Electrochemical water splitting technology is considered to be the most reliable method for converting renewable energy such as wind and solar energy into hydrogen. Here, a nanostructured RuO/CoO-RuCo-EO electrode is designed magnetron sputtering combined with electrochemical oxidation for the oxygen evolution reaction (OER) in an alkaline medium. The optimized RuO/CoO-RuCo-EO electrode with a Ru loading of 0.064 mg cm exhibits excellent electrocatalytic performance with a low overpotential of 220 mV at the current density of 10 mA cm and a low Tafel slope of 59.9 mV dec for the OER. Compared with RuO prepared by thermal decomposition, its overpotential is reduced by 82 mV. Meanwhile, compared with RuO prepared by magnetron sputtering, the overpotential is also reduced by 74 mV. Furthermore, compared with the RuO/Ru with core-shell structure ( = 244 mV), the overpotential is still decreased by 24 mV. Therefore, the RuO/CoO-RuCo-EO electrode has excellent OER activity. There are two reasons for the improvement of the OER activity. On the one hand, the core-shell structure is conducive to electron transport, and on the other hand, the addition of Co adjusts the electronic structure of Ru.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8696486 | PMC |
| http://dx.doi.org/10.1039/d1ra00271f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Print-Light-Synthesis of ruthenium oxide thin film electrodes for electrochemical sensing applications.
Bioelectrochemistry
January 2025
University of Bologna, Department of Industrial Chemistry "Toso Montanari", Center of Chemical Catalysis-C(3), Via Piero Gobetti 85, 40129 Bologna, Italy. Electronic address:
Print-Light-Synthesis (PLS) combines the inkjet printing of a ruthenium precursor ink with the simultaneous photo-induced generation of ruthenium oxide films. During PLS, inkjet-printing generates on conductive as well as insulating substrates micrometer-thin reaction volumes that contain with high precision defined precursor loadings. Upon direct UV light irradiation, the Ru precursor converts to RuO while all other ink components escape in the gas phase.
View Article and Find Full Text PDFSignificantly Enhanced Acidic Oxygen Evolution Reaction Performance of RuO Nanoparticles by Introducing Oxygen Vacancy with Polytetrafluoroethylene.
Polymers (Basel)
December 2024
Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, State Key Laboratory of Biobased Material and Green Papermaking, Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
The supported RuO catalysts are known for their synergistic and interfacial effects, which significantly enhance both catalytic activity and stability. However, polymer-supported RuO catalysts have received limited attention due to challenges associated with poor conductivity. In this study, we successfully synthesized the RuO-polytetrafluoroethylene (PTFE) catalyst via a facile annealing process.
View Article and Find Full Text PDFOptimizing Acidic Oxygen Evolution with Manganese-Doped Ruthenium Dioxide Assembly.
ACS Appl Mater Interfaces
January 2025
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China.
Ruthenium dioxide (RuO) is one of the promising catalysts for the acidic oxygen evolution reaction (OER). However, designing RuO catalysts with good activity and stability remains a significant challenge. In this work, we propose the manganese (Mn)-doped RuO assembly as a catalyst for the OER with improved activity and stability.
View Article and Find Full Text PDFDifferentiating reactive chlorine species for micropollutant abatement in chloride containing water by electrochemical oxidation process.
Water Res
March 2025
Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China; Institute of Sun Yat-Sen University in Shenzhen, PR China. Electronic address:
Electrochemical oxidation process (EOP) is promising for micropollutant degradation in water treatment, where chloride ions (Cl) are inevitable in aqueous systems, leading to the EOP/Cl system. The oxidation of Cl at anodes generates reactive chlorine species (RCS), including heterogeneous chlorine species (Cl), homogeneous free available chlorine (FAC), chlorine dioxide (ClO), and chlorine radicals (CRs). This study developed a method to differentiate various RCS responsible for the removal of carbamazepine in EOP/Cl using the RuO/IrO-Ti anode.
View Article and Find Full Text PDFEnriched Electrophilic Oxygen Species on Ru Optimize Acidic Water Oxidation.
Small
December 2024
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, P. R. China.
Ruthenium oxide (RuO) is considered one of the most promising catalysts for replacing iridium oxide (IrO) in the acidic oxygen evolution reaction (OER). Nevertheless, the performance of RuO remains unacceptable due to the dissolution of Ru and the lack of *OH in acidic environments. This paper reports a grain boundary (GB)-rich porous RuO electrocatalyst for the efficient and stable acidic OER.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!