کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
192488 | 459743 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electronic interactions decreasing the activation barrier for the hydrogen electro-oxidation reaction Electronic interactions decreasing the activation barrier for the hydrogen electro-oxidation reaction](/preview/png/192488.png)
A unified model for electrochemical electron transfer reactions which explicitly accounts for the electronic structure of the electrode recently proposed by us is applied to the hydrogen oxidation reaction at different metal electrocatalysts. We focus on the changes produced in the transition state (saddle point) as a consequence of the interactions with d-bands. We discuss different empirical correlations between properties of the metal and catalytic activity proposed in the past. We show which role is played by the band structure of the different metals and its interaction with the molecule for decreasing the activation barrier. Finally, we demonstrate why some metals are better electrocatalysts for the hydrogen electro-oxidation reaction than others.
Journal: Electrochimica Acta - Volume 53, Issue 21, 1 September 2008, Pages 6149–6156