MnO2;
Rotating ring-disk electrode;
Cathodic reduction of MnO2;
D O I:
10.3866/PKU.WHXB19960512
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The cathodic reduction mechanism of MnO2 electrode is studied by means of the rotating ring-disk electrode The mass tran sport process in the solution plays an important role in the reduction process of MnO2 electrode. The relation between I-n(-1) and omega(-1/2) is deduced as a diagnostic criterion of the reduction mechanism. The dissolution precipitation and the electron proton mechanism occur simultaneously but the relative contributions are quite different in various pH value solutions.