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.
Bibliographical noteFunding Information:
This work was supported by the Korean Government through the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by MOTIE (No.20133030011320), the Korea CCS R&D Center (KCRC) grant funded by MSIP (No. 2013M1A8A1038315), the National Research Foundation of Korea Grant funded by MSIP (2014, University-Institute cooperation program), the Global Frontier R&D Program on Center for Multiscale Energy System funded by the National Research Foundation, MSIP (No. 2012M3A6A7054283), and the Basic Science Research Program funded by the National Research Foundation of Korea (NRF), MEST (2014R1A1A2057136). This work was also financially supported by KIST through the Institutional Project.
© 2015 Elsevier B.V.
- Anion exchange membrane water electrolyzer
- Hydrogen evolution reaction
- Pt-decorated Ni electrocatalyst
- Ultra-low Pt loading
ASJC Scopus subject areas
- Environmental Science(all)
- Process Chemistry and Technology