Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7712406 | International Journal of Hydrogen Energy | 2016 | 8 Pages |
Abstract
The hydrogen evolution reaction (HER) on the stainless steel electrode in MnSO4-(NH4)2SO4 solution (MA solution) with and without SeO2 was studied by the linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS) and chronoamperometry. It was found that SeO2 could effectively inhibit HER, but the control step of HER was not changed. The apparent activation energy of HER was increased from 50.56 kJ molâ1 to 58.83 kJ molâ1 after adding 9.0 Ã 10â4 mol Lâ1 SeO2. The charge transfer resistance of HER was also increased. The inhibitory process of SeO2 on HER could be explained as follows: Se (IV) was reduced to Se (0), the morphology and composition of electrode surface were changed evidently by the deposition of selenium. The results of SEM and XRD further indicate that the explanation of inhibitory process of SeO2 on HER in MA solution is reasonable.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Pengpeng Jiao, Fuyuan Xu, Jianhui Li, Ning Duan, Guanyi Chen, Linhua Jiang,