Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst

Sang Hyun Ahn; Sung Jong Yoo; Hyoung Juhn Kim; Dirk Henkensmeier; SukWoo Nam; Soo Kil Kim; Jong Hyun Jang

doi:10.1016/j.apcatb.2015.07.020

Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst

Sang Hyun Ahn, Sung Jong Yoo, Hyoung Juhn Kim, Dirk Henkensmeier, SukWoo Nam, Soo Kil Kim, Jong Hyun Jang

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article

22 Citations (Scopus)

Abstract

The particle-type electrodes with ultra-low electrocatalyst loading (<10μgcm-2) were developed as cathodes in the anion exchange membrane water electrolyzer (AEMWE). The Pt-decorated Ni electrocatalysts were prepared on the surface of carbon paper by Ni electrodeposition and subsequent displacement of Ni by Pt; the composition and morphology were controlled by varying HCl concentration. In half cell test, the increase of hydrogen evolution reaction (HER) activity by Pt decoration was confirmed for Pt-Ni/CP-2 that has Pt ratio of 39.4% (1.85μg<inf>Pt</inf>cm-2). A membrane electrode assembly employing Pt-Ni/CP-2 as the HER electrode (total catalyst loading: 13.2μgcm-2) exhibited a current density of 250mAcm-2 at 1.9V<inf>cell</inf> (50°C), which is comparable to the previous reports with much larger loading of 3.1~80mgcm-2.

Original language	English
Pages (from-to)	674-679
Number of pages	6
Journal	Applied Catalysis B: Environmental
Volume	180
DOIs	https://doi.org/10.1016/j.apcatb.2015.07.020
Publication status	Published - 2016

Keywords

Anion exchange membrane water electrolyzer
Hydrogen evolution reaction
Pt-decorated Ni electrocatalyst
Ultra-low Pt loading

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
Environmental Science(all)

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Ahn, S. H., Yoo, S. J., Kim, H. J., Henkensmeier, D., Nam, S., Kim, S. K., & Jang, J. H. (2016). Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst. Applied Catalysis B: Environmental, 180, 674-679. https://doi.org/10.1016/j.apcatb.2015.07.020

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title = "Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst",

abstract = "The particle-type electrodes with ultra-low electrocatalyst loading (<10μgcm-2) were developed as cathodes in the anion exchange membrane water electrolyzer (AEMWE). The Pt-decorated Ni electrocatalysts were prepared on the surface of carbon paper by Ni electrodeposition and subsequent displacement of Ni by Pt; the composition and morphology were controlled by varying HCl concentration. In half cell test, the increase of hydrogen evolution reaction (HER) activity by Pt decoration was confirmed for Pt-Ni/CP-2 that has Pt ratio of 39.4% (1.85μgPtcm-2). A membrane electrode assembly employing Pt-Ni/CP-2 as the HER electrode (total catalyst loading: 13.2μgcm-2) exhibited a current density of 250mAcm-2 at 1.9Vcell (50°C), which is comparable to the previous reports with much larger loading of 3.1~80mgcm-2.",

keywords = "Anion exchange membrane water electrolyzer, Hydrogen evolution reaction, Pt-decorated Ni electrocatalyst, Ultra-low Pt loading",

author = "Ahn, {Sang Hyun} and Yoo, {Sung Jong} and Kim, {Hyoung Juhn} and Dirk Henkensmeier and SukWoo Nam and Kim, {Soo Kil} and Jang, {Jong Hyun}",

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AU - Ahn, Sang Hyun

AU - Yoo, Sung Jong

AU - Kim, Hyoung Juhn

AU - Henkensmeier, Dirk

AU - Nam, SukWoo

AU - Kim, Soo Kil

AU - Jang, Jong Hyun

PY - 2016

Y1 - 2016

N2 - The particle-type electrodes with ultra-low electrocatalyst loading (<10μgcm-2) were developed as cathodes in the anion exchange membrane water electrolyzer (AEMWE). The Pt-decorated Ni electrocatalysts were prepared on the surface of carbon paper by Ni electrodeposition and subsequent displacement of Ni by Pt; the composition and morphology were controlled by varying HCl concentration. In half cell test, the increase of hydrogen evolution reaction (HER) activity by Pt decoration was confirmed for Pt-Ni/CP-2 that has Pt ratio of 39.4% (1.85μgPtcm-2). A membrane electrode assembly employing Pt-Ni/CP-2 as the HER electrode (total catalyst loading: 13.2μgcm-2) exhibited a current density of 250mAcm-2 at 1.9Vcell (50°C), which is comparable to the previous reports with much larger loading of 3.1~80mgcm-2.

AB - The particle-type electrodes with ultra-low electrocatalyst loading (<10μgcm-2) were developed as cathodes in the anion exchange membrane water electrolyzer (AEMWE). The Pt-decorated Ni electrocatalysts were prepared on the surface of carbon paper by Ni electrodeposition and subsequent displacement of Ni by Pt; the composition and morphology were controlled by varying HCl concentration. In half cell test, the increase of hydrogen evolution reaction (HER) activity by Pt decoration was confirmed for Pt-Ni/CP-2 that has Pt ratio of 39.4% (1.85μgPtcm-2). A membrane electrode assembly employing Pt-Ni/CP-2 as the HER electrode (total catalyst loading: 13.2μgcm-2) exhibited a current density of 250mAcm-2 at 1.9Vcell (50°C), which is comparable to the previous reports with much larger loading of 3.1~80mgcm-2.

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KW - Ultra-low Pt loading

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