Atomically dispersed ruthenium in carbon aerogels as effective catalysts for pH-universal hydrogen evolution reaction

被引：51

作者：

He, Ting ^{[1
,2
]}

Song, Yaya ^{[1
]}

Chen, Yang ^{[1
]}

Song, Xianwen ^{[1
]}

Lu, Bingzhang ^{[3
]}

Liu, Qiming ^{[3
]}

Liu, Hongtao ^{[1
]}

Zhang, Yi ^{[1
,4
]}

Ouyang, Xiaoping ^{[2
]}

Chen, Shaowei ^{[3
]}

机构：

[1] Cent South Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Micro & Nano Mat Interface Sci, Changsha 410083, Peoples R China

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

[3] Univ Calif, Dept Chem & Biochem, 1156 High St, Santa Cruz, CA 95064 USA

[4] Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Zhengzhou 450002, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 442卷

基金：

国家重点研发计划; 中国国家自然科学基金; 美国国家科学基金会;

关键词：

Atomically dispersed ruthenium; Carbon aerogel; Hydrogen evolution reaction; Water splitting; pH-universal catalyst; OXYGEN REDUCTION REACTION; NITROGEN-DOPED GRAPHENE; EFFICIENT; NANOPARTICLES; PERFORMANCE; SITES; ATOMS; ELECTROCATALYSTS; CLUSTERS;

D O I：

10.1016/j.cej.2022.136337

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Development of cost-effective catalysts for hydrogen evolution reaction (HER) plays a significant role in scalable production of hydrogen. Herein, carbon aerogels doped with atomically isolated Ru are produced pyrolytically from biomass hydrogels and exhibit a remarkable performance in HER within a broad range of solution pH, due to the formation of abundant RuNx moieties. At the current density of 10 mA cm(-2), the optimal sample (NCAG/Ru-3) exhibits an ultralow overpotential of merely -4 mV in 1.0 M KOH, -45 mV in 1.0 M phosphate buffer solution and -65 mV in 0.5 M H2SO4, with the respective mass activity 44, 16 and 6 times that of commercial Pt/C benchmark. The excellent performance is also manifested in full water splitting. Theoretical calculations suggest that the high activity arise from the RuNx sites at the zigzag edges and nanowrinkles. These results underscore the unique quality of carbon aerogel-based single atom catalysts in electrochemical energy technologies.

引用

页数：9

共 66 条

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