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Temperature-Dependent Study for Electrochemical Surface Area on a Catalyst Layer Used in a PEFC

Espinoza, R. ; Munoz, Kevin ; Santana, Jordy ; Espinoza Andaluz, Mayken LU and Andersson, Martin LU (2022) 241st ECST Meeting In ECS Transactions 108(7). p.111-118
Abstract

The total of catalytic particles is often unavailable to participate in the electrochemical reactions in a PEFC, which limits the PEFC performance. The electrochemical surface area (ECSA) becomes an important metric to diagnose the catalyst layer's performance and evaluate the development of new electrode materials to achieve better overall efficiency. This work intends to analyze the effects of a temperature sweep on the ECSA and determine the best model that fits the trend based on obtained results from in-situ cyclic voltammetry (CV) tests. The experiment was carried out using a single PEFC of 25 cm2 with a catalyst layer of 0.5mg Pt/cm2 and Nafion® 112 membrane, using hydrogen and nitrogen as reactant gases at 100% relative humidity... (More)

The total of catalytic particles is often unavailable to participate in the electrochemical reactions in a PEFC, which limits the PEFC performance. The electrochemical surface area (ECSA) becomes an important metric to diagnose the catalyst layer's performance and evaluate the development of new electrode materials to achieve better overall efficiency. This work intends to analyze the effects of a temperature sweep on the ECSA and determine the best model that fits the trend based on obtained results from in-situ cyclic voltammetry (CV) tests. The experiment was carried out using a single PEFC of 25 cm2 with a catalyst layer of 0.5mg Pt/cm2 and Nafion® 112 membrane, using hydrogen and nitrogen as reactant gases at 100% relative humidity (RH). The results show a loss of ECSA about 14% in the temperature range evaluated. Besides, it was found that a linear function is adequate to model the correlation based on the experimental data obtained.

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author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Materials for Low Temperature Electrochemical Systems 8
series title
ECS Transactions
volume
108
issue
7
pages
8 pages
publisher
American Institute of Physics (AIP)
conference name
241st ECST Meeting
conference location
Vancouver, Canada
conference dates
2022-05-29 - 2022-06-02
external identifiers
  • scopus:85132396748
ISSN
1938-5862
1938-6737
ISBN
9781607685395
DOI
10.1149/10807.0111ecst
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2022 ECS - The Electrochemical Society.
id
762e1203-20dd-47a5-9ecd-3a5279456da1
date added to LUP
2022-07-04 14:13:56
date last changed
2024-06-09 21:56:06
@inproceedings{762e1203-20dd-47a5-9ecd-3a5279456da1,
  abstract     = {{<p>The total of catalytic particles is often unavailable to participate in the electrochemical reactions in a PEFC, which limits the PEFC performance. The electrochemical surface area (ECSA) becomes an important metric to diagnose the catalyst layer's performance and evaluate the development of new electrode materials to achieve better overall efficiency. This work intends to analyze the effects of a temperature sweep on the ECSA and determine the best model that fits the trend based on obtained results from in-situ cyclic voltammetry (CV) tests. The experiment was carried out using a single PEFC of 25 cm2 with a catalyst layer of 0.5mg Pt/cm2 and Nafion® 112 membrane, using hydrogen and nitrogen as reactant gases at 100% relative humidity (RH). The results show a loss of ECSA about 14% in the temperature range evaluated. Besides, it was found that a linear function is adequate to model the correlation based on the experimental data obtained. </p>}},
  author       = {{Espinoza, R. and Munoz, Kevin and Santana, Jordy and Espinoza Andaluz, Mayken and Andersson, Martin}},
  booktitle    = {{Materials for Low Temperature Electrochemical Systems 8}},
  isbn         = {{9781607685395}},
  issn         = {{1938-5862}},
  language     = {{eng}},
  number       = {{7}},
  pages        = {{111--118}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{ECS Transactions}},
  title        = {{Temperature-Dependent Study for Electrochemical Surface Area on a Catalyst Layer Used in a PEFC}},
  url          = {{http://dx.doi.org/10.1149/10807.0111ecst}},
  doi          = {{10.1149/10807.0111ecst}},
  volume       = {{108}},
  year         = {{2022}},
}