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.
Original language | English |
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Pages (from-to) | 674-679 |
Number of pages | 6 |
Journal | Applied Catalysis B: Environmental |
Volume | 180 |
DOIs | |
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
- Environmental Science(all)
- Process Chemistry and Technology