On the catalytic degradation in fuel cell power supplies for long-life mobile field sensors

J. Thangavelautham, S. Dubowsky

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Important tasks such as environment monitoring require field devices such as sensors that can operate for long durations. Current power supply technologies such as batteries limit many applications. Fuel cells are a promising alternative to batteries because they can have much higher energy densities. However, their lives may be short due to catalyst degradation. Here, a simplified model of proton exchange membrane (PEM) fuel cell catalyst degradation is applied to small fuel cells. The model focuses on the combined effects of catalyst dissolution and migration. The effect of migration on catalyst degradation is found to be substantial and this has not been accounted for in previous models. The model considers the effect of field conditions such as varying power demands, temperature and humidity, and predicts the catalyst life of the fuel cell and its power output. The predicted life is a proposed metric that can quantify the relative importance and effect of field conditions on the catalyst particularly for the design and control of fuel cell power supplies. Experiments are presented that support the model. This model is applied to a study on field sensors and results suggests unless PEM fuel cells are isolated from damaging field conditions, they will have short lives.

Original languageEnglish (US)
Pages (from-to)181-195
Number of pages15
JournalFuel Cells
Volume13
Issue number2
DOIs
StatePublished - Apr 2013
Externally publishedYes

Fingerprint

Fuel cells
Degradation
Catalysts
Sensors
Proton exchange membrane fuel cells (PEMFC)
Atmospheric humidity
Dissolution
Monitoring
Experiments
Temperature

Keywords

  • Catalyst Degradation
  • Field Sensors
  • Fuel Cells
  • Mobile Power

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology

Cite this

On the catalytic degradation in fuel cell power supplies for long-life mobile field sensors. / Thangavelautham, J.; Dubowsky, S.

In: Fuel Cells, Vol. 13, No. 2, 04.2013, p. 181-195.

Research output: Contribution to journalArticle

Thangavelautham, J. ; Dubowsky, S. / On the catalytic degradation in fuel cell power supplies for long-life mobile field sensors. In: Fuel Cells. 2013 ; Vol. 13, No. 2. pp. 181-195.
@article{aac2237b09e947d9bdbd4c00537bedcb,
title = "On the catalytic degradation in fuel cell power supplies for long-life mobile field sensors",
abstract = "Important tasks such as environment monitoring require field devices such as sensors that can operate for long durations. Current power supply technologies such as batteries limit many applications. Fuel cells are a promising alternative to batteries because they can have much higher energy densities. However, their lives may be short due to catalyst degradation. Here, a simplified model of proton exchange membrane (PEM) fuel cell catalyst degradation is applied to small fuel cells. The model focuses on the combined effects of catalyst dissolution and migration. The effect of migration on catalyst degradation is found to be substantial and this has not been accounted for in previous models. The model considers the effect of field conditions such as varying power demands, temperature and humidity, and predicts the catalyst life of the fuel cell and its power output. The predicted life is a proposed metric that can quantify the relative importance and effect of field conditions on the catalyst particularly for the design and control of fuel cell power supplies. Experiments are presented that support the model. This model is applied to a study on field sensors and results suggests unless PEM fuel cells are isolated from damaging field conditions, they will have short lives.",
keywords = "Catalyst Degradation, Field Sensors, Fuel Cells, Mobile Power",
author = "J. Thangavelautham and S. Dubowsky",
year = "2013",
month = "4",
doi = "10.1002/fuce.201200065",
language = "English (US)",
volume = "13",
pages = "181--195",
journal = "Fuel Cells",
issn = "1615-6846",
publisher = "John Wiley and Sons Ltd",
number = "2",

}

TY - JOUR

T1 - On the catalytic degradation in fuel cell power supplies for long-life mobile field sensors

AU - Thangavelautham, J.

AU - Dubowsky, S.

PY - 2013/4

Y1 - 2013/4

N2 - Important tasks such as environment monitoring require field devices such as sensors that can operate for long durations. Current power supply technologies such as batteries limit many applications. Fuel cells are a promising alternative to batteries because they can have much higher energy densities. However, their lives may be short due to catalyst degradation. Here, a simplified model of proton exchange membrane (PEM) fuel cell catalyst degradation is applied to small fuel cells. The model focuses on the combined effects of catalyst dissolution and migration. The effect of migration on catalyst degradation is found to be substantial and this has not been accounted for in previous models. The model considers the effect of field conditions such as varying power demands, temperature and humidity, and predicts the catalyst life of the fuel cell and its power output. The predicted life is a proposed metric that can quantify the relative importance and effect of field conditions on the catalyst particularly for the design and control of fuel cell power supplies. Experiments are presented that support the model. This model is applied to a study on field sensors and results suggests unless PEM fuel cells are isolated from damaging field conditions, they will have short lives.

AB - Important tasks such as environment monitoring require field devices such as sensors that can operate for long durations. Current power supply technologies such as batteries limit many applications. Fuel cells are a promising alternative to batteries because they can have much higher energy densities. However, their lives may be short due to catalyst degradation. Here, a simplified model of proton exchange membrane (PEM) fuel cell catalyst degradation is applied to small fuel cells. The model focuses on the combined effects of catalyst dissolution and migration. The effect of migration on catalyst degradation is found to be substantial and this has not been accounted for in previous models. The model considers the effect of field conditions such as varying power demands, temperature and humidity, and predicts the catalyst life of the fuel cell and its power output. The predicted life is a proposed metric that can quantify the relative importance and effect of field conditions on the catalyst particularly for the design and control of fuel cell power supplies. Experiments are presented that support the model. This model is applied to a study on field sensors and results suggests unless PEM fuel cells are isolated from damaging field conditions, they will have short lives.

KW - Catalyst Degradation

KW - Field Sensors

KW - Fuel Cells

KW - Mobile Power

UR - http://www.scopus.com/inward/record.url?scp=84876008614&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876008614&partnerID=8YFLogxK

U2 - 10.1002/fuce.201200065

DO - 10.1002/fuce.201200065

M3 - Article

VL - 13

SP - 181

EP - 195

JO - Fuel Cells

JF - Fuel Cells

SN - 1615-6846

IS - 2

ER -