A hydrophobic blend binder for anti-water flooding of cathode catalyst layers in polymer electrolyte membrane fuel cells

Keun Hwan Oh; Wan Keun Kim; Kyung A. Sung; Min Ju Choo; Kwan Woo Nam; Jang Wook Choi; Jung Ki Park

doi:10.1016/j.ijhydene.2011.07.116

A hydrophobic blend binder for anti-water flooding of cathode catalyst layers in polymer electrolyte membrane fuel cells

Keun Hwan Oh, Wan Keun Kim, Kyung A. Sung, Min Ju Choo, Kwan Woo Nam, Jang Wook Choi, Jung Ki Park

Department of Chemical Engineering & Materials Science

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

24 Scopus citations

Abstract

We report polymer electrolyte membrane fuel cells (PEMFCs) in which poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) copolymer was added to the existing sPEEK binder in cathode catalyst layers (CCLs). Compared to a control case with no such copolymer, the cell with the copolymer exhibits improved performance, particularly in the oxygen mass transport. The improved mass transport behavior is attributed to the copolymer that makes CCLs more hydrophobic and thus suppresses water flooding significantly. Contact angle measurements and various electrochemical characterizations consistently support the copolymer effect for the improved oxygen mass transport. In addition, the introduction of P(VdF-co-HFP) lowers the glass transition temperature of the binder, which contributes to enhancing the adhesion properties between the CCLs and membranes.

Original language	English
Pages (from-to)	13695-13702
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	21
DOIs	https://doi.org/10.1016/j.ijhydene.2011.07.116
State	Published - Oct 2011

Bibliographical note

Funding Information:
This work was supported by a Grant from by the Korea Science and Engineering Foundation (KOSEF) Grant (WCU program, 31-2008-000-10055-0 ) funded by the Ministry of Education and Science and Technology (MEST).

Keywords

Catalyst layer
Glass transition temperature
Hydrophobicity
P(VdF-co-HFP)
Water flooding

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10.1016/j.ijhydene.2011.07.116

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title = "A hydrophobic blend binder for anti-water flooding of cathode catalyst layers in polymer electrolyte membrane fuel cells",

abstract = "We report polymer electrolyte membrane fuel cells (PEMFCs) in which poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) copolymer was added to the existing sPEEK binder in cathode catalyst layers (CCLs). Compared to a control case with no such copolymer, the cell with the copolymer exhibits improved performance, particularly in the oxygen mass transport. The improved mass transport behavior is attributed to the copolymer that makes CCLs more hydrophobic and thus suppresses water flooding significantly. Contact angle measurements and various electrochemical characterizations consistently support the copolymer effect for the improved oxygen mass transport. In addition, the introduction of P(VdF-co-HFP) lowers the glass transition temperature of the binder, which contributes to enhancing the adhesion properties between the CCLs and membranes.",

keywords = "Catalyst layer, Glass transition temperature, Hydrophobicity, P(VdF-co-HFP), Water flooding",

author = "Oh, {Keun Hwan} and Kim, {Wan Keun} and Sung, {Kyung A.} and Choo, {Min Ju} and Nam, {Kwan Woo} and Choi, {Jang Wook} and Park, {Jung Ki}",

note = "Funding Information: This work was supported by a Grant from by the Korea Science and Engineering Foundation (KOSEF) Grant (WCU program, 31-2008-000-10055-0 ) funded by the Ministry of Education and Science and Technology (MEST).",

year = "2011",

month = oct,

doi = "10.1016/j.ijhydene.2011.07.116",

language = "English",

volume = "36",

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T1 - A hydrophobic blend binder for anti-water flooding of cathode catalyst layers in polymer electrolyte membrane fuel cells

AU - Oh, Keun Hwan

AU - Kim, Wan Keun

AU - Sung, Kyung A.

AU - Choo, Min Ju

AU - Nam, Kwan Woo

AU - Choi, Jang Wook

AU - Park, Jung Ki

N1 - Funding Information: This work was supported by a Grant from by the Korea Science and Engineering Foundation (KOSEF) Grant (WCU program, 31-2008-000-10055-0 ) funded by the Ministry of Education and Science and Technology (MEST).

PY - 2011/10

Y1 - 2011/10

N2 - We report polymer electrolyte membrane fuel cells (PEMFCs) in which poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) copolymer was added to the existing sPEEK binder in cathode catalyst layers (CCLs). Compared to a control case with no such copolymer, the cell with the copolymer exhibits improved performance, particularly in the oxygen mass transport. The improved mass transport behavior is attributed to the copolymer that makes CCLs more hydrophobic and thus suppresses water flooding significantly. Contact angle measurements and various electrochemical characterizations consistently support the copolymer effect for the improved oxygen mass transport. In addition, the introduction of P(VdF-co-HFP) lowers the glass transition temperature of the binder, which contributes to enhancing the adhesion properties between the CCLs and membranes.

AB - We report polymer electrolyte membrane fuel cells (PEMFCs) in which poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) copolymer was added to the existing sPEEK binder in cathode catalyst layers (CCLs). Compared to a control case with no such copolymer, the cell with the copolymer exhibits improved performance, particularly in the oxygen mass transport. The improved mass transport behavior is attributed to the copolymer that makes CCLs more hydrophobic and thus suppresses water flooding significantly. Contact angle measurements and various electrochemical characterizations consistently support the copolymer effect for the improved oxygen mass transport. In addition, the introduction of P(VdF-co-HFP) lowers the glass transition temperature of the binder, which contributes to enhancing the adhesion properties between the CCLs and membranes.

KW - Catalyst layer

KW - Glass transition temperature

KW - Hydrophobicity

KW - P(VdF-co-HFP)

KW - Water flooding

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U2 - 10.1016/j.ijhydene.2011.07.116

DO - 10.1016/j.ijhydene.2011.07.116

M3 - Article

AN - SCOPUS:83055194526

SN - 0360-3199

VL - 36

SP - 13695

EP - 13702

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 21

ER -

A hydrophobic blend binder for anti-water flooding of cathode catalyst layers in polymer electrolyte membrane fuel cells

Abstract

Bibliographical note

Keywords

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