过电位
掺杂剂
材料科学
密度泛函理论
催化作用
空位缺陷
析氧
兴奋剂
化学物理
氧气
电子结构
纳米技术
电化学
物理化学
光电子学
凝聚态物理
计算化学
化学
物理
有机化学
电极
作者
Yuhai Dou,Ding Yuan,Linping Yu,Weiping Zhang,Lei Zhang,Kaicai Fan,Mohammad Al‐Mamun,Porun Liu,Chun‐Ting He,Huijun Zhao
标识
DOI:10.1002/adma.202104667
摘要
Electronic structure engineering via integrating two defect structures with opposite modulation effects holds the key to fully unlocking the power of a catalyst. Herein, an interpolation principle is proposed to activate CoOOH via W doping and Co vacancies for the oxygen evolution reaction. Density functional theory suggests opposite roles for the W dopant and the Co vacancy but a synergy between them in tuning the electronic states of the Co site, leading to near-ideal intermediate energetics and dramatically lowered catalytic overpotential. Experimental studies confirm the modulation of the electronic structure and validate the greatly enhanced catalytic activity with a small overpotential of 298.5 mV to drive 50 mA cm-2 . The discovery of the interpolation between dopants and vacancies opens up a new methodology to design efficient catalysts for various electrochemical reactions.
科研通智能强力驱动
Strongly Powered by AbleSci AI