Highly stable single Pt atomic sites anchored on aniline-stacked graphene for hydrogen evolution reaction

被引：452

作者：

Ye, Shenghua ^{[1
]}

Luo, Feiyan ^{[1
]}

Zhang, Qianling ^{[1
]}

Zhang, Pingyu ^{[1
]}

Xu, Tingting ^{[1
]}

Wang, Qi ^{[3
]}

He, Dongsheng ^{[5
]}

Guo, Licheng ^{[1
]}

Zhang, Yu ^{[1
]}

He, Chuanxin ^{[1
]}

Ouyang, Xiaoping ^{[4
]}

Gu, Meng ^{[3
]}

Liu, Jianhong ^{[1
]}

Sun, Xueliang ^{[2
]}

机构：

[1] Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China

[2] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

[3] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

[4] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Peoples R China

[5] South Univ Sci & Technol China, Mat Characterizat & Preparat Ctr, Shenzhen 518055, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2019年 / 12卷 / 03期

关键词：

ENHANCED ELECTROCATALYTIC ACTIVITY; N-DOPED CARBON; EFFICIENT ELECTROCATALYST; ULTRATHIN NANOSHEETS; CATALYTIC-ACTIVITY; SUPPORTED SINGLE; POROUS CARBON; CO OXIDATION; OXYGEN; DESIGN;

D O I：

10.1039/c8ee02888e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Developing efficient and cost-effective electrocatalysts for hydrogen evolution reaction (HER) is highly desired for the hydrogen economy. In this study, we developed a facile microwave reduction method to synthesize single Pt atoms anchored on aniline-stacked graphene (Pt SASs/AG) with outstanding HER performance. Pt SASs/AG presents excellent HER activity with = 12 mV at 10 mA cm(-2) and a mass current density of 22400 Ag-Pt(-1) at = 50 mV, which is 46 times higher than that of commercial 20 wt% Pt/C. Moreover, the Pt SASs/AG catalyst is highly active and more stable than Pt/C. X-ray absorption fine spectroscopy and density functional theory calculations demonstrated that the coordination of atomically isolated Pt with the nitrogen of aniline optimized the electronic structure of Pt and the hydrogen adsorption energy, eventually promoting HER activity. This study provides a new avenue for the development of single-atom Pt electrocatalysts with high activity and stability.

引用

页码：1000 / 1007

页数：8

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