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Showing 1 to 20 of 149 for “"water splitting"”.
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Iron-oxide catalyzed silicon photoanode for water splitting
… study of high efficiency photoanodes for water splitting using silicon and iron-oxide. The fundamental limitations of silicon to water splitting applications were overcome by an ultrathin iron-oxide film stack and a pH-adjusted electrochemical environment. It was experimentally …
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Design of water-splitting photocatalysts by first principles computations
… thesis focuses on the design of novel inorganic water-splitting photocatalysts for solar applications using first principles computations. Water-splitting photocatalysts are materials that can photo-catalyze the water-splitting reaction under certain conditions. They provide an alternative way to …
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Rational Design of Trimetallic Electrocatalyst for Electrochemical Overall Water Splitting
… bifunctional electrocatalysts for overall water splitting have attracted increasing attention due to their earth-abundancy and high efficiency. However, current bifunctional electrocatalysts suffer from the disadvantages of the complex synthetic process, low yield, or low energy conversion …
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First-principles study of doped hematite surfaces for photoelectrochemical water splitting
Photoelectrochemical (PEC) water splitting, using sunlight and appropriate semiconductors to produce hydrogen (H2) fuel, is a promising route to solve both the production of clean H2 fuel and storage for solar energy. Owing to its various advantages, hematite (α-Fe2O3) has emerged as a promising …
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En route towards advanced catalyst materials for the electrocatalytic water splitting reaction
… as catalysts for the electrocatalytic water splitting reaction. In order to breathe life into this technology, cost-efficient, stable and efficient catalysts are imploringly desired. In this manner, the preparation of Mn-, N-, S-, P-, and C-containing nickel materials has been …
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NICKEL HYDROXIDE NANORIBBONS FOR EFFICIENT WATER SPLITTING AND DIRECT METHANOL FUEL CELL
Oxygen evolution reaction (OER) and methanol oxidation reaction (MOR) are very important reactions in hydrogen harvesting system and direct methanol fuel cell (DMFC). However, these two reactions are sluggish processes, due to the multi-proton coupled reactions. In this work, we report the first …
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Designing high performance overall water splitting electrocatalysts from non-precious metal selenides
… in fuel cells without concern of contaminants. Water splitting reaction to generate H<sub>2</sub> and O<sub>2</sub> is one promising method of converting solar energy into fuels. The major challenge with this technology is the sluggish anodic reaction, oxygen evolution reaction (OER), in …
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High Intensity Ultrasound Processing of AlNi (50 wt.% Ni) Particles for Electrocatalytic Water Splitting
… for potential application in electrocatalytic water splitting process for hydrogen generation. During ultrasonic treatment of metal particles the changes in bulk (crystallite size, microstrain) and surface (composition, morphology) properties were monitored in order to unravel the fundamental …
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A COLLABORATIVE APPROACH TO MATERIALS DISCOVERY FOR WATER SPLITTING PHOTOCATALYSTS AND LITHIUM SULFUR REDOX.
… ecosystem. The production of hydrogen fuels, via water splitting, is of practical relevance for meeting global energy needs and mitigating the environmental consequences of fossil-fuel-based transportation. Water photoelectrolysis has been proposed as a viable approach for generating hydrogen, …
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Exploiting polar interfaces for photocatalytic water splitting: application to the anatase-cuprous oxide heterojunction
… of solar energy to produce hydrogen by means of water splitting mechanism is a potentially transformative approach to achieving a clean and renewable energy society. Photo-produced hydrogen is a valuable fuel and energy carrier, which is easier to store than electricity or heat, and it is …
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Solar-driven overall water splitting on CoO nanoparticles : first-principles density functional theory studies
Photoelectrochemical (PEC) water splitting has been suggested as a promising techinique for large-scale hydrogen fuel production. In particular, spontaneous photocatalytic overall water splitting on self-standing particles in water without external driving potential has been highlighted as a clean …
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Water splitting for hydrogen and syngas production over a novel bi-layer perovskite membrane
… and investigate its performance for water thermochemical reduction. In this bi-layer membrane configuration, LaO.8 SrO.2 Cro9.5 Co0.05 (LSCC) is exposed to the feed side (high oxygen potential side) and LaO.8 SrO.2 CoO3 (LSCo) is chosen for the sweep side (low oxygen potential side). …
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Development of Solar Sensitive Thin Film for Water Splitting and Water Heating using Solar Concentrator
Photocatalytic water splitting using solar energy could contribute to the solution of environmental and energy issues related to the hydrogen production. Key research area in this field is the development of photo-catalyst able to provide high energy conversion efficiency. TiO2 has been mostly …
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The impact of surface modifications on the properties of α-SnWO4 photoanodes for photoelectrochemical water splitting
Zunehmende Luftverschmutzung und globale Erwärmung sind eine Herausforderung für das Leben der Menschheit im 21. Jahrhundert und darüber hinaus. Um die Auswirkungen auf die Umwelt, Gesellschaft und Wirtschaft abzumildern, ist ein Übergang in ein nachhaltiges Energiesystem unerlässlich. Wasserstoff …
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Indium-based thiospinels via solid-state pyrolysis of metal-organic precursors for water splitting and supercapacitance
… with refined electrochemical activities for water splitting and supercapacitance applications. The work outlined in this thesis focuses on the synthesis and evaluation of various indium-based thiospinel nanomaterials for enhanced electrochemical energy applications. Firstly, a comparative …
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Enhancing the photoelectrochemical water splitting characteristics of titanium and tungsten oxide based materials via doping and sensitization
… (PEC) hydrogen generation by water splitting is a promising approach to harvest solar energy. Hydrogen gas is a clean and high energy capacity fuel. However, the solar-to-hydrogen conversion efficiency is determined mainly by the properties of the materials employed as …
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Development of a new hybrid photochemical/electrocatalytic water splitting reactor for hydrogen production: design, analysis and experiments
Solar-driven water splitting combines several attractive features for sustainable energy utilization. The conversion of solar energy to a type of storable energy has crucial importance. An alternative method to hydrogen production by solar energy without consumption of additional reactants is a …
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Solar water splitting for hydrogen production: development of photocatalysts based on earth abundant and biocompatible materials (TiO2 and Fe2O3)
… is possible through photo-electrochemical water splitting, a clean and sustainable way for hydrogen production. The materials used as photo-electrodes in a photo-electrochemical cell must fulfil a variety of thermodynamic and kinetic requirements to ensure good efficiency and durability. …
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