A5006233623- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Catalysis and Oxidation Reactions
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Chemical Looping and Thermochemical Processes
- Advanced biosensing and bioanalysis techniques
- Catalytic Processes in Materials Science
- Pharmacological Effects and Assays
- Ionic liquids properties and applications
- Catalysts for Methane Reforming
- Carbon dioxide utilization in catalysis
- Analytical chemistry methods development
- CO2 Reduction Techniques and Catalysts
- Pharmaceutical and Antibiotic Environmental Impacts
- Perovskite Materials and Applications
- Thermal Expansion and Ionic Conductivity
- Gas Sensing Nanomaterials and Sensors
Khalifa University of Science and Technology
2023-2025
Imperial College London
2018-2023
Ulsan National Institute of Science and Technology
2010-2019
Government of the Republic of Korea
2018
University of Warwick
2016-2017
National Institute of Standards and Technology
2013
Abstract In perovskites, exsolution of transition metals has been proposed as a smart catalyst design for energy applications. Although there exist with superior catalytic activity, they are limited by their ability to exsolve under reducing environment. When doping element is present in the perovskite, it often observed that surface segregation changed oxygen vacancies. However, mechanism co-segregation vacancies still an open question. Here we report trends metal (Mn, Co, Ni and Fe) on...
One of the most attractive routes for production hydrogen or syngas use in fuel cell applications is reforming and partial oxidation hydrocarbons. The hydrocarbons high temperature cells achieved through either external internal reforming. Reforming catalysis to convert rich plays an important role processing technology. current research area methane, methanol ethanol includes catalysts oxidation, methods catalyst synthesis, effective utilization both processes. In this paper recent progress...
Solid oxide fuel cells (SOFC) are the cleanest, most efficient, and cost-effective option for direct conversion to electricity of a wide variety fuels. While significant progress has been made in anode materials with enhanced tolerance coking contaminant poisoning, cathodic polarization still contributes considerably energy loss, more so at lower operating temperatures. Here we report synergistic effect co-doping cation-ordered double-perovskite material, PrBa0.5Sr0.5Co(2-x)Fe(x)O(5+δ),...
Abstract We report on an excellent anode‐supported H + ‐SOFC material system using a triple conducting (H /O 2− /e − ) oxide (TCO) as cathode for ‐SOFCs. Generally, mixed ionic (O and electronic conductors (MIECs) have been selected the of In system, however, MIEC cathodes limit electrochemically active sites to interface between proton electrolyte cathode. New approaches tailoring materials ‐SOFCs should therefore be considered. TCOs can effectively extend from entire surface The...
Abstract Exsolution has been intensively studied in the fields of energy conversion and storage as a method for preparation catalytically active durable metal nanoparticles. Under typical conditions, however, only limited number nanoparticles can be exsolved from host oxides. Herein, we report catalytic by selective exsolution through topotactic ion exchange, where deposited Fe guest cations exchanged with Co PrBaMn 1.7 0.3 O 5+ δ . Interestingly, this phenomenon spontaneously yields ,...
Abstract Exsolution is a promising method to design metal nanoparticles for electrocatalysis and renewable energy. Metal exsolved from perovskite oxide lattices have been utilized as catalysts in many energy fields because of their high durability excellent electro-catalytic properties. Although this has received much attention recent years, comprehensive understanding still lacking difficulties finding rational combination driving forces supports. Thus, the aim our work here recapitulate...
A robust Ca doped PrBaMn<sub>2</sub>O<sub>5+δ</sub> with a layered perovskite shows not only good chemical and structural stability under reducing oxidizing conditions but also remarkable electrochemical performance in hydrogen hydrocarbon fuels for symmetrical solid oxide fuel cells electrode.
Co and Ni are exsolved separately from the bulk, then aggregate to form a Co–Ni alloy at surface of perovskite material.
Recently, triple (H+ /O2- /e- ) conducting oxides (TCOs) have shown tremendous potential to improve the performance of various types energy conversion and storage applications. The systematic understanding TCO is limited by difficulty properly identifying proton movement in TCO. Herein, isotope exchange diffusion profile (IEDP) method employed via time-of-flight secondary ion mass spectrometry evaluate kinetic properties layered perovskite-type TCOs, PrBa0.5 Sr0.5 Co1.5 Fe0.5 O5+δ...
Surface decorated electrocatalytic nanoparticles coupled with oxide materials can effectively improve the electrochemical catalytic properties in energy storage and conversion application, such as chemical processes, electrolysis, batteries, fuel cells. Particularly, Mn rich simple perovskite-type R0.5Ba0.5MnO3-δ (R = Pr Nd) undergoes a phase transition to layered perovskite RBaMn2O5+δ at high temperature reduced condition. During this transition, exsolution of MnO (MnO-NP) from bulk...
Abstract Electrode materials which exhibit high conductivities in both oxidising and reducing atmospheres are demand for solid oxide fuel cells (SOFCs) electrolytic (SOECs). In this paper, we investigated Cu-doped SrFe 0.9 Nb 0.1 O 3−δ finding that the primitive perovskite 0.8 Cu (SFCN) exhibits a conductivity of 63 Scm −1 60 at 415 °C air 5%H 2 /Ar respectively. It is believed related to exsolved Fe (or FeCu alloy) on exposure atmosphere. To best our knowledge, atmosphere highest all...
Abstract Currently, low catalytic activity, selectivity and stability are the biggest challenges which restrict large scale applications of CO 2 electrochemical reduction. Formic acid, one highest value‐added products from reduction , has gathered much interest. Here, we develop nanoporous tin foam catalysts exhibit significantly high faster production rate to formate. In a 0.1 M NaHCO 3 solution, maximum Faradaic efficiency for formate can reach above 90 % with current density over 23 mA cm...
Abstract The development of innovative electrocatalysts for seawater splitting shows great potential large‐scale green energy. Specifically, interface engineering plays a vital role in improving surface properties and charge transfer. However, electrolysis encounters considerable challenges like chloride‐induced corrosion, impurities, microorganisms that hinder efficiency. Herein, we design highly durable electrocatalyst based on selenium‐enriched NiMn‐S x supported low‐density...
In this study, sulfur tolerance of a conventional Ni-yttria stabilized zirconia (Ni-YSZ) anode for solid oxide fuel cells is significantly improved by surface modification. The Ni-YSZ modified the infiltration BaZr0.1Ce0.7Y0.1Yb0.1O3−δ (BZCYYb) demonstrates stable performance in sulfur-containing H2 over 500 hours. contrast, bare without modification degrades drastically when exposed to fuel. This implies that BZCYYb coating an excellent catalyst anode. A single step into was sufficient...