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27 Current news of Tsinghua Universityrss
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The hunt for the next generation of materials for anodes in lithium-ion batteries has long suffered from a series of parasitic chemical reactions for many of the proposed replacements for the graphite thatis conventionally used. A novel preparation technique for a silicon-monoxide-carbon ...
Researchers have identified what makes a common electrolyte additive so effective at improving the performance of batteries using a lithium cobalt oxide cathode
Nitriles—an organic compound with a carbon atom triple-bonded to a nitrogen atom—are commonly added to the electrolyte formula for batteries using a lithium cobalt oxide cathode, making such batteries come much closer to realizing their full theoretical performance. Until now, battery researchers ...
As our need for high-density batteries increases with widespread adoption of electric cars and alternative energy sources, improving the stability and capacity of lithium-ion batteries is a necessity. Current lithium-ion battery technology, which often uses nickel, is less stable at extreme ...
A solution to climate change could be sitting under your bathroom sink
Ammonia, a compound of nitrogen and hydrogen (NH3) that is commonly known for its use as a household cleaner, could be used as an alternative fuel for vehicles or as a potential energy storage medium. However, traditional methods of producing ammonia from nitrogen oxide (NO) on a large scale are ...
"This apparent magic is essentially a simple electrochemical process"
Throughout history, alchemists believed in the existence of the philosopher’s stone: a substance that could turn cheap substances into precious gold. Now scientists from The University of Manchester, Tsinghua University in China and the Chinese Academy of Sciences have shown that graphene can be ...
Supramolecular adhesive with usable temperature range of 400 degrees Celsius
Researchers have developed a supramolecular adhesive that is recyclable and has outstanding gluing properties across a wide range of temperatures, from liquid nitrogen (−196 °C) up to oven-hot temperatures (plus 200 °C). As the team report in the journal Angewandte Chemie, the adhesive got its ...
Carbon dioxide or CO2 can potentially be used as a feedstock to be converted into carbon-neutral ‘solar fuels’ that store energy from the sun. But for them to be competitive with fossil fuels, the chemical reaction that performs this conversion needs much more efficient catalysts. Researchers ...
Researchers developed a sulfur oxidation-reduction (redox) mediator to improve lithium–sulfur battery’s sluggish reaction kinetics which has limited the battery’s energy density
Lithium-sulfur batteries hold strong promise as next-generation energy storage devices because of their ultrahigh theoretical energy density. However, the actual energy density of lithium–sulfur batteries is far from the theoretical value because of the cathode’s severe limitations caused by the ...
Heterogeneous photocatalysis can help scientists sustainably control products and byproducts of chemical reactions, including reducing CO₂
Controlling the products and byproducts of a chemical reaction is called selectivity. Scientists are trying to find better ways to control selectivity in industrial chemical reactions to improve the quality of the chemical products, reduce wasteful byproducts, and reduce harmful byproducts, like ...
A new study by Chinese researchers demonstrates a novel approach to enhancing the storage performance of batteries and capacitors. The researchers developed a simple yet efficient way to produce a material with excellent performance for use in devices that rely on lithium-ion storage. They ...