Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell

Hwan Bae Yu; Joon Hee Kim; Ho In Lee; M. Aulice Scibioh; Jaeyoung Lee; Jonghee Han; Sung Pil Yoon; Heung Yong Ha

doi:10.1016/j.jpowsour.2004.08.015

Development of nanophase CeO₂-Pt/C cathode catalyst for direct methanol fuel cell

Hwan Bae Yu, Joon Hee Kim, Ho In Lee, M. Aulice Scibioh, Jaeyoung Lee, Jonghee Han, Sung Pil Yoon, Heung Yong Ha

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

105 Citations (Scopus)

Abstract

Incorporation of nanophase ceria (CeO₂) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere, leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial pressure (≤0.6 atm) conditions and 1 wt.% CeO₂ doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform distribution of CeO₂ around platinum sites.

Original language	English
Pages (from-to)	59-65
Number of pages	7
Journal	Journal of Power Sources
Volume	140
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2004.08.015
Publication status	Published - 2005

Bibliographical note

Funding Information:
One of the authors, M. Aulice Scibioh, thanks Korean Federation of Science and Technology Societies (KOFST) and Korea Science and Engineering Federation (KOSEF) for support and assistance through Brain Pool Program.

Keywords

Air utilization
Cathode catalyst
Ceo
Direct methanol fuel cell
MEA
Oxygen storage material

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

Access to Document

10.1016/j.jpowsour.2004.08.015

Cite this

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title = "Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell",

abstract = "Incorporation of nanophase ceria (CeO2) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere, leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial pressure (≤0.6 atm) conditions and 1 wt.% CeO2 doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform distribution of CeO2 around platinum sites.",

keywords = "Air utilization, Cathode catalyst, Ceo, Direct methanol fuel cell, MEA, Oxygen storage material",

author = "Yu, {Hwan Bae} and Kim, {Joon Hee} and Lee, {Ho In} and Scibioh, {M. Aulice} and Jaeyoung Lee and Jonghee Han and Yoon, {Sung Pil} and Ha, {Heung Yong}",

note = "Funding Information: One of the authors, M. Aulice Scibioh, thanks Korean Federation of Science and Technology Societies (KOFST) and Korea Science and Engineering Federation (KOSEF) for support and assistance through Brain Pool Program. ",

year = "2005",

doi = "10.1016/j.jpowsour.2004.08.015",

language = "English",

volume = "140",

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T1 - Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell

AU - Yu, Hwan Bae

AU - Kim, Joon Hee

AU - Lee, Ho In

AU - Scibioh, M. Aulice

AU - Lee, Jaeyoung

AU - Han, Jonghee

AU - Yoon, Sung Pil

AU - Ha, Heung Yong

N1 - Funding Information: One of the authors, M. Aulice Scibioh, thanks Korean Federation of Science and Technology Societies (KOFST) and Korea Science and Engineering Federation (KOSEF) for support and assistance through Brain Pool Program.

PY - 2005

Y1 - 2005

N2 - Incorporation of nanophase ceria (CeO2) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere, leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial pressure (≤0.6 atm) conditions and 1 wt.% CeO2 doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform distribution of CeO2 around platinum sites.

AB - Incorporation of nanophase ceria (CeO2) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere, leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial pressure (≤0.6 atm) conditions and 1 wt.% CeO2 doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform distribution of CeO2 around platinum sites.

KW - Air utilization

KW - Cathode catalyst

KW - Ceo

KW - Direct methanol fuel cell

KW - MEA

KW - Oxygen storage material

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