Electrolytic reduction of oxygen at solid electrodes in aprotic solvents-the superoxide ion
Electrolytic reduction of oxygen at solid electrodes in aprotic solvents-the superoxide ion
复制标题
非质子溶剂中固体电极上氧的电解还原——超氧离子
DOI：
10.1016/0013-4686(82)85071-8
复制
发表时间：
1982
影响因子：
6.6
通讯作者：
S. Lal
中科院分区：
文献类型：
--
作者：
P. S. Jain;S. Lal
研究了以四丁基六氟磷酸铵为支持电解质，DMF和乙腈为溶剂，在玻碳、铑、钯、铅和钨电极上氧还原为超氧阴离子的循环伏安行为。在玻碳电极上，第一步还原为超氧离子的反应接近可逆，平均速率常数为2.2 × 10−2cms− 1，而在铑和钯电极上，该行为是不可逆的，在阳极扫描上显示出高的阴极电流，这可能是由于超氧离子在这些电极上的表面不成比例引起的。在铅和钨电极一个不可逆的还原步骤中观察到的非质子溶剂。
Cyclic voltammetric behavior of oxygen reduction to superoxide ion in DMF and CH3CN in presence of tetrabutyl ammonium hexafluorophosphate as supporting electrolyte at glassy carbon, rhodium, palladium, lead and tungsten electrodes was investigated. The first reduction step to superoxide ion was found to approach reversibility with an average rate constant of 2.2 × 10−2cms−1at the glassy carbon electrode whereas at rhodium and palladium, the behavior was irreversible exhibiting high cathodic currents on the anodic scans which presumably is caused due to surface disproportion of superoxide ion at these electrodes. At lead and tungsten electrodes one irreversible reduction step was observed in both aprotic solvents.