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EPFL team develops low-cost water splitting cell with solar-to-hydrogen efficiency of 12.3%

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Michael Grätzel at EPFL (Ecole Polytechnique Fédérale de Lausanne) in Switzerland has developed a highly efficient and low-cost water-splitting cell combining an advanced perovskite tandem solar cell and a bi-functional Earth-abundant catalyst. Splitting water requires an applied voltage of at least 1.23 V and up to 1.5

Low Cost 278
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Study Finds Stratospheric Water Vapor Is An Important Driver of Decadal Global Surface Climate Change

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Decadal warming rates arising from (i) greenhouse gases and aerosols alone (black); (ii) that obtained including the stratospheric water decline after 2000 (red); and (iii) including both the stratospheric water vapor decline after 2000 and the increase in the 1980s and 1990s (cyan). Stratospheric water vapor and radiative processes.

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Leclanché reduces cobalt in NMCA cells from 20 to 5%; 20% higher energy density; water-based production

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Leclanché SA has reduced the cobalt content in NMCA as cathode material from 20% to 5% and manufacture the electrodes using an environmentally friendly water-based process. Water binder-based NMCA cathodes are easier to dispose of and are also recyclable. No organic solvents are used in the technically simpler process.

Water 221
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EPFL/Technion team develops “champion” nanostructures for efficient solar water-splitting to produce hydrogen

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Researchers from EPFL in Switzerland and Technion-Israel Institue of Technology have developed nanoparticle-based ?-Fe Fe 2 O 3 (hematite) electrodes that achieve the highest photocurrent of any metal oxide photoanode for photoelectrochemical water-splitting under 100?mW?cm © LPI / EPFL. Click to enlarge. 2 air mass, 1.5

Water 230
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Blackstone announces progress with printed battery cells

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Switzerland-based Blackstone Resources AG announced that it has achieved a series of important milestones for producing any kind of printed battery cells. These electrodes were created using environmentally friendly, water-based binder systems. The production step of the calendaring of electrodes is no longer necessary.

Batteries 468
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Audi partnering with Climeworks on CO2 direct air capture and storage

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Water from the Hellisheiði power plant then flows through the facility and transports the carbon dioxide roughly 2,000 meters below the surface of the Earth. The water returns to the cycle of the geothermal power plant. This uses a specially developed adsorbent to bind the CO 2 in the air.

Audi 446
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EU project HyFlexFuel converted sewage sludge and other biomasses into kerosene by hydrothermal liquefaction (HTL); SAF

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The pilot-scale HTL plant processes aqueous biomass slurries (~20% dry matter content) at temperatures up to 350 °C and pressures around 200 bar, where water does not boil but remains in a liquid state. Under these conditions, biomass is converted into a crude bio-oil, which is separated from the process water behind the reactor.

Convert 418