Clearing up the ‘dark side’ of artificial leaves

While artificial leaves hold promise as a way to take carbon dioxide — a potent greenhouse gas — out of the atmosphere, there is a ‘dark side to artificial leaves that has gone overlooked for more than a decade,’ according to a chemical engineer.

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Leap toward robust binder-less metal phosphide electrodes for Li-ion batteries

Researchers have successfully fabricated a binder-less tin phosphide (Sn4P3)/carbon (C) composite film electrode for lithium-ion batteries via aerosol deposition. The Sn4P3/C particles were directly solidified on a metal substrate via impact consolidation, without applying a binder. Charging and discharging cycling stabilities were improved by both complexed carbon and controlled electrical potential window for lithium extraction. This finding could help realize advanced lithium-ion batteries of higher capacity.

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Treating solar cell materials reveals formation of unexpected microstructures

Hybrid organic-inorganic perovskites have been used in optoelectronic devices including solar cells, photodetectors, light-emitting diodes and lasers, but the surface of hybrid perovskites is prone to surface defects, where charge carriers are trapped in the semiconducting material. To solve this problem, the crystal surface must be passivated. Researchers describe testing hybrid organic-inorganic perovskite crystals treated with benzylamine to investigate the mechanisms by which the surface of the crystal is passivated, and traps states are reduced.

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Technological developments in radiation detectors enhance global nuclear security

Nuclear power plants can withstand most inclement weather and do not emit harmful greenhouse gases. However, trafficking of the nuclear materials to furnish them with fuel remains a serious issue as security technology continues to be developed. Physicists conducted research to enhance global nuclear security by improving radiation detectors. According to them, improving radiation detectors requires the identification of better sensor materials and the development of smarter algorithms to process detector signals.

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Ultra-thin layers of rust generate electricity from flowing water

Researchers have shown that iron oxide layers can convert kinetic energy of saltwater into electrical power.

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3D printed rocket fuel comparison

Scientists in Australia are using 3D printing to create fuels for rockets, and using tailor-made rocket motors they’ve built to test the fuels.

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Energy from seawater

A new battery made from affordable and durable materials generates energy from places where salt and fresh waters mingle. The technology could make coastal wastewater treatment plants energy-independent and carbon neutral.

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Mysterious release of radioactive material uncovered

It was the most serious release of radioactive material since Fukushima 2011, but the public took little notice of it: In September 2017, a slightly radioactive cloud moved across Europe. Now, a study has been published, analyzing more than 1300 measurements from all over Europe and other regions of the world to find out the cause of this incident.

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A catalyst for sustainable methanol

Scientists have developed a new catalyst that converts CO2 and hydrogen into methanol. Offering realistic market potential, the technology paves the way for the sustainable production of fuels and chemicals.

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Supercomputers use graphics processors to solve longstanding turbulence question

Advanced simulations have solved a problem in turbulent fluid flow that could lead to more efficient turbines and engines.

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