期刊
ADVANCED ENERGY MATERIALS
卷 11, 期 28, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202101266
关键词
Ce modification; DFT simulations; Ni(OH); (2); oxygen evolution reaction; selenide
类别
资金
- National Natural Science Foundation of China [51631004]
- Project of Talent Development in Jilin Province
- Natural Science Foundation of Jilin Province [20200201073JC]
- Program for Jilin University Science and Technology Innovative Research Team [2017TD-09]
- Fundamental Research Funds for the Central Universities
A high-efficiency electrocatalyst for the oxygen evolution reaction (OER) has been designed and fabricated, showing remarkable activity with very low overpotential and Tafel slope, surpassing almost all OER electrocatalysts.
Exploring and developing high-efficiency electrocatalysts for the oxygen evolution reaction (OER) is desirable yet challenging for cost-effective transformation of renewable electricity into fuels and chemicals. Herein, a self-supported electrode of nanoflower-like Ce-modified Ni(OH)(2) grown on high-conductivity NiSe2 octahedra nanoparticles is designed and fabricated for the first time. By virtue of i) the high conductivity of the NiSe2 support for favorable electron transfer; ii) the open porous structure from the nanoflower-like Ce-modified Ni(OH)(2) for beneficial mass transport; iii) Ce doping for efficiently optimizing the energetics for OER intermediates based on density functional theory simulations; and iv) Ce(OH)(3) embedding for efficacious oxygen ion exchange and electronic transmission, the electrode exhibits remarkable OER activity with a very low overpotential of 158 mV at 10 mA cm(-2) and Tafel slope of 27 mV dec(-1), which outperform almost all OER electrocatalysts.
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