Sentences with phrase «oxygen evolution»
Haber, J. A., Guevarra, D., Jung, S. H., Jin, J. & Gregoire, J. M. Discovery of New Oxygen Evolution Reaction Electrocatalysts by Combinatorial Investigation of the Ni - La - Co - Ce Oxide Composition Space.
solarfuelshub.org
Discovering Ce - rich oxygen evolution catalysts, from high throughput screening to water electrolysis.
«A combination of a cobalt - oxide hybrid air catalyst for oxygen reduction and a nickel - iron hydroxide hybrid air catalyst for oxygen evolution resulted in a record high - energy efficiency for a zinc - air battery, with a high specific energy density more than twice that of lithium - ion technology.»
«There are not many known photocatalysts capable of oxygen evolution, and this work expands the space of such materials in non-incremental fashion,» Neaton says.
The degree of variation of pH values in the culture medium and inhibition rate of photosynthetic oxygen evolution by acetazolamide were affected by pH treatments.
Reprinted with permission from Klaus, S., Cai, Y., Louie, M. W., Trotochaud, L. & Bell, A. T. Effects of Fe Electrolyte Impurities on Ni (OH) 2 / NiOOH Structure and Oxygen Evolution Activity.
By integrating theory and experiment, we validate our approach and develop important new insights into structure - property relationships for TMOs for oxygen evolution photocatalysts, paving the way for use of first - principles data - driven techniques in future applications.
«That's what his advance is pointing towards,» he says, «finding an alternative catalyst that will allow us to do oxygen evolution (breaking the bonds of water or H2O and forming oxygen) in concert with hydrogen» on a grand scale.
«We found a catalyst that is very good at driving both the opposing oxygen evolution reaction and the oxygen reduction reaction,» said senior author Ho Nyung Lee of ORNL's Materials Science and Technology Division.
Chen said oxygen evolution reactions often depend upon an electrocatalyst using a «noble metal» — iridium, platinum or ruthenium.
«Nature Chemistry,» publish the idea from Professor Lee Cronin and Mark Symes of Glasgow University in a paper called, «Decoupling Hydrogen and Oxygen Evolution During Electrolytic Water Splitting Using a Proton - Coupled Electron Buffer.»
«This nanofiber has also brought significant improvements in the performance of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).»
[Antoine Allanore, Lan Yin and Donald R. Sadoway, A new anode material for oxygen evolution in molten oxide electrolysis, in Nature]
Rates of photosynthetic oxygen evolution were enhanced under elevated CO2 or NH 4 + conditions, independently, but these two factors did not show an interactive effect.
He will study catalytic processes of oxygen evolution and CO2 reduction using ab initio calculations.
Oxygen electrochemistry plays a key role in renewable energy technologies such as fuel cells and electrolyzers, but the slow kinetics of the oxygen evolution reaction (OER) limit the performance and commercialization of such devices.
While unstrained lanthanum nickelate is a catalyst on its own for oxygen evolution, the strained material is an even better catalyst, enabling oxygen reduction as well.
In particular, an oxygen reduction catalyst extracts electrons from oxygen molecules, while an oxygen evolution catalyst drives the reaction in the opposite direction.
The performance of the new catalyst was better than that of platinum, a noble metal that is known to excel at driving both oxygen evolution and reduction reactions.
Although it is simple in theory, splitting water into hydrogen and oxygen is a complex process, requiring two separate reactions — a hydrogen evolution reaction and an oxygen evolution reaction, each requiring a separate electrode.
Measurements showed that the surface of the catalyst changed, but the mechanism that's sped up oxygen evolution is unclear.
In a paper published last week in the journal Science, the research team presented an oxygen evolution catalyst that worked in harsh conditions and beat all of its competitors.
Jaramillo and his collaborators sought to develop a catalyst for the oxygen evolution reaction, the notoriously slow half of the water - splitting process.
In an oxygen evolution reaction catalyst, one of the key benchmarks is the overpotential, or the amount of electricity needed to drive the reaction.
The researchers are now working to make their oxygen evolution catalyst more efficient and less expensive, as well as teasing out the physics of what makes the material work so well.
«Normally, a hydrogen evolution reaction is done in acid and an oxygen evolution reaction is done in base.
There they will measure the photocatalytic activity for the oxygen evolution and hydrogen evolution reactions, as occur when light energy is successfully used to break water down into useable fuel.
The Reaction Mechanism with Free Energy Barriers at Constant Potentials for the Oxygen Evolution Reaction at the IrO2 (110) Surface.
Catalysis of the oxygen evolution reaction in strongly acidic electrolytes with earth - abundant crystalline nickel - manganese antimonate B. Brunschwig, N. Lewis, C. MacFarland, I. Moreno - Hernandez, K. Papadantonakis, C. Read
High throughput, multi-pH evaluation of earth - abundant pseudo-quaternary metal oxide catalysts for the oxygen evolution reaction J. Haber, D. Guevarra, R.J.R. Jones, K. Kan, J. Gregoire
Resume: Highly active and low - cost electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are crucial due to the need for clean and renewable energy.
Electrocatalyst design and development for the Oxygen Evolution Reaction (OER) and the electro - reduction.
Highly active and low - cost electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are crucial due to the need for clean and renewable energy.
In an integrated solar - fuels device with tandem light absorber PEC architecture, the ideal photoanode candidates are semiconductors, which have band gaps between 1.6 and 2 eV and a valence band energy that allows efficient photoelectrocatalysis of the oxygen evolution reaction (OER).
Jeffrey Neation, «High - Throughput Discovery of Electrochemically Stable Photocatalysts for Oxygen Evolution»
Depositing a cocatalyst on the anode could help enhance the oxygen evolution step of water splitting.
But knowing exactly where to put this oxygen evolution catalyst (OEC) is a challenge: Putting it in the wrong place can hinder light absorption, weakening the anode's performance.
McCrory, C. C. L., Jung, S. H., Peters, J. C. & Jaramillo, T. F. Benchmarking Heterogeneous Electrocatalysts for the Oxygen Evolution Reaction.
Developing Novel Platinum Group Metal - Free Catalysts for Alkaline Hydrogen and Oxygen Evolution Reactions, Sanjeev Mukerjee and Serge Pann, Northeastern University
Red arrow indicates ceria reduction (oxygen evolution); blue arrow indicates oxidation (fuel production).
Using theory, modern surface - science methods, and synchrotron - based techniques, JCAP researchers seek to understand the reaction pathways and the elementary steps of the hydrogen and oxygen evolutions reactions to facilitate the design of new, Earth - abundant catalysts for solar - fuels production.
The semiconductor, which performs the oxygen evolution reaction, is just iron oxide.