Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers

A. J. Mendoza; M. A. Hickner; J. Morgan; K. Rutter; C. Legzdins

doi:10.1002/fuce.201000096

Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers

A. J. Mendoza, M. A. Hickner, J. Morgan, K. Rutter, C. Legzdins

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

25 Scopus citations

Abstract

Raman microspectroscopy was used to gather spatially resolved chemical information on the carbon and poly(tetrafluoroethylene) (PTFE) distribution of fuel cell gas diffusion layers (GDL). GDLs with varying PTFE content were imaged over areas of 1,000 μ × 1,000 μ and it was found that the distribution of concentrated PTFE regions on the surface of the GDLs and morphology of the carbon fibre paper was readily observed. Spectroscopic measurements with point-by-point resolutions varying between 10 and 500 μ were performed on samples having 1.8-44 wt.% PTFE before and after the PTFE was sintered. The average PTFE signal detected on the surface of the GDLs increased monotonically for both unsintered and sintered GDLs with increasing bulk PTFE loading. The unsintered GDLs had higher PTFE signals on their surface compared to sintered GDLs and showed more concentrated PTFE regions in the mapping experiments.

Original language	English (US)
Pages (from-to)	248-254
Number of pages	7
Journal	Fuel Cells
Volume	11
Issue number	2
DOIs	https://doi.org/10.1002/fuce.201000096
State	Published - Apr 2011

All Science Journal Classification (ASJC) codes

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

UN SDGs

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

Access to Document

10.1002/fuce.201000096

Cite this

@article{d776f9644e984896b89ddb01419f2c1f,

title = "Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers",

abstract = "Raman microspectroscopy was used to gather spatially resolved chemical information on the carbon and poly(tetrafluoroethylene) (PTFE) distribution of fuel cell gas diffusion layers (GDL). GDLs with varying PTFE content were imaged over areas of 1,000 μ × 1,000 μ and it was found that the distribution of concentrated PTFE regions on the surface of the GDLs and morphology of the carbon fibre paper was readily observed. Spectroscopic measurements with point-by-point resolutions varying between 10 and 500 μ were performed on samples having 1.8-44 wt.% PTFE before and after the PTFE was sintered. The average PTFE signal detected on the surface of the GDLs increased monotonically for both unsintered and sintered GDLs with increasing bulk PTFE loading. The unsintered GDLs had higher PTFE signals on their surface compared to sintered GDLs and showed more concentrated PTFE regions in the mapping experiments.",

author = "Mendoza, {A. J.} and Hickner, {M. A.} and J. Morgan and K. Rutter and C. Legzdins",

year = "2011",

month = apr,

doi = "10.1002/fuce.201000096",

language = "English (US)",

volume = "11",

pages = "248--254",

journal = "Fuel Cells",

issn = "1615-6846",

publisher = "John Wiley and Sons Ltd",

number = "2",

}

TY - JOUR

T1 - Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers

AU - Mendoza, A. J.

AU - Hickner, M. A.

AU - Morgan, J.

AU - Rutter, K.

AU - Legzdins, C.

PY - 2011/4

Y1 - 2011/4

N2 - Raman microspectroscopy was used to gather spatially resolved chemical information on the carbon and poly(tetrafluoroethylene) (PTFE) distribution of fuel cell gas diffusion layers (GDL). GDLs with varying PTFE content were imaged over areas of 1,000 μ × 1,000 μ and it was found that the distribution of concentrated PTFE regions on the surface of the GDLs and morphology of the carbon fibre paper was readily observed. Spectroscopic measurements with point-by-point resolutions varying between 10 and 500 μ were performed on samples having 1.8-44 wt.% PTFE before and after the PTFE was sintered. The average PTFE signal detected on the surface of the GDLs increased monotonically for both unsintered and sintered GDLs with increasing bulk PTFE loading. The unsintered GDLs had higher PTFE signals on their surface compared to sintered GDLs and showed more concentrated PTFE regions in the mapping experiments.

AB - Raman microspectroscopy was used to gather spatially resolved chemical information on the carbon and poly(tetrafluoroethylene) (PTFE) distribution of fuel cell gas diffusion layers (GDL). GDLs with varying PTFE content were imaged over areas of 1,000 μ × 1,000 μ and it was found that the distribution of concentrated PTFE regions on the surface of the GDLs and morphology of the carbon fibre paper was readily observed. Spectroscopic measurements with point-by-point resolutions varying between 10 and 500 μ were performed on samples having 1.8-44 wt.% PTFE before and after the PTFE was sintered. The average PTFE signal detected on the surface of the GDLs increased monotonically for both unsintered and sintered GDLs with increasing bulk PTFE loading. The unsintered GDLs had higher PTFE signals on their surface compared to sintered GDLs and showed more concentrated PTFE regions in the mapping experiments.

UR - http://www.scopus.com/inward/record.url?scp=79954534972&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79954534972&partnerID=8YFLogxK

U2 - 10.1002/fuce.201000096

DO - 10.1002/fuce.201000096

M3 - Article

AN - SCOPUS:79954534972

SN - 1615-6846

VL - 11

SP - 248

EP - 254

JO - Fuel Cells

JF - Fuel Cells

IS - 2

ER -

Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers

Abstract

All Science Journal Classification (ASJC) codes

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this