Abstract: The generation process of hydrogen peroxide in a fuel cell reactor was studied, in which continuously injected KOH aqueous solution was used as electrolyte. The results showed that the cell current, H2O2 concentration and current efficiency were affected by the concentration of KOH aqueous solution and flow rates of H2O, KOH, O2 and H2. When the concentration of KOH was 2 mol/L, the flow rates of H2O, KOH, H2 and O2 were 80 mL/h, 150 mL/h, 20 mL/min and 60 mL/min respectively, high H2O2 productivity (0.225 mol/L) and current efficiency (almost 100%) were obtained from the reactor system, which is expected to be applicable in wastewater treatment.

Key words: alkaline fuel cell, hydrogen peroxide, flow rate, concentration, current efficiency

摘要： 以持续注入的KOH水溶液为电解质，在燃料电池反应器中进行了H2O2合成工艺研究. 结果表明，KOH溶液浓度及流量、H2O, O2和H2流量对电池电流、H2O2浓度和电流效率等均有较大影响. 其中KOH浓度为2 mol/L, H2O, KOH和O2, H2的流量分别为80, 150 mL/h和60, 20 mL/min时，反应体系获得了较高的H2O2产量(0.225 mol/L)和电流效率(接近100%)，可望应用于水中污染物的处理.

关键词: 碱性燃料电池, 过氧化氢, 流量, 浓度, 电流效率