Development of a membrane electrode assembly for alkaline water electrolysis by direct electrodeposition of nickel on carbon papers

Sang Hyun Ahn; Byung Seok Lee; Insoo Choi; Sung Jong Yoo; Hyoung Juhn Kim; Eun Ae Cho; Dirk Henkensmeier; Suk Woo Nam; Soo Kil Kim; Jong Hyun Jang

doi:10.1016/j.apcatb.2014.02.021

Development of a membrane electrode assembly for alkaline water electrolysis by direct electrodeposition of nickel on carbon papers

Sang Hyun Ahn, Byung Seok Lee, Insoo Choi, Sung Jong Yoo, Hyoung Juhn Kim, Eun Ae Cho, Dirk Henkensmeier, Suk Woo Nam, Soo Kil Kim, Jong Hyun Jang

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Abstract

A membrane electrode assembly (MEA) for use in an alkaline water electrolyzer is fabricated by sandwiching an anion exchange membrane (AEM) between two electrodes prepared by the electrodeposition of Ni (used as a catalyst) on carbon papers (CPs) acting as gas diffusion layers. The conditions for Ni electrodepositon are determined on the basis of the results of half-cell tests for hydrogen and oxygen evolution reactions. An MEA fabricated by the direct electrodeposition of an extremely low Ni amount of 8.5μg_Nicm^-2 exhibits a high cell performance of 150mAcm^-2 at 1.9V when a 1.0M KOH solution is supplied to the cathode. Electrodeposited Ni is uniformly distributed on the surface of CP fibers, thereby providing a large electrochemical surface area for gas evolution reactions and thus maintaining high catalyst utilization. It is suggested that control of bubble generation and AEMs with higher ionic conductivity would further increase MEA performance.

Original language	English
Pages (from-to)	197-205
Number of pages	9
Journal	Applied Catalysis B: Environmental
Volume	154-155
DOIs	https://doi.org/10.1016/j.apcatb.2014.02.021
Publication status	Published - 2014 Jul

Bibliographical note

Funding Information:
This work was supported by the Korea CCS R&D Center (KCRC) grant funded by the Korea Government (Ministry of Science, ICT & Future Planning) (No. 2013M1A8A1038315 ).

Keywords

Alkaline water electrolysis
Electrodeposited Ni catalyst
Hydrogen and oxygen evolution reactions
Membrane electrode assembly

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

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10.1016/j.apcatb.2014.02.021

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title = "Development of a membrane electrode assembly for alkaline water electrolysis by direct electrodeposition of nickel on carbon papers",

abstract = "A membrane electrode assembly (MEA) for use in an alkaline water electrolyzer is fabricated by sandwiching an anion exchange membrane (AEM) between two electrodes prepared by the electrodeposition of Ni (used as a catalyst) on carbon papers (CPs) acting as gas diffusion layers. The conditions for Ni electrodepositon are determined on the basis of the results of half-cell tests for hydrogen and oxygen evolution reactions. An MEA fabricated by the direct electrodeposition of an extremely low Ni amount of 8.5μgNicm-2 exhibits a high cell performance of 150mAcm-2 at 1.9V when a 1.0M KOH solution is supplied to the cathode. Electrodeposited Ni is uniformly distributed on the surface of CP fibers, thereby providing a large electrochemical surface area for gas evolution reactions and thus maintaining high catalyst utilization. It is suggested that control of bubble generation and AEMs with higher ionic conductivity would further increase MEA performance.",

keywords = "Alkaline water electrolysis, Electrodeposited Ni catalyst, Hydrogen and oxygen evolution reactions, Membrane electrode assembly",

author = "Ahn, {Sang Hyun} and Lee, {Byung Seok} and Insoo Choi and Yoo, {Sung Jong} and Kim, {Hyoung Juhn} and Cho, {Eun Ae} and Dirk Henkensmeier and Nam, {Suk Woo} and Kim, {Soo Kil} and Jang, {Jong Hyun}",

note = "Funding Information: This work was supported by the Korea CCS R&D Center (KCRC) grant funded by the Korea Government (Ministry of Science, ICT & Future Planning) (No. 2013M1A8A1038315 ).",

year = "2014",

month = jul,

doi = "10.1016/j.apcatb.2014.02.021",

language = "English",

volume = "154-155",

pages = "197--205",

journal = "Applied Catalysis B: Environmental",

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T1 - Development of a membrane electrode assembly for alkaline water electrolysis by direct electrodeposition of nickel on carbon papers

AU - Ahn, Sang Hyun

AU - Lee, Byung Seok

AU - Choi, Insoo

AU - Yoo, Sung Jong

AU - Kim, Hyoung Juhn

AU - Cho, Eun Ae

AU - Henkensmeier, Dirk

AU - Nam, Suk Woo

AU - Kim, Soo Kil

AU - Jang, Jong Hyun

N1 - Funding Information: This work was supported by the Korea CCS R&D Center (KCRC) grant funded by the Korea Government (Ministry of Science, ICT & Future Planning) (No. 2013M1A8A1038315 ).

PY - 2014/7

Y1 - 2014/7

N2 - A membrane electrode assembly (MEA) for use in an alkaline water electrolyzer is fabricated by sandwiching an anion exchange membrane (AEM) between two electrodes prepared by the electrodeposition of Ni (used as a catalyst) on carbon papers (CPs) acting as gas diffusion layers. The conditions for Ni electrodepositon are determined on the basis of the results of half-cell tests for hydrogen and oxygen evolution reactions. An MEA fabricated by the direct electrodeposition of an extremely low Ni amount of 8.5μgNicm-2 exhibits a high cell performance of 150mAcm-2 at 1.9V when a 1.0M KOH solution is supplied to the cathode. Electrodeposited Ni is uniformly distributed on the surface of CP fibers, thereby providing a large electrochemical surface area for gas evolution reactions and thus maintaining high catalyst utilization. It is suggested that control of bubble generation and AEMs with higher ionic conductivity would further increase MEA performance.

AB - A membrane electrode assembly (MEA) for use in an alkaline water electrolyzer is fabricated by sandwiching an anion exchange membrane (AEM) between two electrodes prepared by the electrodeposition of Ni (used as a catalyst) on carbon papers (CPs) acting as gas diffusion layers. The conditions for Ni electrodepositon are determined on the basis of the results of half-cell tests for hydrogen and oxygen evolution reactions. An MEA fabricated by the direct electrodeposition of an extremely low Ni amount of 8.5μgNicm-2 exhibits a high cell performance of 150mAcm-2 at 1.9V when a 1.0M KOH solution is supplied to the cathode. Electrodeposited Ni is uniformly distributed on the surface of CP fibers, thereby providing a large electrochemical surface area for gas evolution reactions and thus maintaining high catalyst utilization. It is suggested that control of bubble generation and AEMs with higher ionic conductivity would further increase MEA performance.

KW - Alkaline water electrolysis

KW - Electrodeposited Ni catalyst

KW - Hydrogen and oxygen evolution reactions

KW - Membrane electrode assembly

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JO - Applied Catalysis B: Environmental

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ER -

Development of a membrane electrode assembly for alkaline water electrolysis by direct electrodeposition of nickel on carbon papers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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