Showing posts with label Hydrogen. Show all posts
Showing posts with label Hydrogen. Show all posts
8/5/20
EU Explainer on a greener future: Why is the EU Commission betting on hydrogen for a greener future?
The coronavirus pandemic has diverted public attention away from many pressing issues, not least the climate crisis. But behind the scenes,the EU appears to be keeping its foot on the gas in dealing with climate change.
9/18/18
Germany: World′s first hydrogen train rolls out in Germany
Commuters in Germany now have a chance to ride the world's first
hydrogen train as the country moves to replace old diesel-powered
engines. Instead of exhaust fumes, hydrogen trains produce only water.
A French-made hydrogen train took its first scheduled trip from the station of Bremervörde in Lower Saxony on Monday, marking a world first for the new transport technology.
Two Coradia iLint engines will replace diesel trains on the 100-kilometer (62-mile) route linking the towns of Cuxhaven and Buxtehude, with 14 other hydrogen trains set to be introduced across the state by 2021. The new-type engines are produced by the French company Alstom.
"The world's first hydrogen train is entering into commercial service and is ready for serial production," Alstom CEO Henri Poupart-Lafarge said during the unveiling ceremony in Bremervörde, which will serve as a refueling site.
The new trains carry a hydrogen tank and fuel cells on the roof, and produce electricity by combining hydrogen and oxygen. Excess energy is stored in ion lithium batteries. The engines can run for around 1,000 kilometers without refueling and reach a maximum speed 140 kilometers per hour (87 miles per hour), similar to diesel trains.
Read more: World′s first hydrogen train rolls out in Germany | News | DW | 17.09.2018
A French-made hydrogen train took its first scheduled trip from the station of Bremervörde in Lower Saxony on Monday, marking a world first for the new transport technology.
Two Coradia iLint engines will replace diesel trains on the 100-kilometer (62-mile) route linking the towns of Cuxhaven and Buxtehude, with 14 other hydrogen trains set to be introduced across the state by 2021. The new-type engines are produced by the French company Alstom.
"The world's first hydrogen train is entering into commercial service and is ready for serial production," Alstom CEO Henri Poupart-Lafarge said during the unveiling ceremony in Bremervörde, which will serve as a refueling site.
The new trains carry a hydrogen tank and fuel cells on the roof, and produce electricity by combining hydrogen and oxygen. Excess energy is stored in ion lithium batteries. The engines can run for around 1,000 kilometers without refueling and reach a maximum speed 140 kilometers per hour (87 miles per hour), similar to diesel trains.
Read more: World′s first hydrogen train rolls out in Germany | News | DW | 17.09.2018
2/16/16
Alternative Energy: New technique for turning sunlight into hydrogen
A team of Korean researchers, affiliated with UNIST has recently
pioneered in developing a new type of multilayered (Au NPs/TiO2/Au)
photoelectrode that boosts the ability of solar water-splitting to
produce hydrogen. According to the research team, this special
photoelectrode, inspired by the way plants convert sunlight into energy
is capable of absorbing visible light from the sun, and then using it to
split water molecules (H2O) into hydrogen and oxygen.
This study is a collaboration among scientists, including Prof. Jeong Min Baik (School of Materials Science and Engineering, UNIST), Prof. Jae Sung Lee (School of Energy and Chemical Engineering, UNIST), Prof. Heon Lee (School of Materials Science and Engineering, Korea University), and Prof. Jonghwa Shin (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology).
This multilayered photoelectrode takes the form of two-dimensional hybrid metal-dielectric structure, which mainly consists of three layers of gold (Au) film, ultrathin TiO2 layer (20 nm), and gold nanoparticles (Au NPs). In a study, reported in the January 21, 2016 issue of Nano Energy, the team reported that this promising photoelectrode shows high light absorption of about 90% in the visible range 380-700nm, as well as significant enhancement in photo-catalytic applications.
Many structural designs, such as hierarchical and branched assemblies of nanoscale materials have been suggested to increase the UV-visible absorption and to enhance water-splitting efficiency. However, through incorporation of plasmonic metal nanoparticles (i.e. Au) to TiO2 structures, their photoelectrodes have shown to enhance the photoactivity in the entire UV-visible region of solar spectrum when compared to the existing ones, the team reports.
Prof. Jeong Min Baik of UNIST (School of Materials Science and Engineering) states, “Several attemps have been made to use UV-based photoelectrodes for hydrogen production, but this is the first time to use the metal-dielectric hybrid-structured film with TiO2 for oxygen production.” Moreover, according to Prof. Baik, this special type of photoelectrode uses approximately 95% of the visible spectrum of sunlight, which makes up a substantial portion (40%) of full sunlight. He adds, “The developed technology is expected to improve hydrogen production efficiency.”
Read more: New technique for turning sunlight into hydrogen | Solid State Technology
This study is a collaboration among scientists, including Prof. Jeong Min Baik (School of Materials Science and Engineering, UNIST), Prof. Jae Sung Lee (School of Energy and Chemical Engineering, UNIST), Prof. Heon Lee (School of Materials Science and Engineering, Korea University), and Prof. Jonghwa Shin (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology).
This multilayered photoelectrode takes the form of two-dimensional hybrid metal-dielectric structure, which mainly consists of three layers of gold (Au) film, ultrathin TiO2 layer (20 nm), and gold nanoparticles (Au NPs). In a study, reported in the January 21, 2016 issue of Nano Energy, the team reported that this promising photoelectrode shows high light absorption of about 90% in the visible range 380-700nm, as well as significant enhancement in photo-catalytic applications.
Many structural designs, such as hierarchical and branched assemblies of nanoscale materials have been suggested to increase the UV-visible absorption and to enhance water-splitting efficiency. However, through incorporation of plasmonic metal nanoparticles (i.e. Au) to TiO2 structures, their photoelectrodes have shown to enhance the photoactivity in the entire UV-visible region of solar spectrum when compared to the existing ones, the team reports.
Prof. Jeong Min Baik of UNIST (School of Materials Science and Engineering) states, “Several attemps have been made to use UV-based photoelectrodes for hydrogen production, but this is the first time to use the metal-dielectric hybrid-structured film with TiO2 for oxygen production.” Moreover, according to Prof. Baik, this special type of photoelectrode uses approximately 95% of the visible spectrum of sunlight, which makes up a substantial portion (40%) of full sunlight. He adds, “The developed technology is expected to improve hydrogen production efficiency.”
Read more: New technique for turning sunlight into hydrogen | Solid State Technology
1/19/12
Europe's Hypersonic Airline - by Glenn Pew
A project insider for a planned European hypersonic airliner is confident his program could in 2013 demonstrate that technological barriers can be overcome, but current economic conditions may stall the project. The European Space Agency's Lapcat program is working on the A2 aircraft, which aims to carry passengers beyond Mach 5 in long-range flight. Johan Steelant, the program's coordinator, told the BBC that while different systems and subsystems still need to be proven, "critical technology is no longer a blocking point." The blocking point now, it appears, may be the current atmosphere of economic austerity prevalent across Europe. But a large amount of funding has already been allocated.
The project is funded by both the European Commission and private investors, which have together backed Lapcat to the tune of 10 million EUR. With economic forces working against it, ambition and desire are working for it. According to Steelant, the European Commission wants to be an aviation pioneer that leads the world in innovation. As it is, Lapcat's funding is set to run dry in 2013, when the project will be reviewed. It is then that the project's viability will have to be balanced against economic and political realities. The A2 aircraft would be powered by a hybrid engine design. The engine would use a turbojet for takeoff and to accelerate to supersonic speeds. Then a rocket would take the aircraft to Mach 6 or more, running on liquid hydrogen and air. Economic difficulties aside, the A2 is not expected to overcome all the challenges posed by hypersonic passenger flight for decades and is not forecast to fly until 2040.
For more: Europe's Hypersonic Airliner
The project is funded by both the European Commission and private investors, which have together backed Lapcat to the tune of 10 million EUR. With economic forces working against it, ambition and desire are working for it. According to Steelant, the European Commission wants to be an aviation pioneer that leads the world in innovation. As it is, Lapcat's funding is set to run dry in 2013, when the project will be reviewed. It is then that the project's viability will have to be balanced against economic and political realities. The A2 aircraft would be powered by a hybrid engine design. The engine would use a turbojet for takeoff and to accelerate to supersonic speeds. Then a rocket would take the aircraft to Mach 6 or more, running on liquid hydrogen and air. Economic difficulties aside, the A2 is not expected to overcome all the challenges posed by hypersonic passenger flight for decades and is not forecast to fly until 2040.For more: Europe's Hypersonic Airliner
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