Stability characteristics of Pt 1Ni 1/C as cathode catalysts in membrane electrode assembly of polymer electrolyte membrane fuel cell

Yong Hun Cho; Tae Yeol Jeon; Sung Jong Yoo; Kug Seung Lee; Minjeh Ahn; Ok Hee Kim; Yoon Hwan Cho; Ju Wan Lim; Namgee Jung; Won Sub Yoon; Heeman Choe; Yung Eun Sung

doi:10.1016/j.electacta.2011.10.060

Stability characteristics of Pt ₁Ni ₁/C as cathode catalysts in membrane electrode assembly of polymer electrolyte membrane fuel cell

Yong Hun Cho
, Tae Yeol Jeon
, Sung Jong Yoo
, Kug Seung Lee
, Minjeh Ahn
, Ok Hee Kim
, Yoon Hwan Cho
, Ju Wan Lim
, Namgee Jung
, Won Sub Yoon
, Heeman Choe
, Yung Eun Sung

Department of Energy

Kookmin University
Seoul National University
Korea Institute of Science and Technology

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

26 Scopus citations

Abstract

To understand the difference in degradation characteristics between carbon-supported platinum (Pt/C) and platinum-nickel alloy (Pt ₁Ni ₁/C) cathode catalysts in membrane electrode assemblies (MEAs) of a polymer electrolyte membrane fuel cell (PEMFC), constant current operation of MEA in a single cell was conducted for 1100 h. A significant change in cell potential for the Pt ₁Ni ₁/C MEA was observed throughout the test. High-resolution transmission electron microscopy showed that sintering and detachment of metal particles in the Pt ₁Ni ₁/C catalyst occurred more sparingly than in the Pt/C catalyst. Instead, X-ray photoelectron spectroscopy element mapping revealed dissolution of Ni atoms in the Pt ₁Ni ₁ catalysts even when the Pt ₁Ni ₁/C catalyst used in the MEA was well synthesized.

Original language	English
Pages (from-to)	264-269
Number of pages	6
Journal	Electrochimica Acta
Volume	59
DOIs	https://doi.org/10.1016/j.electacta.2011.10.060
State	Published - 1 Jan 2012

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Constant current operation
Platinum-nickel alloy
Polymer electrolyte membrane fuel cell (PEMFC)
X-ray photoelectron spectroscopy (XPS) element mapping

Access to Document

10.1016/j.electacta.2011.10.060

Cite this

@article{ead1859dba344fe9937dd959b10b6178,

title = "Stability characteristics of Pt 1Ni 1/C as cathode catalysts in membrane electrode assembly of polymer electrolyte membrane fuel cell",

abstract = "To understand the difference in degradation characteristics between carbon-supported platinum (Pt/C) and platinum-nickel alloy (Pt 1Ni 1/C) cathode catalysts in membrane electrode assemblies (MEAs) of a polymer electrolyte membrane fuel cell (PEMFC), constant current operation of MEA in a single cell was conducted for 1100 h. A significant change in cell potential for the Pt 1Ni 1/C MEA was observed throughout the test. High-resolution transmission electron microscopy showed that sintering and detachment of metal particles in the Pt 1Ni 1/C catalyst occurred more sparingly than in the Pt/C catalyst. Instead, X-ray photoelectron spectroscopy element mapping revealed dissolution of Ni atoms in the Pt 1Ni 1 catalysts even when the Pt 1Ni 1/C catalyst used in the MEA was well synthesized.",

keywords = "Constant current operation, Platinum-nickel alloy, Polymer electrolyte membrane fuel cell (PEMFC), X-ray photoelectron spectroscopy (XPS) element mapping",

author = "Cho, \{Yong Hun\} and Jeon, \{Tae Yeol\} and Yoo, \{Sung Jong\} and Lee, \{Kug Seung\} and Minjeh Ahn and Kim, \{Ok Hee\} and Cho, \{Yoon Hwan\} and Lim, \{Ju Wan\} and Namgee Jung and Yoon, \{Won Sub\} and Heeman Choe and Sung, \{Yung Eun\}",

year = "2012",

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doi = "10.1016/j.electacta.2011.10.060",

language = "English",

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journal = "Electrochimica Acta",

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T1 - Stability characteristics of Pt 1Ni 1/C as cathode catalysts in membrane electrode assembly of polymer electrolyte membrane fuel cell

AU - Cho, Yong Hun

AU - Jeon, Tae Yeol

AU - Yoo, Sung Jong

AU - Lee, Kug Seung

AU - Ahn, Minjeh

AU - Kim, Ok Hee

AU - Cho, Yoon Hwan

AU - Lim, Ju Wan

AU - Jung, Namgee

AU - Yoon, Won Sub

AU - Choe, Heeman

AU - Sung, Yung Eun

PY - 2012/1/1

Y1 - 2012/1/1

N2 - To understand the difference in degradation characteristics between carbon-supported platinum (Pt/C) and platinum-nickel alloy (Pt 1Ni 1/C) cathode catalysts in membrane electrode assemblies (MEAs) of a polymer electrolyte membrane fuel cell (PEMFC), constant current operation of MEA in a single cell was conducted for 1100 h. A significant change in cell potential for the Pt 1Ni 1/C MEA was observed throughout the test. High-resolution transmission electron microscopy showed that sintering and detachment of metal particles in the Pt 1Ni 1/C catalyst occurred more sparingly than in the Pt/C catalyst. Instead, X-ray photoelectron spectroscopy element mapping revealed dissolution of Ni atoms in the Pt 1Ni 1 catalysts even when the Pt 1Ni 1/C catalyst used in the MEA was well synthesized.

AB - To understand the difference in degradation characteristics between carbon-supported platinum (Pt/C) and platinum-nickel alloy (Pt 1Ni 1/C) cathode catalysts in membrane electrode assemblies (MEAs) of a polymer electrolyte membrane fuel cell (PEMFC), constant current operation of MEA in a single cell was conducted for 1100 h. A significant change in cell potential for the Pt 1Ni 1/C MEA was observed throughout the test. High-resolution transmission electron microscopy showed that sintering and detachment of metal particles in the Pt 1Ni 1/C catalyst occurred more sparingly than in the Pt/C catalyst. Instead, X-ray photoelectron spectroscopy element mapping revealed dissolution of Ni atoms in the Pt 1Ni 1 catalysts even when the Pt 1Ni 1/C catalyst used in the MEA was well synthesized.

KW - Constant current operation

KW - Platinum-nickel alloy

KW - Polymer electrolyte membrane fuel cell (PEMFC)

KW - X-ray photoelectron spectroscopy (XPS) element mapping

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DO - 10.1016/j.electacta.2011.10.060

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VL - 59

SP - 264

EP - 269

JO - Electrochimica Acta

JF - Electrochimica Acta

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