空气电极氧还原过程研究(英文)  

Study of the Oxygen Reduction Process on Air Cathode

作　　者：欧秀芹[1] 梁广川[1] 解飞[1] 范飞[1] 刘曙光[1] 

机构地区：[1]河北工业大学能源与环境材料研究所,天津300131

出　　处：《中山大学学报（自然科学版）》2005年第A02期91-94,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：天津市科技攻关计划资助项目(043102511)

摘　　要：通过测量空气阴极与镍阳极组成的电解析氧装置的氧气产出量,并根据单位时间内气量与电流的关系可定量地计算出氧还原的两种历程在反应中所占的比例。试验结果表明,仅以活性炭为电催化剂的空气电极2电子途径的反应占74 %,以MnO2为催化剂的空气电极,当含量达33 %时, 4电子途径的反应达100 %。此方法可动态研究反应过程中两种氧还原反应随时间的变化。The volume of oxygen generated from the electrolysis bath made up of an air cathode and nickel anode is measured, and the proportion of the two courses, 2e and 4e path oxygen reduction process, can be distinguished quantitatively according to the relation between the gas generation per minute and the current. The results show that the 2e path reaction covers 74% on the air cathode using active carbon as electrocatalyst, while the 4e path reaction covers up to 100% when the percentage of the catalyst MnO2 in the air catalyst layer of air electrode reaches 33%. This method can demonstrate the corresponding changes with time in the two kinds of oxygen reduction reaction.

关 键 词：氧还原 反应历程 空气电极 催化剂 

分 类 号：O646.21[理学—物理化学]