A5028609247- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Fuel Cells and Related Materials
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- TiO2 Photocatalysis and Solar Cells
- Quantum Dots Synthesis And Properties
- Electrochemical Analysis and Applications
- Ammonia Synthesis and Nitrogen Reduction
- MXene and MAX Phase Materials
- Advanced Thermoelectric Materials and Devices
- Advanced Nanomaterials in Catalysis
- Catalytic Processes in Materials Science
- Advanced Memory and Neural Computing
- Chalcogenide Semiconductor Thin Films
- Semiconductor materials and interfaces
- Conducting polymers and applications
- Extraction and Separation Processes
- Catalysis and Hydrodesulfurization Studies
- Graphene research and applications
- Mesoporous Materials and Catalysis
- Electrochemical sensors and biosensors
- Molecular Junctions and Nanostructures
University of Limerick
2020-2023
Wuhan University of Technology
2013-2021
Abstract Designing a highly active electrocatalyst with optimal stability at low cost is must and non‐negotiable if large‐scale implementations of fuel cells are to be fully realized. Zeolitic‐imidazolate frameworks (ZIFs) offer rich platforms design multifunctional materials due their flexibility ultrahigh surface area. Herein, an advanced Co–N x /C nanorod array derived from 3D ZIF nanocrystals superior electrocatalytic activity toward oxygen reduction reaction (ORR) evolution (OER)...
Abstract Replacement of noble‐metal platinum catalysts with cheaper, operationally stable, and highly efficient electrocatalysts holds huge potential for large‐scale implementation clean energy devices. Metal–organic frameworks (MOFs) metal dichalcogenides (MDs) offer rich platforms design active owing to their flexibility, ultrahigh surface area, hierarchical pore structures, high catalytic activity. Herein, an advanced electrocatalyst based on a vertically aligned MoS 2 nanosheet...
Highly active, stable, and cheap Pt-free catalysts for the hydrogen evolution reaction (HER) are under increasing demand future energy conversion systems. However, developing HER electrocatalysts with Pt-like activity that can function at all pH values still remains as a great challenge. Herein, based on our theoretical predictions, we design synthesize novel N,P dual-doped carbon-encapsulated ruthenium diphosphide (RuP2 @NPC) nanoparticle electrocatalyst HER. Electrochemical tests reveal...
Abstract Developing highly efficient and stable electrocatalysts plays an important role in energy‐related electrocatalysis fields. Transition‐metal phosphides (TMPs) possess a series of advantages, such as high conductivity, earth‐abundance reserves, good physicochemical properties, therefore arousing wide attention. In this review, the electrochemical activity origin TMPs, allowing rational design construction toward various energy‐relevant reactions is first discussed. Subsequently, their...
Abstract Here first a 2D dual‐metal (Co/Zn) and leaf‐like zeolitic imidazolate framework (ZIF‐L)‐pyrolysis approach is reported for the low‐cost facile preparation of Co nanoparticles encapsulated into nitrogen‐doped carbon nanotubes (Co‐N‐CNTs). Importantly, reasonable Co/Zn molar ratio in ZIF‐L key to emergence microstructure. Specifically, high‐dispersed cobalt are fully tips N‐CNTs, leading full formation highly active Co–N–C moieties oxygen reduction evolution reactions (ORR OER). As...
A series of noble metal diphosphides (IrP<sub>2</sub>@NC, RhP<sub>2</sub>@NC and Pd<sub>5</sub>P<sub>2</sub>@NC) have been designed fabricated, among which IrP<sub>2</sub>@NC exhibits ultrahigh hydrogen evolution reaction performance.
Structural and compositional engineering of atomic-scaled metal−N−C catalysts is important yet challenging in boosting their performance for the oxygen reduction reaction (ORR) evolution (OER). Here, boron (B)-doped Co−N−C active sites confined hierarchical porous carbon sheets (denoted as Co-N,B-CSs) were obtained by a soft template self-assembly pyrolysis method. Significantly, introduced B element gives an electron-deficient site that can activate electron transfer around sites,...
Theoretical calculations reveal that intrinsic pentagons in the basal plane can contribute to local electronic redistribution and contraction of band gap, making carbon matrix possess superior binding affinity electrochemical reactivity. To experimentally verify this, a pentagon-defect-rich nanomaterial was constructed by means situ etching fullerene molecules (C60 ). The tests show that, relative hexagons, such carbon-based material with abundant pentagon defects makes much greater...
TMPs wrapped in NPC show excellent catalytic activities and stabilities towards hydrogen evolution reaction a wide pH range.
Exploring efficient and earth-abundant electrocatalysts for water splitting is crucial various renewable energy technologies. In this work, iron (Fe)-doped nickel phosphide (Ni2P) nanosheet arrays supported on foam (Ni1.85Fe0.15P NSAs/NF) are fabricated through a facile hydrothermal method, followed by phosphorization. The electrochemical analysis demonstrates that the Ni1.85Fe0.15P NSAs/NF electrode possesses high electrocatalytic activity splitting. 1.0 M KOH, only needs overpotentials of...
Transition metal phosphides (TMPs) have been identified as promising nonprecious electrocatalyst for hydrogen evolution reaction (HER) and other energy conversion reactions. Herein, we reported a general strategy synthesis of series TMPs (Fe2P, FeP, Co2P, CoP, Ni2P, Ni12P5) nanoparticles (NPs) with different phases embedded in N-doped carbon (NC) matrix using salt, ammonium dihydrogen phosphate, melamine precursor varying molar ratios thermolysis temperatures. The resultant can serve highly...
A hexapod PtRuCu nanocrystalline alloy material is successfully fabricated by a facile approach based on Stranski–Krastanov growth and galvanic replacement used as an efficient catalyst for direct methanol fuel cells (DFMCs). Because of the synergetic effect metallic elements in oxidation, activity durability prepared PtRuCu/C significantly enhanced. It has mass 1.35 mgPt–1 specific 3.92 mA cm–2, which are 3.8 8.2 times higher than those Pt/C, respectively. Its only decreases 27% after 800...
Lignin in advanced energy applications: source, extraction methodolgy, structure/property relationships.
Developing efficient non-precious metal hydrogen evolution reaction (HER) electrocatalysts is a great challenge for sustainable production from water. In this communication, the first time, semimetallic MoP2 nanoparticle films on Mo plate (MoP2 NPs/Mo) are fabricated through facile two-step strategy. When used as binder-free cathode, as-prepared NPs/Mo electrode exhibits superior HER catalytic activity at all pH values. At current density of 10 mA cm−2, catalyst displays overpotentials 143,...
3D graphene-based materials offer immense potentials to overcome the challenges related functionality, performance, cost, and stability of fuel cell electrocatalysts. Herein, a nitrogen (N) sulfur (S) dual-doped porous graphene catalyst is synthesized via single-row pyrolysis using biomass as solitary source for both N S, structure directing agent. The thermochemical reaction functional groups with oxide facilitates in situ generation reactive S species, stimulating layers reorganize into...
Mo<sub>2</sub>C QDs/NGCLs exhibit high catalytic activity and durability for the hydrogen evolution reaction in a broad pH range.
Transition metal phosphides (TMPs) are considered to be superb catalysts for water splitting. In this work, we introduce an efficient strategy fabricate dicobalt phosphide (Co2P) quantum dots embedded in N, P dual-doped carbon (Co2P@NPC) on cloth (Co2P@NPC/CC) by situ carbonization of cobalt ion induced phytic acid (PA) and polyaniline (PANI) macromolecule precursors. As a highly self-supported electrode, it has low onset overpotential (74 mV at 1 mA cm-2) approaching that the commercial...
Pt-based electrocatalysts are by far the most effective for hydrogen evolution reaction (HER) and oxygen reduction (ORR), but they still suffer from high cost insufficient overall performance. Improving Pt utilization via alloying or forming core@shell structures is important enhancing activity electrocatalytic Herein, we report a simple seed-mediated method synthesizing dodecahedral PtCu alloy atomic shell on Pd nanocrystals. Significantly, such Pd@PtCu nanocomposite with unique...
WP NPs@NC exhibits remarkable hydrogen evolution reaction catalytic activity and durability over the entire pH range.
Porous nitrogen-doped graphene with a very high surface area (1152 m<sup>2</sup>g<sup>−1</sup>) is synthesized by novel strategy using intrinsically porous biomass (soybean shells) as carbon and nitrogen source<italic>via</italic>calcination KOH activation outstanding oxygen reduction performance.
Small diameter cobalt and nitrogen co-doped carbon nanotubes (Co/N-CNTs) were grown from a mesoporous-silica (mSiO<sub>2</sub>) covered Co-based MOF (ZIF-67).