摘要
Oxygen reduction on Teflon-bonded carbon gas diffusion electrode without cataly st in 6 mol/L KOH solution was investigated with acimpedance spectroscopy and o ther electrochemical techniques. The kinetic parameters were measured with an ex change current density of J0=3.44×10-9 and a Tafel slope of 46 mV/ dec in low overpotential range （-0.05-0.14 V vs SCE）,which are compara ble with those reported on carbon supported platinum electrode. The reaction mec hanism of OR and the active effect of carbon black were examined.
Oxygen reduction on Teflon-bonded carbon gas diffusion electrode without cataly st in 6 mol/L KOH solution was investigated with acimpedance spectroscopy and o ther electrochemical techniques. The kinetic parameters were measured with an ex change current density of J^0=3.44×10^(-9) and a Tafel slope of 46 mV/ dec in low overpotential range (-0.05-0.14 V vs SCE),which are compara ble with those reported on carbon supported platinum electrode. The reaction mec hanism of OR and the active effect of carbon black were examined.
出处
《中国有色金属学会会刊：英文版》
CSCD
2004年第4期817-823,共7页
Transactions of Nonferrous Metals Society of China
