用时间分辨石英晶体微天平（ Time-resolved EQCM）、循环伏安法及电化学阶跃技术，研究了铂电极上甲酸的吸附氧化过程 .结果表明，在活性吸附氧化过程中，甲酸吸附后迅速失去一个电子形成 COOHad单分子层，在阶跃电势计时电流图上得到一个氧化电流峰及 EQCM图上一个相应的质量增加，随后的 COOHad氧化是一个速率较慢的过程，当它的吸附达到稳态以后，甲酸氧化反应在计时电流图上表现为稳态小电流及相应的 EQCM质量平阶 .因而可以将不同的反应步骤归属于不同的阶段 .并由此得到了不同电势下 COOHad氧化的电化学反应速率常数，并求出 COOHad进一步电化学氧化步骤的电子传递系数β =0.191. The time-resolved EQCM, cyclic voltammetry and electrochemical step-by-step techniques were used to study the adsorption and oxidation of formic acid on Pt electrode. The results showed that during the adsorption and oxidation of formic acid, The loss of an electron to form a COOHad monolayer results in an oxidation current peak on the step potentiometer and a corresponding increase in mass on the EQCM plot. Subsequent COOHad oxidation is a slower process and when its adsorption reaches a steady After the formic acid oxidation reaction in the chronoamperometry showed a steady state small current and the corresponding EQCM mass level.Thus different reaction steps can be attributed to different stages and thus obtained at different potentials COOHad oxidation of electricity Chemical reaction rate constant, and found the COOHad further electrochemical oxidation step electron transfer coefficient β = 0.191.