Understanding the oxophilic effect on the hydrogen electrode reaction through PtM nanostructures

被引：16

作者：

Campos-Roldan, C. A. ^{[1
]}

Alonso-Vante, N. ^{[1
]}

机构：

[1] Univ Poitiers, IC2MP, UMR CNRS 7285, 4 Rue Michel Brunet, F-86022 Poitiers, France

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2021年 / 25卷 / 01期

关键词：

Hydrogen evolution; oxidation reaction; Alkaline medium; Pt-based materials; Bifunctional electrocatalyst; OXYGEN REDUCTION REACTION; OXIDATION REACTION; PLATINUM NANOPARTICLES; ADSORPTION PROPERTIES; ALKALINE ELECTROLYTE; EVOLUTION; ELECTROCATALYSTS; COADSORPTION; KINETICS; ENERGY;

D O I：

10.1007/s10008-020-04719-7

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon-supported PtM nanostructured materials (M = Cr, Co, Ni, Cu, Mo, Y, Sm, Gd) were investigated for the hydrogen evolution/oxidation reactions (HER/HOR) in alkaline medium. All catalysts were synthesized by the carbonyl complex chemical route. Among PtM, Cr, Co, Ni, and Cu formed nanoalloys. M2O3 was generated with Y, Sm, and Gd, and Mo was found at a dopant concentration of Pt. The electrochemical results showed that the HER/HOR activities on PtNi/C and PtCo/C outperformed that of the Pt/C benchmark. The presence of OHad (s)species, acting as a bifunctional mechanism, favored the HER/HOR activity on PtNi/C and PtCo/C. This process is concomitant with early DFT studies that concluded that the presence of OHads weakens the H-ads and H2Oads energetics.

引用

页码：187 / 194

页数：8

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