电催化剂
材料科学
纳米结构
金属
过渡金属
纳米技术
电子转移
吸附
催化作用
氢
化学工程
无机化学
电化学
化学
光化学
电极
物理化学
有机化学
冶金
工程类
作者
Lan Hui,Yurui Xue,Yuxin Liu,Yuliang Li
出处
期刊:Small
[Wiley]
日期:2021-03-05
卷期号:17 (48)
被引量:35
标识
DOI:10.1002/smll.202006136
摘要
Self-active metal-free graphdiyne (GDY) is used, which has a precise chemical structure, as a model carbon-based metal-free electrocatalyst to assess its activity in the hydrogen evolution reaction (HER) and to understand the origin of electrocatalytic performance at the atomic level. The studies reveal that the unusual electrocatalytic properties of GDY originate from its unique nanostructure, which can simultaneously provide highly active sites for hydrogen adsorption and facilitate the electron-transfer process for proton reduction. Accordingly, GDY can act as a metal-free efficient HER electrocatalyst with Pt-like HER activity, but with long-term durability superior to that of Pt/C under the wide pH range (from acidic to basic). To the best of knowledge, such HER performance is better than that of other reported metal-free electrocatalysts and most transition-metal electrocatalysts-even Pt-based ones.
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