A5080382784- Advancements in Solid Oxide Fuel Cells
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Electronic and Structural Properties of Oxides
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Magnetic and transport properties of perovskites and related materials
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Chalcogenide Semiconductor Thin Films
- Particle Detector Development and Performance
- Silicon and Solar Cell Technologies
- Dark Matter and Cosmic Phenomena
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Transition Metal Oxide Nanomaterials
- Cosmology and Gravitation Theories
- Advancements in Semiconductor Devices and Circuit Design
- Ionic liquids properties and applications
- Advancements in Battery Materials
- Semiconductor materials and devices
- Pigment Synthesis and Properties
Tampere University
2023-2024
Aalto University
2015-2024
Abdus Salam Centre for Physics
2011-2024
Hubei University
2019-2024
Quaid-i-Azam University
1993-2024
A. Alikhanyan National Laboratory
2023-2024
Institute of High Energy Physics
2023
Technische Universität Dresden
2019-2020
University of Faisalabad
2020
University of Agriculture Faisalabad
2020
The current status of the long-term stability dye solar cells (DSCs) and factors affecting it is reviewed. purpose to clarify present knowledge degradation phenomena in these by critically separating assumptions from solid experimental evidence reported literature. Important processes such as desorption, decrease tri-iodide concentration, at photoelectrode counter electrode, affect ultraviolet light moisture, issues related sealing, are covered. It concluded that techniques giving chemical...
The electrochemical mechanisms and performance of a symmetrical low-temperature SOFC with single oxide as the electrolyte are investigated here.
Dual-ion electrolytes with oxygen ion and proton-conducting properties are among the innovative solid oxide electrolytes, which exhibit a low Ohmic resistance at temperatures below 550 °C. BaCo0.4Fe0.4Zr0.1Y0.1O3-δ perovskite-phase cathode has demonstrated efficient triple-charge conduction (H+/O2-/e-) in high-performance low-temperature fuel cell (LT-SOFC). Here, we designed another type of conducting perovskite based on Ba0.5Sr0.5Co0.1Fe0.7Zr0.1Y0.1O3-δ (BSCFZY), formed heterostructure...
Achieving fast ionic conductivity in the electrolyte at low operating temperatures while maintaining stable and high electrochemical performance of solid oxide fuel cells (SOFCs) is challenging. Herein, we propose a new type based on perovskite Sr0.5Pr0.5Fe0.4Ti0.6O3-δ for low-temperature SOFCs. The conducting behavior modulated using Mg doping, three different Sr0.5Pr0.5Fe0.4-xMgxTi0.6O3-δ (x = 0, 0.1, 0.2) samples are prepared. synthesized Sr0.5Pr0.5Fe0.2Mg0.2Ti0.6O3-δ (SPFMg0.2T) proved...
Reducing the operational temperature of solid oxide fuel cells (SOFC) is vital to improving their durability and lifetime. However, a traditional SOFC suffers from high ohmic polarization losses at low temperatures, leading poor performance. Gadolinium-doped ceria best ionic conductor for lower temperatures. The present work envisages GDC as an electrolyte applying low-temperature (LT-SOFCs). So, in this regard, herein, synthesized through wet chemical co-precipitation technique functional...
Recent studies indicate that the electrolyte ionic conductivity in an SOFC can be considerably increased by using lithium compounds as electrode. We found of Gd0.1Ce0.9O1.95 Ni0.8Co0.15Al0.05LiO2 anode cell was 10.1 mS/cm only at 550 °C without H2, but it to 44.6 after feeding H2 anode. It LiOH/Li2CO3 moved into GDC from NCAL and formed a three-phase composite electrolyte. A space charge region with high oxygen vacancy concentration is around interface GDC, which increases conductivity.
A semiconductor-based electrolyte in a ceramic fuel cell (SCFC) has the potential to improve device performance even at lower temperatures (≤520 °C) mainly due its high ionic conductivity. Here, we present chemically stable perovskite semiconductor Nb-doped SrTiO3−δ (STN) for SCFC, which reached power density of 678 mW/cm2 and open-circuit voltage (OCV) 1.03 V 520 °C. The STN showed conductivity 0.22 S/cm. Electrochemical impedance spectroscopy (EIS), X-ray photoelectron (XPS), band...
Introducing triple-charge (H+/O2–/e–) conducting materials is a promising alternative to modify cathode as an electrolyte in advanced ceramic fuel cells (CFC). Herein, we designed novel perovskite-structured semiconductor Co0.2/Fe0.2-codoped La0.5Ba0.5Zr0.3Y0.3O3−δ (CF-LBZY) and used electrode. CF-LBZY perovskite exhibited high ionic (O2–/H+) conductivity of 0.23 S/cm achieved remarkable power density 656 mW/cm2 550 °C. X-ray photoelectron spectroscopy (XPS) analysis revealed that the Co/Fe...
Electrolytes with high-proton conduction and low activation energy are attractive for reducing the high operating temperature of solid-oxide fuel cells to less than <600 °C. In this work, we have fabricated semiconducting electrolyte SrFeTiO3-δ (SFT) material exhibiting ionic exceptionally protonic at but electronic evade short-circuiting issue. The prepared cell device exhibited open-circuit voltage (OCV) a high-power output 534 mW/cm2, which 474 mW/cm2 could be sure related part. current...
Perovskite oxide doping may modulate the energy bandgap strongly affecting oxygen reduction activity and electrical properties with a high potential for use as low-temperature solid fuel cell (LT-SOFC) electrolyte.
Degradation of dye solar cells (DSCs) under severe ageing conditions may lead to loss the tri-iodide in electrolyte - a phenomenon known as bleaching. Monitoring changes concentration result degradation mechanisms and understanding their causes effects are fundamental for improving long-term stability DSCs. In this contribution strongly accelerated test (1 Sun visible light, 1.5 Suns UV T = 110 °C 12 h) was performed on DSCs double-sealed masterplate configuration purposely induce bleaching,...
Introducing multiple-ionic transport through a semiconductor-electrolyte is promising approach to realize the low-temperature operation of SOFCs. Herein, we designed and synthesized single-phase Ce-doped BaCo0.2Fe0.3-xTm0.1Zr0.3Y0.1O3-δ possessing triple-charge (H+/O2−/e−) conduction ability. Two different compositions are synthesized: BaCo0.2Fe0.3-xCexTm0.1Zr0.3Y0.1O3-δ [x = 0.1–0.2]. The 20% doped Ce composition exhibits an outstanding oxide-ion protonic conductivity 0.193 S cm−1 0.09 at...
A comparative study is performed to investigate the electrochemical performance of low-temperature ceramic fuel cells (CFCs) utilizing two different novel electrolytes. First, a perovskite semiconductor SrCo0.3Sn0.7O3-δ was used as an electrolyte in CFCs due its modest ionic conductivity (0.1 S/cm) and demonstrated acceptable power density 360 mW/cm2 at 520 °C. The cell primarily limited moderate transport electrolyte. In order improve conductivity, new strategy using bi-layer concept...
Wide bandgap semiconductor perovskite SrTiO3 (STO) has attracted extensive attention due to its higher kinetics of electrons (electronic conductivity). However, rare studies have been performed tune the STO towards ionic conduction, which could make it a promising candidate for an electrolyte in ceramic fuel cells (CFCs). Herein, we designed Co/Fe–SrTiO3 as membrane semiconducting property conduction via surface-enriched O-vacancies. The surface doping Co/Fe into resulted lowering Fermi...
Proton ceramic fuel cells (PCFCs) are an emerging clean energy technology; however, a key challenge persists in improving the electrolyte proton conductivity, e.g., around 10-3-10-2 S cm-1 at 600 °C for well-known BaZr0.8Y0.2O3 (BZY), that is far below required 0.1 cm-1. Herein, we report approach tuning BZY from low bulk to high interfacial conduction by introducing semiconductor CeO2-δ forming semiconductor-ionic heterostructure CeO2-δ/BZY. The was identified significantly higher...