Hydrogen generation system using sodium borohydride for operation of a 400 W-scale polymer electrolyte fuel cell stack

Sun Ja Kim, Jaeyoung Lee, Kyung Yong Kong, Chang Ryul Jung, In Gyu Min, Sang Yeop Lee, Hyoung Juhn Kim, SukWoo Nam, Tae Hoon Lim

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Sodium borohydride (NaBH4) in the presence of sodium hydroxide as a stabilizer is a hydrogen generation source with high hydrogen storage efficiency and stability. It generates hydrogen by self-hydrolysis in aqueous solution. In this work, a Co-B catalyst is prepared on a porous nickel foam support and a system is assembled that can uniformly supply hydrogen at >6.5 L min-1 for 120 min for driving 400-W polymer electrolyte membrane fuel cells (PEMFCs). For optimization of the system, several experimental conditions were changed and their effect investigated. If the concentration of NaBH4 in aqueous solution is increased, the hydrogen generation rate increases, but a high concentration of NaBH4 causes the hydrogen generation rate to decrease because of increased solution viscosity. The hydrogen generation rate is also enhanced when the flow rate of the solution is increased. An integrated system is used to supply hydrogen to a PEMFCs stack, and about 465 W power is produced at a constant loading of 30 A.

Original languageEnglish
Pages (from-to)412-418
Number of pages7
JournalJournal of Power Sources
Volume170
Issue number2
DOIs
Publication statusPublished - 2007 Jul 10
Externally publishedYes

Fingerprint

borohydrides
Electrolytes
fuel cells
Fuel cells
Hydrogen
Polymers
Sodium
sodium
electrolytes
polymers
hydrogen
Proton exchange membrane fuel cells (PEMFC)
Sodium Hydroxide
membranes
aqueous solutions
Hydrogen storage
support systems
sodium borohydride
sodium hydroxides
Nickel

Keywords

  • Co-B catalyst
  • Hydrogen generation
  • Polymer electrolyte fuel cell
  • Sodium borohydride

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Hydrogen generation system using sodium borohydride for operation of a 400 W-scale polymer electrolyte fuel cell stack. / Kim, Sun Ja; Lee, Jaeyoung; Kong, Kyung Yong; Ryul Jung, Chang; Min, In Gyu; Lee, Sang Yeop; Kim, Hyoung Juhn; Nam, SukWoo; Lim, Tae Hoon.

In: Journal of Power Sources, Vol. 170, No. 2, 10.07.2007, p. 412-418.

Research output: Contribution to journalArticle

Kim, SJ, Lee, J, Kong, KY, Ryul Jung, C, Min, IG, Lee, SY, Kim, HJ, Nam, S & Lim, TH 2007, 'Hydrogen generation system using sodium borohydride for operation of a 400 W-scale polymer electrolyte fuel cell stack', Journal of Power Sources, vol. 170, no. 2, pp. 412-418. https://doi.org/10.1016/j.jpowsour.2007.03.083
Kim, Sun Ja ; Lee, Jaeyoung ; Kong, Kyung Yong ; Ryul Jung, Chang ; Min, In Gyu ; Lee, Sang Yeop ; Kim, Hyoung Juhn ; Nam, SukWoo ; Lim, Tae Hoon. / Hydrogen generation system using sodium borohydride for operation of a 400 W-scale polymer electrolyte fuel cell stack. In: Journal of Power Sources. 2007 ; Vol. 170, No. 2. pp. 412-418.
@article{03498b85ee6b44538ba97f81646ef908,
title = "Hydrogen generation system using sodium borohydride for operation of a 400 W-scale polymer electrolyte fuel cell stack",
abstract = "Sodium borohydride (NaBH4) in the presence of sodium hydroxide as a stabilizer is a hydrogen generation source with high hydrogen storage efficiency and stability. It generates hydrogen by self-hydrolysis in aqueous solution. In this work, a Co-B catalyst is prepared on a porous nickel foam support and a system is assembled that can uniformly supply hydrogen at >6.5 L min-1 for 120 min for driving 400-W polymer electrolyte membrane fuel cells (PEMFCs). For optimization of the system, several experimental conditions were changed and their effect investigated. If the concentration of NaBH4 in aqueous solution is increased, the hydrogen generation rate increases, but a high concentration of NaBH4 causes the hydrogen generation rate to decrease because of increased solution viscosity. The hydrogen generation rate is also enhanced when the flow rate of the solution is increased. An integrated system is used to supply hydrogen to a PEMFCs stack, and about 465 W power is produced at a constant loading of 30 A.",
keywords = "Co-B catalyst, Hydrogen generation, Polymer electrolyte fuel cell, Sodium borohydride",
author = "Kim, {Sun Ja} and Jaeyoung Lee and Kong, {Kyung Yong} and {Ryul Jung}, Chang and Min, {In Gyu} and Lee, {Sang Yeop} and Kim, {Hyoung Juhn} and SukWoo Nam and Lim, {Tae Hoon}",
year = "2007",
month = "7",
day = "10",
doi = "10.1016/j.jpowsour.2007.03.083",
language = "English",
volume = "170",
pages = "412--418",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Hydrogen generation system using sodium borohydride for operation of a 400 W-scale polymer electrolyte fuel cell stack

AU - Kim, Sun Ja

AU - Lee, Jaeyoung

AU - Kong, Kyung Yong

AU - Ryul Jung, Chang

AU - Min, In Gyu

AU - Lee, Sang Yeop

AU - Kim, Hyoung Juhn

AU - Nam, SukWoo

AU - Lim, Tae Hoon

PY - 2007/7/10

Y1 - 2007/7/10

N2 - Sodium borohydride (NaBH4) in the presence of sodium hydroxide as a stabilizer is a hydrogen generation source with high hydrogen storage efficiency and stability. It generates hydrogen by self-hydrolysis in aqueous solution. In this work, a Co-B catalyst is prepared on a porous nickel foam support and a system is assembled that can uniformly supply hydrogen at >6.5 L min-1 for 120 min for driving 400-W polymer electrolyte membrane fuel cells (PEMFCs). For optimization of the system, several experimental conditions were changed and their effect investigated. If the concentration of NaBH4 in aqueous solution is increased, the hydrogen generation rate increases, but a high concentration of NaBH4 causes the hydrogen generation rate to decrease because of increased solution viscosity. The hydrogen generation rate is also enhanced when the flow rate of the solution is increased. An integrated system is used to supply hydrogen to a PEMFCs stack, and about 465 W power is produced at a constant loading of 30 A.

AB - Sodium borohydride (NaBH4) in the presence of sodium hydroxide as a stabilizer is a hydrogen generation source with high hydrogen storage efficiency and stability. It generates hydrogen by self-hydrolysis in aqueous solution. In this work, a Co-B catalyst is prepared on a porous nickel foam support and a system is assembled that can uniformly supply hydrogen at >6.5 L min-1 for 120 min for driving 400-W polymer electrolyte membrane fuel cells (PEMFCs). For optimization of the system, several experimental conditions were changed and their effect investigated. If the concentration of NaBH4 in aqueous solution is increased, the hydrogen generation rate increases, but a high concentration of NaBH4 causes the hydrogen generation rate to decrease because of increased solution viscosity. The hydrogen generation rate is also enhanced when the flow rate of the solution is increased. An integrated system is used to supply hydrogen to a PEMFCs stack, and about 465 W power is produced at a constant loading of 30 A.

KW - Co-B catalyst

KW - Hydrogen generation

KW - Polymer electrolyte fuel cell

KW - Sodium borohydride

UR - http://www.scopus.com/inward/record.url?scp=34249867182&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34249867182&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2007.03.083

DO - 10.1016/j.jpowsour.2007.03.083

M3 - Article

AN - SCOPUS:34249867182

VL - 170

SP - 412

EP - 418

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 2

ER -