Microscopic analysis of PEMFC catalyst layers

K. Chintam; K. L. More; K. S. Reeves; N. Macauley; D. Hooks; R. L. Borup

doi:10.1149/09208.0095ecst

Microscopic analysis of PEMFC catalyst layers

K. Chintam
, K. L. More
, K. S. Reeves
, N. Macauley
, D. Hooks
, R. L. Borup

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

Atomic force microscopy (AFM) is used as a tool to analyze agglomerates in proton exchange membrane fuel cell electrodes. Catalyst layers were prepared with catalyst inks with varying ionomer/carbon (I/C) ratios. AFM was used to image the height and adhesion on the electrode surface and in cross-section to study the relationship between the I/C, carbon particle size, and agglomerate size. A positive correlation between ionomer coverage and particle diameter and I/C was observed. There was no identifiable trend observed between ionomer thickness in agglomerates and I/C, suggesting that ionomer coats the surface in the z direction at higher I/C ratios.

Original language	English
Title of host publication	Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19
Editors	K. Swider-Lyons, H. Uchida, F. Buechi, W. E. Mustain, B. S. Pivovar, P. N. Pintauro, A. Z. Weber, D. Jones, H. Gasteiger, C. A. Rice, P. Strasser, E. Kjeang, K. Shinohara, S. Mitsushima, Y.-T. Kim, T. J. Schmidt, J. M. Fenton, R. A. Mantz, B. Lakshmanan, H. Xu
Publisher	Electrochemical Society Inc.
Pages	95-105
Number of pages	11
Edition	8
ISBN (Electronic)	9781607688822
ISBN (Print)	9781607688822
DOIs	https://doi.org/10.1149/09208.0095ecst
State	Published - 2019
Event	Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting - Atlanta, United States Duration: Oct 13 2019 → Oct 17 2019

Publication series

Name	ECS Transactions
Number	8
Volume	92
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting
Country/Territory	United States
City	Atlanta
Period	10/13/19 → 10/17/19

Funding

This research is supported by the U.S. Department of Energy Fuel Cell Technologies Office, through the Fuel Cell Performance and Durability (FC-PAD) Consortium (Fuel Cells Program Manager: Dimitrios Papageorgopoulos and Technical Development Manager: Greg Kleen). A portion of this work was performed at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is managed by Triad National Security, LLC for the U.S. Department of Energy's NNSA, under contract 89233218CNA000001.

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Chintam, K., More, K. L., Reeves, K. S., Macauley, N., Hooks, D., & Borup, R. L. (2019). Microscopic analysis of PEMFC catalyst layers. In K. Swider-Lyons, H. Uchida, F. Buechi, W. E. Mustain, B. S. Pivovar, P. N. Pintauro, A. Z. Weber, D. Jones, H. Gasteiger, C. A. Rice, P. Strasser, E. Kjeang, K. Shinohara, S. Mitsushima, Y.-T. Kim, T. J. Schmidt, J. M. Fenton, R. A. Mantz, B. Lakshmanan, & H. Xu (Eds.), Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19 (8 ed., pp. 95-105). (ECS Transactions; Vol. 92, No. 8). Electrochemical Society Inc.. https://doi.org/10.1149/09208.0095ecst

Chintam, K. ; More, K. L. ; Reeves, K. S. et al. / Microscopic analysis of PEMFC catalyst layers. Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19. editor / K. Swider-Lyons ; H. Uchida ; F. Buechi ; W. E. Mustain ; B. S. Pivovar ; P. N. Pintauro ; A. Z. Weber ; D. Jones ; H. Gasteiger ; C. A. Rice ; P. Strasser ; E. Kjeang ; K. Shinohara ; S. Mitsushima ; Y.-T. Kim ; T. J. Schmidt ; J. M. Fenton ; R. A. Mantz ; B. Lakshmanan ; H. Xu. 8. ed. Electrochemical Society Inc., 2019. pp. 95-105 (ECS Transactions; 8).

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title = "Microscopic analysis of PEMFC catalyst layers",

abstract = "Atomic force microscopy (AFM) is used as a tool to analyze agglomerates in proton exchange membrane fuel cell electrodes. Catalyst layers were prepared with catalyst inks with varying ionomer/carbon (I/C) ratios. AFM was used to image the height and adhesion on the electrode surface and in cross-section to study the relationship between the I/C, carbon particle size, and agglomerate size. A positive correlation between ionomer coverage and particle diameter and I/C was observed. There was no identifiable trend observed between ionomer thickness in agglomerates and I/C, suggesting that ionomer coats the surface in the z direction at higher I/C ratios.",

author = "K. Chintam and More, \{K. L.\} and Reeves, \{K. S.\} and N. Macauley and D. Hooks and Borup, \{R. L.\}",

note = "Publisher Copyright: {\textcopyright} The Electrochemical Society.; Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting ; Conference date: 13-10-2019 Through 17-10-2019",

year = "2019",

doi = "10.1149/09208.0095ecst",

language = "English",

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series = "ECS Transactions",

publisher = "Electrochemical Society Inc.",

number = "8",

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booktitle = "Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19",

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Chintam, K, More, KL, Reeves, KS, Macauley, N, Hooks, D & Borup, RL 2019, Microscopic analysis of PEMFC catalyst layers. in K Swider-Lyons, H Uchida, F Buechi, WE Mustain, BS Pivovar, PN Pintauro, AZ Weber, D Jones, H Gasteiger, CA Rice, P Strasser, E Kjeang, K Shinohara, S Mitsushima, Y-T Kim, TJ Schmidt, JM Fenton, RA Mantz, B Lakshmanan & H Xu (eds), Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19. 8 edn, ECS Transactions, no. 8, vol. 92, Electrochemical Society Inc., pp. 95-105, Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting, Atlanta, United States, 10/13/19. https://doi.org/10.1149/09208.0095ecst

Microscopic analysis of PEMFC catalyst layers. / Chintam, K.; More, K. L.; Reeves, K. S. et al.
Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19. ed. / K. Swider-Lyons; H. Uchida; F. Buechi; W. E. Mustain; B. S. Pivovar; P. N. Pintauro; A. Z. Weber; D. Jones; H. Gasteiger; C. A. Rice; P. Strasser; E. Kjeang; K. Shinohara; S. Mitsushima; Y.-T. Kim; T. J. Schmidt; J. M. Fenton; R. A. Mantz; B. Lakshmanan; H. Xu. 8. ed. Electrochemical Society Inc., 2019. p. 95-105 (ECS Transactions; Vol. 92, No. 8).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Microscopic analysis of PEMFC catalyst layers

AU - Chintam, K.

AU - More, K. L.

AU - Reeves, K. S.

AU - Macauley, N.

AU - Hooks, D.

AU - Borup, R. L.

N1 - Publisher Copyright: © The Electrochemical Society.

PY - 2019

Y1 - 2019

N2 - Atomic force microscopy (AFM) is used as a tool to analyze agglomerates in proton exchange membrane fuel cell electrodes. Catalyst layers were prepared with catalyst inks with varying ionomer/carbon (I/C) ratios. AFM was used to image the height and adhesion on the electrode surface and in cross-section to study the relationship between the I/C, carbon particle size, and agglomerate size. A positive correlation between ionomer coverage and particle diameter and I/C was observed. There was no identifiable trend observed between ionomer thickness in agglomerates and I/C, suggesting that ionomer coats the surface in the z direction at higher I/C ratios.

AB - Atomic force microscopy (AFM) is used as a tool to analyze agglomerates in proton exchange membrane fuel cell electrodes. Catalyst layers were prepared with catalyst inks with varying ionomer/carbon (I/C) ratios. AFM was used to image the height and adhesion on the electrode surface and in cross-section to study the relationship between the I/C, carbon particle size, and agglomerate size. A positive correlation between ionomer coverage and particle diameter and I/C was observed. There was no identifiable trend observed between ionomer thickness in agglomerates and I/C, suggesting that ionomer coats the surface in the z direction at higher I/C ratios.

UR - https://www.scopus.com/pages/publications/85077494003

U2 - 10.1149/09208.0095ecst

DO - 10.1149/09208.0095ecst

M3 - Conference contribution

AN - SCOPUS:85077494003

SN - 9781607688822

T3 - ECS Transactions

SP - 95

EP - 105

BT - Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19

A2 - Swider-Lyons, K.

A2 - Uchida, H.

A2 - Buechi, F.

A2 - Mustain, W. E.

A2 - Pivovar, B. S.

A2 - Pintauro, P. N.

A2 - Weber, A. Z.

A2 - Jones, D.

A2 - Gasteiger, H.

A2 - Rice, C. A.

A2 - Strasser, P.

A2 - Kjeang, E.

A2 - Shinohara, K.

A2 - Mitsushima, S.

A2 - Kim, Y.-T.

A2 - Schmidt, T. J.

A2 - Fenton, J. M.

A2 - Mantz, R. A.

A2 - Lakshmanan, B.

A2 - Xu, H.

PB - Electrochemical Society Inc.

T2 - Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting

Y2 - 13 October 2019 through 17 October 2019

ER -

Chintam K, More KL, Reeves KS, Macauley N, Hooks D, Borup RL. Microscopic analysis of PEMFC catalyst layers. In Swider-Lyons K, Uchida H, Buechi F, Mustain WE, Pivovar BS, Pintauro PN, Weber AZ, Jones D, Gasteiger H, Rice CA, Strasser P, Kjeang E, Shinohara K, Mitsushima S, Kim YT, Schmidt TJ, Fenton JM, Mantz RA, Lakshmanan B, Xu H, editors, Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19. 8 ed. Electrochemical Society Inc. 2019. p. 95-105. (ECS Transactions; 8). doi: 10.1149/09208.0095ecst

Microscopic analysis of PEMFC catalyst layers

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