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

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The particle-type electrodes with ultra-low electrocatalyst loading (<10μgcm<sup>-2</sup>) 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<sup>-2</sup>). A membrane electrode assembly employing Pt-Ni/CP-2 as the HER electrode (total catalyst loading: 13.2μgcm<sup>-2</sup>) exhibited a current density of 250mAcm<sup>-2</sup> at 1.9V<inf>cell</inf> (50°C), which is comparable to the previous reports with much larger loading of 3.1~80mgcm<sup>-2</sup>.

Original languageEnglish
Pages (from-to)674-679
Number of pages6
JournalApplied Catalysis B: Environmental
Volume180
DOIs
Publication statusPublished - 2016

Fingerprint

Electrocatalysts
Anions
ion exchange
Ion exchange
electrode
Negative ions
membrane
Membranes
Electrodes
Water
Hydrogen
hydrogen
Electrodeposition
water
Cathodes
Current density
Carbon
catalyst
Catalysts
carbon

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)

Cite this

Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst. / Ahn, Sang Hyun; Yoo, Sung Jong; Kim, Hyoung Juhn; Henkensmeier, Dirk; Nam, SukWoo; Kim, Soo Kil; Jang, Jong Hyun.

In: Applied Catalysis B: Environmental, Vol. 180, 2016, p. 674-679.

Research output: Contribution to journalArticle

Ahn, Sang Hyun ; Yoo, Sung Jong ; Kim, Hyoung Juhn ; Henkensmeier, Dirk ; Nam, SukWoo ; Kim, Soo Kil ; Jang, Jong Hyun. / Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst. In: Applied Catalysis B: Environmental. 2016 ; Vol. 180. pp. 674-679.
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AU - Nam, SukWoo

AU - Kim, Soo Kil

AU - Jang, Jong Hyun

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