Direct fabrication of gas diffusion cathode by pulse electrodeposition for proton exchange membrane water electrolysis
- Direct fabrication of gas diffusion cathode by pulse electrodeposition for proton exchange membrane water electrolysis
- 장종현; Hyanjoo Park; Seunghoe Choe; Hoyoung Kim; Dong-Kwon Kim; GeonHee Cho; YoonSu Park; Don-Hyun Ha; Sang Hyun Ahn; Soo-Kil Kim
- Issue Date
- Applied surface science
- VOL 444-311
- Pt catalysts for water electrolysis were prepared on carbon paper by using both direct current and pulse electrodeposition. Controlling the mass transfer of Pt precursor in the electrolyte by varying the deposition potential enables the formation of various Pt particle shapes such as flower-like and polyhedral particles. Further control of the deposition parameters for pulse electrodeposition resulted in changes to the particle size and density. In particular, the upper potential of pulse was found to be the critical parameter controlling the morphology of the particles and their catalytic activity. In addition to the typical electrochemical measurements, Pt samples deposited on carbon paper were used as cathodes for a proton exchange membrane water electrolyser. This single cell test revealed that our Pt particle samples have exceptional mass activity while being cost effective.
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