杂原子
空位缺陷
兴奋剂
插层(化学)
石墨烯
原子轨道
材料科学
化学
结晶学
化学物理
无机化学
纳米技术
光电子学
有机化学
戒指(化学)
电子
物理
量子力学
作者
Wen‐De Zhong,Zongpeng Wang,Nan Gao,Lican Huang,Zhiping Lin,Yanping Liu,Fanqi Meng,Jun Deng,Shifeng Jin,Qinghua Zhang,Lin Gu
标识
DOI:10.1002/anie.202011378
摘要
Abstract Vacancy engineering plays vital role in the design of high‐performance electrocatalysts. Here, we introduced coupled cation‐vacancy pairs in Ni‐doped CoSe to achieve boosted hydrogen evolution reaction (HER) activity through a facile topochemical intercalation approach. Adjacent Co vacancy pairs and heteroatom Ni doping contribute together for the upshift of the Se 4p z orbital, which induces larger overlap between the Se 4p and H 1s orbitals. As a result, the free energy of H adsorption can be lowered significantly. With an advanced HER activity of 185.7 mV at 10 mA cm −2 , this work provides new direction and guidance for the design of novel electrocatalysts.
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