Tuning the interfacial electronic coupling of NiO via CeO2 and nitrogen co-decoration for highly efficient oxygen evolution reaction

被引:42
|
作者
Yang, Fan [1 ]
Zhang, Xidong [2 ]
Zhou, Lijun [1 ]
Lin, Shiwei [2 ]
Cao, Xianshuo [1 ]
Jiang, Jiuxing [1 ]
Lu, Xihong [1 ,3 ]
机构
[1] Sun Yat Sen Univ, Sch Chem, MOE Key Lab Bioinorgan & Synthet Chem, Key Lab Low Carbon Chem & Energy Conservat Guangd, Guangzhou 510275, Guangdong, Peoples R China
[2] Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China
[3] Wuyi Univ, Sch Appl Phys & Mat, Jiangmen 529020, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Oxygen evolution reaction; Nickel oxide; Interfacial electronic coupling; CeO2 and nitrogen co-decoration; CATALYSTS; NANOSHEETS; ELECTROCATALYSTS; SPECTROSCOPY; REDUCTION;
D O I
10.1016/j.cej.2021.134255
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Nickel oxide (NiO) has emerged as a promising electrocatalyst for oxygen evolution reaction (OER) catalysis but undergoes insufficient active sites and unfavorable OH- adsorption properties. Herein, we develop an effective CeO2 and nitrogen co-decoration strategy to boost the OER performance of NiO (Ce/N-NiO) nanoparticles dramatically. The strong electron coupling among Ce/N-NiO nanoparticles provide exceptional facilities for the interface electron transfer from nitrogen-doped NiO to CeO2, and further induces the formation of rich Ni3+ surface, endowing it with abundant active sites. Besides, the surface electron reconfiguration energetically promotes the adsorption of OH-, resulting in fast reaction kinetics. As expected, the Ce/N-NiO sample shows superior OER property with a low overpotential of 250 mV at 10 mA cm(-2). Particularly, when the current density exceeds 90 mA cm(-2), the OER activity of Ce/N-NiO outstrips noble-metal-based RuO2. This co-decoration approach provides a practical guide for designing high-performance catalysts for OER and beyond.
引用
收藏
页数:9
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