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A study by a team of researchers from Technische Universität Berlin (TUB) and Fritz-Haber-Institut der Max-Planck-Gesellschaft has found that direct seawater splitting for hydrogen production has substantial drawbacks compared to conventional water splitting and offers almost no advantage. Additionally, H 2 O is needed for water splitting.
Researchers at the University of Cambridge, with colleagues at the University of Tokyo, have developed a standalone device that converts sunlight, carbon dioxide and water into formic acid, a carbon-neutral fuel, without requiring any additional components or electricity. —senior author Professor Erwin Reisner. Qian Wang et al.
Researchers in Israel have designed a separate-cell photoelectrochemical (PEC) water-splitting system with decoupled hydrogen and oxygen cells for centralized hydrogen production. A paper describing their system is publishedin the journal Joule. The hydrogen cell contains the cathode, and it is physically separated from the oxygen cell.
The nanostructured photoelectrode results in spontaneous hydrogen evolution from water without any external bias applied with a faradaic efficiency of 30% and excellent stability. A promising way of storing solar energy is via chemical fuels, in particular hydrogen as it is considered as a future energy carrier. —Pawar and Tahir.
The Dutch Institute for Fundamental Energy Research ( DIFFER ) is partnering with Toyota Motor Europe (TME) to develop a device that absorbs water vapor, and splits it into hydrogen and oxygen directly using solar energy. One of these sustainable fuels is hydrogen, which can be used to store renewable energy. —Mihalis Tsampas.
Carbon dioxide capture company AirCapture and carbon dioxide conversion company OCOchem, along with other partners, have won a $2.93-million OCOchem transforms recycled CO 2 , water and zero-carbon electricity to produce formic acid, a globally traded commodity chemical and emerging electro-fuel.
Researchers led by MIT professor Daniel Nocera have produced an “artificial leaf”—a solar water-splitting cell producing hydrogen and oxygen that operates in near-neutral pH conditions, both with and without connecting wires. Earlier post.). simulated sunlight. constructing a simple, stand-alone device composed of.
The results, they say, are broadly relevant to reactions involving the use of IL-H 2 O mixtures (as solvents, reactants, or catalysts), including, but not limited to, organic catalysis, electrochemistry, and biomass processing or conversion. A paper describing the work was published 10 March in the ACS journal Energy & Fuels.
At this year’s Africa Aerospace & Defence (AAD) expo at AFB Waterkloof in Centurion, Rheinmetall AG is presenting turnkey, mobile modular solutions for producing, storing and transporting CO 2 -free hydrogen.
A fast, green and one-step method for producing porous carbon spheres—a component for carbon capture technology and for new ways of storing renewable energy—has been developed by Swansea University researchers. storage and conversion, catalysis, gas adsorption and storage, drug and enzyme delivery, and water treatment.
The water-based Plantrose Process consists of two core steps: Fractionation of biomass and separation of the remaining solids which contain cellulose and lignin. The stored solids are slurried with water and pumped and heated to reaction temperature and then fed to the fractionation reactor where the reaction takes place.
Daniel Nocera and his associates have found another formulation, based on inexpensive and widely available materials, that can efficiently catalyze the splitting of water molecules using electricity. Earlier post.). Materials for the new catalyst are even more abundant and inexpensive than those required for the first.
A new study, led by academics at St John’s College, University of Cambridge, has used semi-artificial photosynthesis to explore new ways to produce and store solar energy. They used natural sunlight to convert water into hydrogen and oxygen using a mixture of biological components and manmade technologies. —Katarzyna Sokó?,
Evonik and Siemens Energy commissioned a pilot plant—sponsored by the German Federal Ministry of Education and Research (BMBF)—that uses carbon dioxide and water to produce chemicals. It consists of a CO electrolyzer, developed by Siemens Energy, a water electrolyzer and the bioreactor with Evonik’s know-how.
By using a water-lean post-combustion capture solvent, (N-(2-ethoxyethyl)-3-morpholinopropan-1-amine) (2-EEMPA), they achieved a greater than 90% conversion of captured CO 2 to hydrocarbons—mostly methane—in the presence of a heterogenous Ru catalyst under relatively mild reaction conditions (170 °C and 2 pressure).
This collaboration expands Mitsubishi Power’s capability to store hydrogen safely and cost effectively in salt caverns in strategic locations across North America. Hydrogen has been stored in salt caverns for decades in the US Gulf Coast. Brine, a mixture of salt and water, is produced during the solution mining of salt formations.
Porous carbon based layers have become standard electrode materials in many energy conversion and storage applications. The high surface area maximizes the charge stored at the solid-liquid (S-L) interface. On one hand, sufficient water content is required to hydrate the membrane to maintain high proton conductivity.
The primary goal of this funding opportunity ( DE-FOA-0000949 ) is to provide disruptive new solar conversion and storage technology options to enable a much higher penetration of solar energy generation into the US energy mix. Concentrating solar power (CSP), solar heating and solar hot water applications combined contribute less than 0.1%
Israel-based NewCO2Fuels (NCF), a subsidiary of GreenEarth Energy Limited in Australia, reported completion of stage 1 testing of its proof-of-concept system for the conversion of CO 2 into fuels using solar energy. Simultaneously, the same device can dissociate water (H 2 O) to hydrogen (H 2 ) and oxygen (O 2 ). Click to enlarge.
Fraunhofer’s POWERPASTE releases hydrogen on contact with water. Specific energies and energy densities including conversion losses. POWERPASTE stores hydrogen in a chemical form at room temperature and atmospheric pressure to be then released on demand, said Dr. Marcus Vogt, research associate at Fraunhofer IFAM.
The insoluble carbon floats to the surface of the melt, where it can be removed and stored or incorporated into composite materials. Bi 0.73 ) achieved 95% methane conversion at 1065°C in a 1.1-meter Bi 0.73 ) achieved 95% methane conversion at 1065°C in a 1.1-meter Under these conditions, the equilibrium conversion is 98%.
Schematic representation and operating principles of the lithium–water electrochemical cell used for hydrogen generation: (1) external circuit and (2) inside of lithium–water electrochemical cell. the high-school chemistry demonstration of the violent reaction between sodium and water.). sea water) by using sunlight.
While there is global potential to generate renewable energy at costs already competitive with fossil fuels, a means of storing and transporting this energy at a very large scale is a roadblock to large-scale investment, development and deployment. Generation 2 moves the Haber-Bosch process to renewable sources of hydrogen.
A team from UCLA and colleagues from Tarbiat Modares University and Shahed University in Iran have devised an integrated solar-powered system for both electrochemical energy storage and water electrolysis. A paper on their work is published in the journal Energy Storage Materials. Wh kg −1 with specific power of 37.9 Rahmanifar, Maher F.
The electrochemical conversion of ammonia to dinitrogen in a direct ammonia fuel cell (DAFC) is a necessary technology for the realization of a nitrogen economy. We discovered chemical compounds that catalyze the conversion of ammonia to nitrogen at room temperature, without any applied voltage or added chemicals.
The project aims to demonstrate the conversion of surplus electricity into methane for distribution via the existing natural gas grid; effectively storing electricity by making, then storing, methane.
The US Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) announced up to $30 million in funding for a new program for technologies that use renewable energy to convert air and water into cost-competitive liquid fuels. ( Conversion efficiency, %. DE-FOA-0001562 ). hydrogen or electricity). Click to enlarge.
volts versus the reversible hydrogen electrode) in CO-saturated alkaline water. For the Nature study, Kanan and Li built an electrochemical cell: two electrodes placed in water saturated with carbon monoxide gas. The challenge was to find a cathode that would reduce carbon monoxide to ethanol instead of reducing water to hydrogen.
The thermochemical production of hydrogen and oxygen from water via a series of chemical reactions is of interest because it directly converts thermal energy into stored chemical energy (hydrogen and oxygen), and thus can take advantage of excess heat given off by other processes. —Xu et al.
Solar-driven thermochemical cycles offer a direct means of storing solar energy in the chemical bonds of energy-rich molecules. syngas—from water and CO 2. Schematic illustration of direct hydrocarbon (C x H y O z ) formation from water and carbon dioxide during the reoxidation of reduced ceria doped with a catalyst (Cat.).
A new study by Berkeley Lab researchers at the Joint Center for Artificial Photosynthesis ( JCAP ) shows that nearly 90% of the electrons generated by a new hybrid photocathode material designed to store solar energy in hydrogen are being stored in the target hydrogen molecules (Faradaic efficiency). Earlier post.) —Gary Moore.
With SSAB’s conversion, we will reduce carbon dioxide emissions by 10 percent in Sweden and 7 percent in Finland. The hydrogen gas used in the direct reduction process is produced by electrolysis of water with fossil-free electricity, and can be used directly or stored for later use. It also creates jobs and export successes.
Instead of using H 2 , direct conversion of CO 2 with CH 4 (dry reforming of methane, DRM) to liquid fuels and chemicals (e.g. Moreover, it is a cheap carbon source which can increase the atom utilization of CO 2 hydrogenation due to the stoichiometric ratio of C and O atoms, as well as reducing the formation of water. …
Quinones are naturally abundant, inexpensive, small organic molecules, and similar to molecules that store energy in plants and animals. The technology could fundamentally transform the way electricity is stored on the grid, making power from renewable energy sources such as wind and sun far more economical and reliable. Background.
First, the vehicle’s flue gases in the exhaust pipe are cooled down and the water is separated from the gases. That liquid is stored in a tank and can then be converted back into conventional fuel at the service stations using renewable electricity. In their study, the scientists used the example of a delivery truck.
Molybdate is relatively abundant and stable in air and water. reacts with triethylsilane in acetonitrile under an atmosphere of CO 2 to produce formate (69% isolated yield) together with silylated molybdate (quantitative conversion to [MoO 3 (OSiEt 3 )] ? , 2 -CO 3 )] 2? 50% isolated yield) after 22 hours at 85 °C. —Knopf et al.
The home is also three times more water-efficient than a typical US home. A 10 kWh battery energy storage system in the garage, using the same lithium-ion cells that are used in the Honda Fit EV, allows stored solar energy to be used at night, when household demand typically peaks and electric vehicles are usually charged.
Their analysis suggests that carbon storage loss caused by peatland conversion could be equivalent to as much as 7 years worth of carbon emissions by mining and upgrading (at 2010 levels). million metric tons of stored carbon. Oil sands mining and reclamation cause massive loss of peatland and stored carbon. —Rooney et al.
Researchers at the Department of Energy’s Oak Ridge National Laboratory (ORNL) have developed an electrocatalyst which operates at room temperature and in water for the electroreduction of dissolved CO 2 with high selectivity for ethanol. Their finding was serendipitous. We discovered somewhat by accident that this material worked.
The utilization of the full spectrum of sunlight in STEP results in a higher solar energy efficiency than other solar conversion processes. organic electrosynthesis of benzoic acid from benzene without over-oxidizing into CO 2. This study is intended as a proof of concept demonstration.
Evapotranspiration (ET) refers to the sum total of water lost while the plant is growing, either from evaporation through the plant stem itself (a process called “transpiration”), or from water evaporated off of the plant’s leaves or the ground. —Hamilton et al.
A team of researchers at the US Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have hit a new milestone in their development of a hybrid bioinorganic system for solar-to-chemical energy conversion. Carbohydrates are biomolecules that store the chemical energy used by living cells. Earlier post.)
1 ) and ammonia conversion (>99%) at a significantly reduced operating temperature (. The steam carrier presents similar membrane reactor performance to that of noble gases, and the water reservoir used for steam generation acts as an ammonia buffer via scrubbing effects. mol-H 2 g cat ?1 Credit: KIST. —Park et al.
Researchers at Idaho National Laboratory have developed a new electrode material for a protonic ceramic electrochemical cell (PCEC) that can efficiently convert excess electricity and water into hydrogen. Water splitting reaction on oxygen electrode and PNC’s hydration. °C The triple conducting oxide of PrNi 0.5 Ding et al.
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