期刊
RSC ADVANCES
卷 8, 期 63, 页码 36313-36322出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra07754a
关键词
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资金
- Korea Electric Power Corporation [R18XA06-33]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2016R1D1A3B03934752]
- Korea Electric Power Corporation (KEPCO) [R16EA01]
- Daewoo Shipbuilding & Marine Engineering Co., Ltd. (DSME)
The large-area membrane-electrode assembly (MEA) has been fabricated using the decal transfer method with a methanol (MeOH)-based PtRu/C catalyst slurry. The stability of slurry dispersion is important when using a large-area decal transfer method to ensure the integrity of the electrode. In order to prepare stable and well dispersed catalyst slurry, a suitable solvent for the PtRu/C catalyst should be selected. We considered the physical properties of various organic solvents, including ionomer solubility, dielectric constant, and catalyst particle surface physical properties. We found that the MeOH-based PtRu/C slurry dispersion showed the best stability and dispersibility of catalyst-ionomer agglomerates. It was also confirmed that the MeOH-based slurry has the most suitable characteristics for coating the slurry on the substrate film. The decal technique-based MEA using this slurry showed excellent performance when compared with the spray method-based MEA. Furthermore, the large-area PtRu/C MEA with an active area of 51.84 cm(2) was fabricated and excellent performance was realized even when a reforming gas was used.
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