Analysis and visualization of water flow impact on hydrogen production efficiency in solid polymer water electrolyzer under high-pressure condition

Kohei Ito, Yusuke Maeda, Takuya Sakaguchi, Shigeru Tsukamoto, Akiko Inada, Yuta Tsuchiya, Hironori Nakajima

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

When a solid polymer water electrolyzer (SPWE) is operated under high-pressure conditions, a large pressure difference occurs between the anode and cathode. This causes crossover of produced gas, especially hydrogen gas, leading to a decrease in the production efficiency of an SPWE. As a countermeasure against gas crossover, water should be supplied into the cathode channel, as well as into the anode channel, because the water flow will facilitate the drainage of hydrogen gas outside of the cell, resulting in decreased crossover and increased efficiency of the SPWE. This countermeasure is evaluated by observing SPWE operation at a pressure of 2 MPa, with a visualization of hydrogen bubbles in the cathode channel. The evaluation revealed that supplying water into the cathode channel increases the efficiency by several percent at 0.33 A/cm2. Further, the visualization of the hydrogen bubbles revealed an enhancement in the separation of hydrogen bubbles from the surface of the current supplier. This suggests that additional water flow can increase the hydrogen production efficiency through promoting bubble detachment.

Original languageEnglish
Pages (from-to)5995-6003
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number18
DOIs
Publication statusPublished - Jan 1 2015

Fingerprint

Flow of water
water flow
hydrogen production
Hydrogen production
Visualization
polymers
Polymers
bubbles
cathodes
water
hydrogen
Water
crossovers
Cathodes
countermeasures
Hydrogen
gases
anodes
Gases
Anodes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Analysis and visualization of water flow impact on hydrogen production efficiency in solid polymer water electrolyzer under high-pressure condition. / Ito, Kohei; Maeda, Yusuke; Sakaguchi, Takuya; Tsukamoto, Shigeru; Inada, Akiko; Tsuchiya, Yuta; Nakajima, Hironori.

In: International Journal of Hydrogen Energy, Vol. 40, No. 18, 01.01.2015, p. 5995-6003.

Research output: Contribution to journalArticle

@article{5044def850384b9aaa6a3d8cfb5d3ec8,
title = "Analysis and visualization of water flow impact on hydrogen production efficiency in solid polymer water electrolyzer under high-pressure condition",
abstract = "When a solid polymer water electrolyzer (SPWE) is operated under high-pressure conditions, a large pressure difference occurs between the anode and cathode. This causes crossover of produced gas, especially hydrogen gas, leading to a decrease in the production efficiency of an SPWE. As a countermeasure against gas crossover, water should be supplied into the cathode channel, as well as into the anode channel, because the water flow will facilitate the drainage of hydrogen gas outside of the cell, resulting in decreased crossover and increased efficiency of the SPWE. This countermeasure is evaluated by observing SPWE operation at a pressure of 2 MPa, with a visualization of hydrogen bubbles in the cathode channel. The evaluation revealed that supplying water into the cathode channel increases the efficiency by several percent at 0.33 A/cm2. Further, the visualization of the hydrogen bubbles revealed an enhancement in the separation of hydrogen bubbles from the surface of the current supplier. This suggests that additional water flow can increase the hydrogen production efficiency through promoting bubble detachment.",
author = "Kohei Ito and Yusuke Maeda and Takuya Sakaguchi and Shigeru Tsukamoto and Akiko Inada and Yuta Tsuchiya and Hironori Nakajima",
year = "2015",
month = "1",
day = "1",
doi = "10.1016/j.ijhydene.2015.03.045",
language = "English",
volume = "40",
pages = "5995--6003",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "18",

}

TY - JOUR

T1 - Analysis and visualization of water flow impact on hydrogen production efficiency in solid polymer water electrolyzer under high-pressure condition

AU - Ito, Kohei

AU - Maeda, Yusuke

AU - Sakaguchi, Takuya

AU - Tsukamoto, Shigeru

AU - Inada, Akiko

AU - Tsuchiya, Yuta

AU - Nakajima, Hironori

PY - 2015/1/1

Y1 - 2015/1/1

N2 - When a solid polymer water electrolyzer (SPWE) is operated under high-pressure conditions, a large pressure difference occurs between the anode and cathode. This causes crossover of produced gas, especially hydrogen gas, leading to a decrease in the production efficiency of an SPWE. As a countermeasure against gas crossover, water should be supplied into the cathode channel, as well as into the anode channel, because the water flow will facilitate the drainage of hydrogen gas outside of the cell, resulting in decreased crossover and increased efficiency of the SPWE. This countermeasure is evaluated by observing SPWE operation at a pressure of 2 MPa, with a visualization of hydrogen bubbles in the cathode channel. The evaluation revealed that supplying water into the cathode channel increases the efficiency by several percent at 0.33 A/cm2. Further, the visualization of the hydrogen bubbles revealed an enhancement in the separation of hydrogen bubbles from the surface of the current supplier. This suggests that additional water flow can increase the hydrogen production efficiency through promoting bubble detachment.

AB - When a solid polymer water electrolyzer (SPWE) is operated under high-pressure conditions, a large pressure difference occurs between the anode and cathode. This causes crossover of produced gas, especially hydrogen gas, leading to a decrease in the production efficiency of an SPWE. As a countermeasure against gas crossover, water should be supplied into the cathode channel, as well as into the anode channel, because the water flow will facilitate the drainage of hydrogen gas outside of the cell, resulting in decreased crossover and increased efficiency of the SPWE. This countermeasure is evaluated by observing SPWE operation at a pressure of 2 MPa, with a visualization of hydrogen bubbles in the cathode channel. The evaluation revealed that supplying water into the cathode channel increases the efficiency by several percent at 0.33 A/cm2. Further, the visualization of the hydrogen bubbles revealed an enhancement in the separation of hydrogen bubbles from the surface of the current supplier. This suggests that additional water flow can increase the hydrogen production efficiency through promoting bubble detachment.

UR - http://www.scopus.com/inward/record.url?scp=84934439179&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84934439179&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2015.03.045

DO - 10.1016/j.ijhydene.2015.03.045

M3 - Article

AN - SCOPUS:84934439179

VL - 40

SP - 5995

EP - 6003

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 18

ER -