过电位
催化作用
电子
原子轨道
化学
金属间化合物
过渡金属
解吸
氢
吸附
化学物理
材料科学
物理化学
物理
电化学
合金
有机化学
电极
量子力学
作者
Shijie Shen,Huanhuan Zhang,Kai Song,Zongpeng Wang,Tongtong Shang,Ang Gao,Qinghua Zhang,Lin Gu,Wenwu Zhong
标识
DOI:10.1002/ange.202315340
摘要
Abstract Despite the fact that d‐band center theory links the d electron structure of transition metals to their catalytic activity, it is yet unknown how the synergistic effect of multi‐d electrons impacts catalytic performance. Herein, novel LaNi 1‐x Co x Ru intermetallics containing 5d, 4d, and 3d electrons were prepared. In these compounds, the 5d orbital of La transfers electrons to the 4d orbital of Ru, which provides adsorption sites for H*. The 3d orbitals of Ni and Co interact with the 5d and 4d orbitals to generate an anisotropic electron distribution, which facilitates the adsorption and desorption of OH*. The synergistic effect of multi‐d electrons ensures efficient catalytic activity. The optimized LaNi 0.5 Co 0.5 Ru has an overpotential of 43mV at 10 mA cm −2 for alkaline electrocatalytic hydrogen evolution reaction. Beyond offering a variety of new electrocatalysts, this work reveals the multi‐d electron synergy in promoting catalytic reaction.
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