Anion exchange membrane water electrolyzer with an ultra-low loading of Pt-decorated Ni electrocatalyst
- Authors
- Ahn, Sang Hyun; Yoo, Sung Jong; Kim, Hyoung-Juhn; Henkensmeier, Dirk; Nam, Suk Woo; Kim, Soo-Kil; Jang, Jong Hyun
- Issue Date
- 1월-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Anion exchange membrane water electrolyzer; Hydrogen evolution reaction; Pt-decorated Ni electrocatalyst; Ultra-low Pt loading
- Citation
- APPLIED CATALYSIS B-ENVIRONMENTAL, v.180, pp.674 - 679
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED CATALYSIS B-ENVIRONMENTAL
- Volume
- 180
- Start Page
- 674
- End Page
- 679
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89920
- DOI
- 10.1016/j.apcatb.2015.07.020
- ISSN
- 0926-3373
- Abstract
- The particle-type electrodes with ultra-low electrocatalyst loading (<10 mu g cm(-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% (1.85 mu g(pt) cm(-2)). A membrane electrode assembly employing Pt-Ni/CP-2 as the HER electrode (total catalyst loading: 13.2 mu g cm(-2)) exhibited a current density of 250 mA cm(-2) at 1.9 V-cell (50 degrees C), which is comparable to the previous reports with much larger loading of 3.1 similar to 80 mg cm(-2). (C) 2015 Elsevier B.V. All rights reserved.
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Collections - Graduate School > GREEN SCHOOL (Graduate School of Energy and Environment) > 1. Journal Articles
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