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Voltage-Current Profiles of Hydrogen-Oxygen Mixture Gas at Polymer Electrolyte Interface
차석렬(Suk Yeul Cha),송정민(Jung Min Song),이웅무(Woong Moo Lee) 한국수소및신에너지학회 1996 한국수소 및 신에너지학회논문집 Vol.7 No.2
Voltage-current profiles are measured when hydrogen-oxygen gas is in contact with solid polymer membrane (Nafion<sup>®</sup>) as the electrolyte. The feed gas is prepared by mixing hydrogen and oxygen gas in various ratios. The carbon gas diffusion electrodes contacting the electrolyte are treated by platinum catalyst. The platinum surface is impregnated with a 5% Nafion<sup>®</sup> solution to ensure its good surface contact with the electrolyte. The constant voltage between anode and cathode was applied by a DC power supply. The results on the profiles show that the energy efficiency critically depends on the hydrogen concentration in H₂/O₂ mixture gas.