한국표면공학회지 (Journal of the Korean institute of surface engineering)
- 제24권3호
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- Pages.162-168
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- 1991
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- 1225-8024(pISSN)
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- 2288-8403(eISSN)
인산형 연료전지용 다공성 박막의 표면 다공도에 관한 연구
Study on the surface porosity of porous thin layer electrode for phosphoric acid fuel cell
초록
Gas diffusion and electrolyte penetration in wetproofed gas diffusion electrodes were studied using layers of PTFE- bonded carbon. Minor variations in fabrication and testing procedures resulted in very large variations in catalyst layer wetting characteristics and permiability for reaction gas. By controlling the pore size of gas diffusion electrode carefully by varing the PTFE contents, baking temperature, baking time and ammonium bicarbonate as additive, the primary pore was decreased and the secondary pore was increased and so more reaction gas through the primary pore could be reacted at catalyst agglomertes in the secondary pore. And the cathode current density was increased to more than 400mA.
키워드