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; Suk Woo Nam; Tae Hoon Lim

doi:10.1016/j.jpowsour.2007.03.083

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, Suk Woo Nam, Tae Hoon Lim

GREEN SCHOOL (Graduate School of Energy and Environment)

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

73 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 language	English
Pages (from-to)	412-418
Number of pages	7
Journal	Journal of Power Sources
Volume	170
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2007.03.083
Publication status	Published - 2007 Jul 10

Bibliographical note

Funding Information:
This research was supported by the Hydrogen Energy R&D Center, one of the 21st Century Frontier R&D Program, funded by the Ministry of Science and Technology of Korea.

Keywords

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

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

Access to Document

10.1016/j.jpowsour.2007.03.083

Cite this

@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 Nam, {Suk Woo} and Lim, {Tae Hoon}",

note = "Funding Information: This research was supported by the Hydrogen Energy R&D Center, one of the 21st Century Frontier R&D Program, funded by the Ministry of Science and Technology of Korea. ",

year = "2007",

month = jul,

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, Suk Woo

AU - Lim, Tae Hoon

N1 - Funding Information: This research was supported by the Hydrogen Energy R&D Center, one of the 21st Century Frontier R&D Program, funded by the Ministry of Science and Technology of Korea.

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

U2 - 10.1016/j.jpowsour.2007.03.083

DO - 10.1016/j.jpowsour.2007.03.083

M3 - Article

AN - SCOPUS:34249867182

SN - 0378-7753

VL - 170

SP - 412

EP - 418

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this