Proton exchange membrane water electrolysis (PEMWE) is a highly promising hydrogen production technology for enabling a sustainable energy supply. Herein, we synthesize a single-atom Co-doped core-shell heterostructured Ru@RuO (Co-Ru@RuO) catalyst via a combination of ultrafast pulse-heating and calcination methods as an iridium (Ir)-free and durable oxygen evolution reaction (OER) catalyst in acidic conditions. Co-Ru@RuO exhibits a low overpotential of 203 mV and excellent stability over a 400 h durability test at 10 mA cm. When implemented in industrial PEMWE devices, a current density of 1 A cm is achieved with only 1.58 V under an extremely low catalyst loading of 0.34 mg cm, which is decreased by 4 to 6 times as compared to other reported Ru-based catalysts. Even at 500 mA cm, the PEMWE device could work stably for more than 200 h. Structural characterizations and density functional theory (DFT) calculations reveal that the single-atom Co doping and the core-shell heterostructure of Ru@RuO modulate the electronic structure of pristine RuO, which reduce the energy barriers of OER and improve the stability of surface Ru. This work provides a unique avenue to guide future developments on low-cost PEMWE devices for hydrogen production.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jacs.4c18238 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Colloidal gold-palladium-platinum alloy nanospheres with tunable compositions and defined numbers of atoms.
Nanoscale
March 2025
Departamento de Química Física, Universidad Complutense de Madrid, 28040 Madrid, Spain.
The combination of different metals into a discrete colloidal nanocrystal (NC) lattice to form solid solutions can result in synergetic and non-additive effects, leading to physicochemical properties distinct from those observed in monometallic NCs. However, these features are influenced by parameters that are challenging to control simultaneously using conventional synthesis methods, including composition, morphology, size, and elemental distribution. In this study, we present a methodology that exploits seed-mediated growth routes and pulsed laser-induced ultrafast heating to synthesize bimetallic and trimetallic colloidal alloy NCs with tailored compositions, well-defined spherical morphologies, and precise control over the number of atoms per NC lattice.
View Article and Find Full Text PDFDynamic Ionic Environment Modulation for Precise Electrosynthesis of Heterostructured Bimetallic Nanoparticles.
Adv Sci (Weinh)
March 2025
Department of Chemistry, The University of Texas at Austin, Austin, Texas, 78712, USA.
Bimetallic heterostructures, including core-shell and Janus configurations, often offer unique electrocatalytic properties compared to monometallic nanoparticles. However, achieving precise control over both elemental composition and spatial arrangement within these structures remains a challenge. Here, an electrosynthesis method is introduced that enables the fabrication of heterostructured bimetallic nanoparticles with precise, independent control of their elemental distribution.
View Article and Find Full Text PDFConstruction of Heterostructure Nickel Sulfoselenide Arrays for Advanced Potassium-Ion Hybrid Capacitors.
Small
March 2025
Institute of Novel Semiconductors, State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
Transition metal compounds are being extensive studied in K-ion hybrids capacitors (KIHCs) owing to their abundant resource and ultrahigh theoretical capacity. However, their poor cycling lifespan and rate capability as vulnerable structures is the major bottleneck for future development. Here the design and construction a heterostructure Nickel sulfoselenide arrays (NiSSe) with large-scale high ordering and large interval spacing are reported.
View Article and Find Full Text PDFNi-O-C/LNSP Core-Shell Heterostructure Mimicking Noble Metal-like Activity and Nonenzymatic Electrochemical Lactate Regulation in Human Sweat.
Langmuir
March 2025
Department of Chemistry, Materials Science Lab, Annamalai University, Annamalai Nagar, Tamilnadu 608002, India.
Herein, a core/shell LNSP (lamellar nanosheet-nanoplate) of nickel oxy carbide (Ni-O-C/LNSP) has been synthesized by a solvent-devoid combustion process, which exhibits exceptional oxygen evolution efficiency (OER) performance with an overpotential of 311 mV, a Tafel slope of 116 mV dec, and stability over 8 h with 2.8% potential loss owing to more exposed active sites and high conductivity with the interface effect. The activation energy of 28 kJ/mol was calculated for electrolysis using Ni-O-C/LNSP.
View Article and Find Full Text PDFDeveloping a Tunable Synthesis Route for Hollow Gold Nanoparticles@Semiconductor Core-Shell Heterostructures with Controllable Localized Surface Plasmon Resonance.
Inorg Chem
March 2025
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
In the rapidly evolving field of nanotechnology, metal@semiconductor core-shell heterostructures have garnered significant attention for their unique optical and electronic properties. These structures offer immense potential for enhancing light harvesting and tuning the localized surface plasmon resonance (LSPR). However, the lack of a universal and scalable synthetic method for constructing diverse semiconductor shells remains a major challenge.
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!