钌
材料科学
催化作用
金属
合理设计
电催化剂
化学工程
纳米技术
电化学
冶金
物理化学
电极
化学
有机化学
工程类
作者
Qiuju Li,Xu Zou,Xuan Ai,Hui Chen,Lei Sun,Xiaoxin Zou
标识
DOI:10.1002/aenm.201803369
摘要
Abstract Understanding of catalytic trends is an important prerequisite for providing rational guidance toward the prediction of advanced catalysts as well as the development of original materials design principles. A combined theoretical and experimental study that reveals the periodic trends in electrocatalytic activity for the hydrogen evolution reaction (HER) from Group IV B to Group VIII metal diborides is reported here. Theoretical results demonstrate a general linear relationship between the catalytic activity and d ‐band center of metal diboride, meaning that the latter can serve as a descriptor of activity. And theoretical results also predict ruthenium diboride as the most competitive, nonplatinum candidate among metal diborides for HER because this material has a suitable d ‐band center and a high density of efficient active sites. Furthermore, the experimental results validate the theoretical activity trends and identify ruthenium diboride as an efficient, pH‐universal electrocatalyst with Pt‐like activity for HER under both acidic and alkaline media.
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