A cross-sectional observation of water behavior in the flow channel in PEFC

Sang Kun Lee; Kohei Ito; Kazunari Sasaki

doi:10.1149/1.3484638

A cross-sectional observation of water behavior in the flow channel in PEFC

Sang Kun Lee, Kohei Ito, Kazunari Sasaki

Hydrogen Utilization Engineering

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

5 Citations (Scopus)

Abstract

Liquid water growth pattern in the gas flow channel in PEFC was visualized by using an ex-situ optical cross-sectional observation system developed. We investigated the impact of surface hydrophobicity of the GDL and channel on the liquid water growth pattern. The liquid water, which was emerged at 5 mm back from the gas outlet, was observed with spatial resolution of 20 μm by optimizing the optical system including CCD camera. Pressure drop through the channel was measured to evaluate the impact of water droplet on it. As a result, it is obtained that adhesion force formed in combination of hydrophobic GDL and hydrophilic channel sucked the water from GDL to channel corner, and suppressed the water contact with the GDL surface, and accelerated the water drainage, leading to prevent the water droplet growing in the channel.

Original language	English
Title of host publication	Polymer Electrolyte Fuel Cells 10, PEFC 10
Pages	1457-1463
Number of pages	7
Edition	1 PART 2
DOIs	https://doi.org/10.1149/1.3484638
Publication status	Published - 2010
Event	10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States Duration: Oct 10 2010 → Oct 15 2010

Publication series

Name	ECS Transactions
Number	1 PART 2
Volume	33
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting
Country/Territory	United States
City	Las Vegas, NV
Period	10/10/10 → 10/15/10

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1149/1.3484638

Cite this

Lee, SK, Ito, K & Sasaki, K 2010, A cross-sectional observation of water behavior in the flow channel in PEFC. in Polymer Electrolyte Fuel Cells 10, PEFC 10. 1 PART 2 edn, ECS Transactions, no. 1 PART 2, vol. 33, pp. 1457-1463, 10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting, Las Vegas, NV, United States, 10/10/10. https://doi.org/10.1149/1.3484638

@inproceedings{68d7e25f17b94012932011109a6afada,

title = "A cross-sectional observation of water behavior in the flow channel in PEFC",

abstract = "Liquid water growth pattern in the gas flow channel in PEFC was visualized by using an ex-situ optical cross-sectional observation system developed. We investigated the impact of surface hydrophobicity of the GDL and channel on the liquid water growth pattern. The liquid water, which was emerged at 5 mm back from the gas outlet, was observed with spatial resolution of 20 μm by optimizing the optical system including CCD camera. Pressure drop through the channel was measured to evaluate the impact of water droplet on it. As a result, it is obtained that adhesion force formed in combination of hydrophobic GDL and hydrophilic channel sucked the water from GDL to channel corner, and suppressed the water contact with the GDL surface, and accelerated the water drainage, leading to prevent the water droplet growing in the channel.",

author = "Lee, {Sang Kun} and Kohei Ito and Kazunari Sasaki",

year = "2010",

doi = "10.1149/1.3484638",

language = "English",

isbn = "9781566778206",

series = "ECS Transactions",

number = "1 PART 2",

pages = "1457--1463",

booktitle = "Polymer Electrolyte Fuel Cells 10, PEFC 10",

edition = "1 PART 2",

note = "10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting ; Conference date: 10-10-2010 Through 15-10-2010",

}

TY - GEN

T1 - A cross-sectional observation of water behavior in the flow channel in PEFC

AU - Lee, Sang Kun

AU - Ito, Kohei

AU - Sasaki, Kazunari

PY - 2010

Y1 - 2010

N2 - Liquid water growth pattern in the gas flow channel in PEFC was visualized by using an ex-situ optical cross-sectional observation system developed. We investigated the impact of surface hydrophobicity of the GDL and channel on the liquid water growth pattern. The liquid water, which was emerged at 5 mm back from the gas outlet, was observed with spatial resolution of 20 μm by optimizing the optical system including CCD camera. Pressure drop through the channel was measured to evaluate the impact of water droplet on it. As a result, it is obtained that adhesion force formed in combination of hydrophobic GDL and hydrophilic channel sucked the water from GDL to channel corner, and suppressed the water contact with the GDL surface, and accelerated the water drainage, leading to prevent the water droplet growing in the channel.

AB - Liquid water growth pattern in the gas flow channel in PEFC was visualized by using an ex-situ optical cross-sectional observation system developed. We investigated the impact of surface hydrophobicity of the GDL and channel on the liquid water growth pattern. The liquid water, which was emerged at 5 mm back from the gas outlet, was observed with spatial resolution of 20 μm by optimizing the optical system including CCD camera. Pressure drop through the channel was measured to evaluate the impact of water droplet on it. As a result, it is obtained that adhesion force formed in combination of hydrophobic GDL and hydrophilic channel sucked the water from GDL to channel corner, and suppressed the water contact with the GDL surface, and accelerated the water drainage, leading to prevent the water droplet growing in the channel.

UR - http://www.scopus.com/inward/record.url?scp=79952674625&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952674625&partnerID=8YFLogxK

U2 - 10.1149/1.3484638

DO - 10.1149/1.3484638

M3 - Conference contribution

AN - SCOPUS:79952674625

SN - 9781566778206

T3 - ECS Transactions

SP - 1457

EP - 1463

BT - Polymer Electrolyte Fuel Cells 10, PEFC 10

T2 - 10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting

Y2 - 10 October 2010 through 15 October 2010

ER -

A cross-sectional observation of water behavior in the flow channel in PEFC

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this