SIC OpenIR
Dual-doping of ruthenium and nickel into Co3O4 for improving the oxygen evolution activity
Guo, BB; Ma, RG; Li, ZC; Luo, J; Yang, MH; Wang, JC
2020-05-01
Source PublicationMATERIALS CHEMISTRY FRONTIERS
Issue5Pages:1390
SubtypeArticle
AbstractSpinel oxides Co3O4 with mixed valence cations Co2+ and Co3+ make it possible to improve the catalytic activity by regulating the distribution of cations via additional doping. Controllable synthesis of nanosized Co3O4 with excellent catalytic properties and stability towards the oxygen evolution reaction (OER) is critical for conversion and storage of sustainable source-derived electricity. Herein, Ru and Ni co-doped Co3O4 nanoparticles (Ru/Ni-Co3O4) with abundant active sites and oxygen vacancies were synthesized by a one-step hydrothermal method. Ru atoms doped into the octahedral sites improve the intrinsic activity of spinel oxide Co3O4, while the introduction of Ni creates abundant oxygen vacancies, thus exposing more active sites at the surface and accelerating the OER kinetics. The optimized Ru/Ni-Co3O4 nanoparticles possess a low overpotential (290 mV at 10 mA cm(-2)) and excellent stability (only 1% activity decay after 10 h), significantly superior to the state-of-the-art IrO2 and most OER electrocatalysts reported before. This work provides a new strategy to increase the density of the active sites and generate surface oxygen vacancies simultaneously without destroying the crystallinity/microstructure and use of any additional complicated treatments (such as plasma techniques and multi-step pyrolysis).
DOI10.1039/d0qm00079e
WOS KeywordNANOSHEETS ; CO ; REDUCTION ; EFFICIENT ; PERFORMANCE ; CATALYSTS ; VACANCIES ; RICH
Language英语
WOS Research AreaChemistry ; Materials Science
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28090
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Guo, BB,Ma, RG,Li, ZC,et al. Dual-doping of ruthenium and nickel into Co3O4 for improving the oxygen evolution activity[J]. MATERIALS CHEMISTRY FRONTIERS,2020(5):1390.
APA Guo, BB,Ma, RG,Li, ZC,Luo, J,Yang, MH,&Wang, JC.(2020).Dual-doping of ruthenium and nickel into Co3O4 for improving the oxygen evolution activity.MATERIALS CHEMISTRY FRONTIERS(5),1390.
MLA Guo, BB,et al."Dual-doping of ruthenium and nickel into Co3O4 for improving the oxygen evolution activity".MATERIALS CHEMISTRY FRONTIERS .5(2020):1390.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo, BB]'s Articles
[Ma, RG]'s Articles
[Li, ZC]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo, BB]'s Articles
[Ma, RG]'s Articles
[Li, ZC]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo, BB]'s Articles
[Ma, RG]'s Articles
[Li, ZC]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.