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 OH_ads 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 OH_ads weakens the H_ads and H₂O_ads energetics.

Graphical abstract

研究了碳载PtM纳米结构材料（M = Cr，Co，Ni，Cu，Mo，Y，Sm，Gd）在碱性介质中的析氢/氧化反应（HER / HOR）。所有催化剂均通过羰基络合物化学路线合成。在PtM中，Cr，Co，Ni和Cu形成了纳米合金。Y，Sm和Gd生成M ₂ O ₃，并且Mo的掺杂浓度为Pt。电化学结果表明，HER / HOR在PtNi / C和PtCo / C上的活性优于Pt / C基准。OH _ads物种的存在，作为一种双功能机制，有利于HER / HOR对PtNi / C和PtCo / C的活性。此过程与早期DFT研究相伴随，该研究得出结论，OH_广告的存在会削弱H_广告和H ₂ O_广告的能量学。

图形概要