Electrochemical analysis of perpendicular mesoporous Pt electrode filled with pure water for clarifying the active region in fuel cell catalyst layers

Satoshi Tominaka; Chia Wen Wu; Kazuyuki Kuroda; Tetsuya Osaka

doi:10.1016/j.jpowsour.2009.11.002

Electrochemical analysis of perpendicular mesoporous Pt electrode filled with pure water for clarifying the active region in fuel cell catalyst layers

Satoshi Tominaka, Chia Wen Wu^*, Kazuyuki Kuroda, Tetsuya Osaka

^*Corresponding author for this work

Research Organization for Nano & Life Innovation

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

19 Citations (Scopus)

Abstract

A perpendicular mesoporous platinum film is used as a model electrode to clarify the effectiveness of catalysts inside agglomerates of fuel cell catalyst layers on the basis of experimental facts. The analysis clarifies that: (i) Pt surface even apart from Nafion ionomer phase can be electrochemically active; (ii) its response is different from that of the surface covered with ionomer; and (iii) ionic resistance in pores filled with pure water is too high (ca. 0.18 MΩ cm) for fuel cell reactions to smoothly occur. We conclude that such catalysts in pores filled with pure water are ineffective for fuel cell reactions due to the high ionic resistance, though their catalytic activity is possibly higher than that of the catalysts covered with Nafion.

Original language	English
Pages (from-to)	2236-2240
Number of pages	5
Journal	Journal of Power Sources
Volume	195
Issue number	8
DOIs	https://doi.org/10.1016/j.jpowsour.2009.11.002
Publication status	Published - 2010 Apr 15

Keywords

Catalyst layer
Catalyst utilization
Fuel cell
Mesoporous platinum
Model electrode

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.2009.11.002

Cite this

@article{15f8acb6129f4528a4b54a744db9da20,

title = "Electrochemical analysis of perpendicular mesoporous Pt electrode filled with pure water for clarifying the active region in fuel cell catalyst layers",

abstract = "A perpendicular mesoporous platinum film is used as a model electrode to clarify the effectiveness of catalysts inside agglomerates of fuel cell catalyst layers on the basis of experimental facts. The analysis clarifies that: (i) Pt surface even apart from Nafion ionomer phase can be electrochemically active; (ii) its response is different from that of the surface covered with ionomer; and (iii) ionic resistance in pores filled with pure water is too high (ca. 0.18 MΩ cm) for fuel cell reactions to smoothly occur. We conclude that such catalysts in pores filled with pure water are ineffective for fuel cell reactions due to the high ionic resistance, though their catalytic activity is possibly higher than that of the catalysts covered with Nafion.",

keywords = "Catalyst layer, Catalyst utilization, Fuel cell, Mesoporous platinum, Model electrode",

author = "Satoshi Tominaka and Wu, {Chia Wen} and Kazuyuki Kuroda and Tetsuya Osaka",

year = "2010",

month = apr,

day = "15",

doi = "10.1016/j.jpowsour.2009.11.002",

language = "English",

volume = "195",

pages = "2236--2240",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

number = "8",

}

TY - JOUR

T1 - Electrochemical analysis of perpendicular mesoporous Pt electrode filled with pure water for clarifying the active region in fuel cell catalyst layers

AU - Tominaka, Satoshi

AU - Wu, Chia Wen

AU - Kuroda, Kazuyuki

AU - Osaka, Tetsuya

PY - 2010/4/15

Y1 - 2010/4/15

N2 - A perpendicular mesoporous platinum film is used as a model electrode to clarify the effectiveness of catalysts inside agglomerates of fuel cell catalyst layers on the basis of experimental facts. The analysis clarifies that: (i) Pt surface even apart from Nafion ionomer phase can be electrochemically active; (ii) its response is different from that of the surface covered with ionomer; and (iii) ionic resistance in pores filled with pure water is too high (ca. 0.18 MΩ cm) for fuel cell reactions to smoothly occur. We conclude that such catalysts in pores filled with pure water are ineffective for fuel cell reactions due to the high ionic resistance, though their catalytic activity is possibly higher than that of the catalysts covered with Nafion.

AB - A perpendicular mesoporous platinum film is used as a model electrode to clarify the effectiveness of catalysts inside agglomerates of fuel cell catalyst layers on the basis of experimental facts. The analysis clarifies that: (i) Pt surface even apart from Nafion ionomer phase can be electrochemically active; (ii) its response is different from that of the surface covered with ionomer; and (iii) ionic resistance in pores filled with pure water is too high (ca. 0.18 MΩ cm) for fuel cell reactions to smoothly occur. We conclude that such catalysts in pores filled with pure water are ineffective for fuel cell reactions due to the high ionic resistance, though their catalytic activity is possibly higher than that of the catalysts covered with Nafion.

KW - Catalyst layer

KW - Catalyst utilization

KW - Fuel cell

KW - Mesoporous platinum

KW - Model electrode

UR - http://www.scopus.com/inward/record.url?scp=74249118818&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=74249118818&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2009.11.002

DO - 10.1016/j.jpowsour.2009.11.002

M3 - Article

AN - SCOPUS:74249118818

SN - 0378-7753

VL - 195

SP - 2236

EP - 2240

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 8

ER -

Electrochemical analysis of perpendicular mesoporous Pt electrode filled with pure water for clarifying the active region in fuel cell catalyst layers

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this