andrew P.

AU - More, Karren L.

AU - Swider-Lyons, Karen E.

PY - 2010/7/1

Y1 - 2010/7/1

N2 - A new oxygen reduction electrocatalyst for proton-exchange membrane fuel cells (PEMFCs) is synthesized by dispersing nanoscale Pt on a nanoscale tantalum oxyphosphate phase on a Vulcan carbon support, designated as Pt/[TaOPO 4/VC]. Electrocatalytic activity is measured by the thin-film rotating disk electrode methodology in 0.1 M HClO4 electrolyte. The Pt/[TaOPO4/VC] electrocatalyst has a high mass-specific activity of 0.46 A mg-1Pt compared to 0.20 A mg-1 Pt for a Pt/Vulcan carbon standard and has met the 2015 DOE goal of 0.44 A mg-1Pt. This tantalum-containing electrocatalyst is twice as durable as the standard Pt/carbon in terms of its loss of Pt electrochemical surface area after aggressive electrochemical cycling.

AB - A new oxygen reduction electrocatalyst for proton-exchange membrane fuel cells (PEMFCs) is synthesized by dispersing nanoscale Pt on a nanoscale tantalum oxyphosphate phase on a Vulcan carbon support, designated as Pt/[TaOPO 4/VC]. Electrocatalytic activity is measured by the thin-film rotating disk electrode methodology in 0.1 M HClO4 electrolyte. The Pt/[TaOPO4/VC] electrocatalyst has a high mass-specific activity of 0.46 A mg-1Pt compared to 0.20 A mg-1 Pt for a Pt/Vulcan carbon standard and has met the 2015 DOE goal of 0.44 A mg-1Pt. This tantalum-containing electrocatalyst is twice as durable as the standard Pt/carbon in terms of its loss of Pt electrochemical surface area after aggressive electrochemical cycling.

UR - http://www.scopus.com/inward/record.url?scp=77954274500&partnerID=8YFLogxK

U2 - 10.1021/jz100681g

DO - 10.1021/jz100681g

M3 - Article

AN - SCOPUS:77954274500

SN - 1948-7185

VL - 1

SP - 1977

EP - 1981

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 13

ER -

High-activity, durable oxygen reduction electrocatalyst: Nanoscale composite of platinum-tantalum oxyphosphate on vulcan carbon

Abstract

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this