A low cost, low-temperature processable, highly efficient nickel sulfide counter electrode is demonstrated. Using the tailored, preformed nickel sulfide nanoparticles and electrostatic self-assembly, a novel counter electrode was fabricated that exceeded the efficiency of a conventional Pt-based cell.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c2cc34559e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advancing Oxygen Evolution Catalysis with Dual-Phase Nickel Sulfide Nanostructures.
Energy Fuels
January 2025
Department of Gaseous Electronics (F6), Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
The production, conversion and storage of energy based on electrocatalysis, mainly assisted by oxygen evolution reaction (OER), plays a crucial role in alkaline water electrolyzers (AWEs) and fuel cells. Nevertheless, the insufficient availability of highly efficient catalyst materials at a reasonable cost that overcome the sluggish electrochemical kinetics of the OER is one of the significant obstacles. Herein, we report a fast and facile synthesis of vapor phase deposition of dual-phase nickel sulfide (Ni-sulfide) using low-temperature annealing in the presence of HS and demonstrated as an efficient catalyst for OER to address the issues with sluggish electrochemical kinetics.
View Article and Find Full Text PDFConstructing Neuron-like Structured NiS/MOF Composites with Enhanced Regulation of Electron Transport and Active Sites for Oxygen Evolution.
Molecules
December 2024
School of Aeronautics and Astronautics, Sichuan Univeristy, Chengdu 610065, China.
Constructing fast electron transfer pathways and abundant electro-active sites is an effective strategy to improve the oxygen evolution reaction (OER) performance of catalysts. Herein, structural engineering and dual-phase engineering were employed to construct a NiS nanoparticle-encapsulated MOF configured with a pseudo-neuronal structure (NiS/MOF/HT). It was found that the pseudo-neuronal structure, constructed with a carbon nanohorn (CNH) and carbon nanotube (CNT), provided fast electron transfer pathways and abundant exposed active sites.
View Article and Find Full Text PDFCore-Shell Quantum Wires-Supported Single-Atom Fe Electrocatalysts for Efficient Overall Water Splitting.
Small
December 2024
College of Chemistry Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China.
It is of great significance for the development of hydrogen energy technology by exploring the new-type and high-efficiency electrocatalysts (such as single atom catalysts (SACs)) for water splitting. In this paper, by combining interface engineering and doping engineering, a unique single atom iron (Fe)-doped carbon-coated nickel sulfide (NiS) quantum wires (NiS@Fe-SACs) is prepared as a high-performance bi-functional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Theoretical calculation and experimental results show that the addition of atomic Fe species can effectively adjust the electronic structure of sulfide, the interfacial electron transfer modulates the d-band center position, optimizing the transient state of the catalytic process and adsorption energy of hydrogen/oxygen intermediates, and greatly accelerates the kinetics of HER and OER.
View Article and Find Full Text PDFElectrochemical Synthesis of Nickel Hexacyanoferrate and Nickel Sulfide on Nickel Foam as Sustainable Electrocatalysts for Hydrogen Generation via Urea Electrolysis.
ACS Appl Mater Interfaces
December 2024
Department of Chemical Engineering, Hanyang University (Seoul Campus), 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
Article Synopsis
- A new method for hydrogen production combines the hydrogen evolution reaction (HER) with the urea oxidation reaction (UOR), enhancing energy efficiency.
- Researchers developed a simple technique to create nanoporous nickel sulfide (NiS) and nickel hexacyanoferrate (NiHCF) nanocubes on nickel foam without needing extra nickel sources, improving the process.
- This innovative system demonstrates impressive catalytic performance, achieving a low cell voltage for hydrogen production, offering a sustainable way to produce hydrogen from urea-rich wastewater and potentially reducing carbon emissions.
Interface Electron Transfer Direction-Tuned Urea Electrooxidation Over Multi-Interface Nickel Sulfide Heterojunctions.
Small
December 2024
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China.
Article Synopsis
- The study introduces two types of nickel sulfide (NiS) heterojunctions embedded in nitrogen-doped carbon nanotubes that act as effective catalysts for urea oxidation reactions.
- The performance of these catalysts is enhanced by adjusting the direction of electron transfer at their interfaces, with one configuration achieving a significant current density, indicating improved efficiency in the reaction process.
Want 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!