Facile synthesis of ultrafine Ru nanocrystal supported N-doped graphene as an exceptional hydrogen evolution electrocatalyst in both alkaline and acidic media

被引：51
作者：
Barman, Barun Kumar [1 ]
Das, Debanjan [1 ]
Nanda, Karuna Kar [1 ]
机构：
[1] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India
来源：
SUSTAINABLE ENERGY & FUELS | 2017年 / 1卷 / 05期
关键词：
NANOWIRE ARRAYS; ENCAPSULATED N; ONE-STEP; NANOPARTICLES; CARBON; CATALYSTS; EFFICIENT; WATER; PHOSPHIDE; MOS2;
D O I：
10.1039/c7se00153c
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Since hydrogen is a clean and renewable energy source, the design of efficient and new catalysts for hydrogen evolution reaction (HER) has attracted significant attention. Ultrafine (similar to 2 nm) monodispersed Ru nanocrystals on N-doped graphene (Ru@NG) show Pt-like catalytic activity towards HER in both alkaline and acidic media with zero onset potential and better current density as compared to Pt/C. The HER performance strongly depends on the nanosize effect of Ru nanocrystals and their dispersion on NG. Transfer of electrons from Ru to carbon results in an electron-deficient metal centre and greatly enhances the HER activity. This new 4-d transition metal electrocatalyst has the potential to serve as an alternative to the Pt benchmark catalyst, which is more costly than Ru.
引用
收藏
页码：1028 / 1033
页数：6
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