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Archive for the ‘chemistry’ category: Page 248

Aug 1, 2021

World’s first home hydrogen battery powers an average home for two days

Posted by in categories: business, chemistry, mobile phones, solar power, sustainability

The Australian company LAVO has developed a hydrogen storage system for domestic solar systems. It is the world’s first integrated hybrid hydrogen battery that combines with rooftop solar to deliver sustainable, reliable, and renewable green energy to your home and business. Developed in partnership with UNSW, Sydney, Australia, and Design + Industry, the Hydrogen Battery System from LAVO consists of an electrolysis system, hydrogen storage array, and fuel cell power system rolled into one attractive cabinet. When the electricity from the solar system on the roof is not needed, it is stored in the form of hydrogen. This then serves as fuel for the fuel cell when the solar system is not supplying electricity.


However, LAVO’s hydrogen hybrid battery delivers a continuous output of 5 kW and stores over 40kWh of electricity – enough to power the average Australian home for two days on a single charge. The system is designed to easily integrate with existing solar panels, creating a significant opportunity for LAVO to have an immediate and notable impact. There are Wi-Fi connectivity and a phone app for monitoring and control, and businesses with higher power needs can run several in parallel to form an intelligent virtual power plant.

Hydrogen is often incorrectly seen as an unsafe fuel, usually due to the 1937 Hindenburg disaster. However, the company says any leaks will disperse quickly, though, making it inherently no more dangerous than other conventional fuels such as gasoline or natural gas. This innovation has a lifespan of approximately 30 years, which is three times longer than that of lithium batteries, thanks to its reliance on hydrogen gas rather than the chemicals in a conventional battery.

Continue reading “World’s first home hydrogen battery powers an average home for two days” »

Jul 31, 2021

China nuclear reactor shutdown may be ‘a sign of caution over new design’

Posted by in categories: chemistry, nuclear energy

“I suspect the French side is wondering whether the fuel rod damage is caused by something that they can directly address by modifying the equipment design, the water chemistry around the fuel, the plant operating procedures, or maybe even the fuel fabrication process to ensure that this doesn’t happen in other plants that are based on the Taishan design,” Fishman said.


Developer could be trying to find source of fuel rod damage to alter design in the future, analyst says.

Jul 31, 2021

Acoustic tweezers can pick up objects without physical contact

Posted by in categories: biological, chemistry, particle physics

Researchers from Tokyo Metropolitan University have developed a new technology which allows non-contact manipulation of small objects using sound waves. They used a hemispherical array of ultrasound transducers to generate a 3D acoustic field that stably trapped and lifted a small polystyrene ball from a reflective surface. Their technique employs a method similar to laser trapping in biology, but adaptable to a wider range of particle sizes and materials.

The ability to move objects without touching them might sound like magic, but in the world of biology and chemistry, technology known as has been helping scientists use light to move microscopic objects around for many years. In fact, half of the 2018 Nobel Prize for Physics, awarded to Arthur Ashkin (1922–2020) was in recognition of the remarkable achievements of this technology. But the use of laser light is not without its failings, particularly the limits placed on the properties of the objects which can be moved.

Enter acoustic trapping, an alternative that uses sound instead of optical waves. Sound waves may be applied to a wider range of sizes and materials, and successful manipulation is now possible for millimeter-sized particles. Though they haven’t been around for as long as their optical counterparts, acoustic levitation and manipulation show exceptional promise for both lab settings and beyond. But the that need to be surmounted are considerable. In particular, it is not easy to individually and accurately control vast arrays of ultrasound transducers in real time, or to get the right sound fields to lift objects far from the transducers themselves, particularly near surfaces that reflect .

Jul 30, 2021

Chinese giant CATL launches a commercial salt-based battery for EVs

Posted by in categories: chemistry, energy

The future of energy storage is getting better. Welcome salt batteries! cheaper & more abundant than lithium!

It is claimed to have an energy density of up to 160 Wh/kg, which is a far cry from the density offered by lithium batteries of up to 285 Wh/kg, but is nothing to sneeze at in the world of sodium batteries. It can also be charged to 80 percent capacity in 15 minutes at room temperature, and maintain 90 percent of its capacity in temperatures of-20 °C (−4 °F).


A cheap and abundant material like salt might have plenty to offer the world of science, and one field where it could have game-changing effects is battery chemistry. Leveraging salt could help us avoid much of the cost and difficulty in sourcing scarcer lithium, and Chinese giant CATL is looking to lead the charge by launching its first commercial sodium-ion battery.

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Jul 29, 2021

A single-molecule laser nanospectroscopy technique with micro-electron volt energy resolution

Posted by in categories: chemistry, computing, nanotechnology

When molecules are excited, they can give rise to a variety of energy conversion phenomena, such as light emission and photoelectric or photochemical conversion. To unlock new energy conversion functions in organic materials, researchers should be able to understand the nature of a material’s excited state and control it.

So far, many scientists have used spectroscopy techniques based on in research focusing on excited states. Nonetheless, they were unable to use light to examine nanoscale materials, due to its limitations in so-called diffraction. The spectroscopic measurement methods applied to electron and scanning probe microscopes that can observe substances with atomic resolutions, on the other hand, are still underdeveloped.

Researchers at RIKEN, the Japan Science and Technology Agency (JST), University of Tokyo and other Institutes in Japan have recently developed a laser nanospectroscopy technique that could be used to examine individual molecules. This technique, presented in a paper published in Science, could open up new possibilities for the development of various new technologies, including light-emitting diodes (LEDs), photovoltaics and photosynthetic cells.

Jul 29, 2021

World’s cheapest energy storage will be an iron-air battery, says Jeff Bezos-backed start-up

Posted by in categories: chemistry, energy

Form Energy, the billionaire-backed start-up that claimed to have developed an innovative low-cost 150-hour battery, has finally revealed its battery chemistry after more than a year of high-profile secrecy.

The Boston-based company says its first commercial product is a “rechargeable iron-air battery capable of delivering electricity for 100 hours at system costs competitive with conventional power plants and at less than 1/10th the cost of lithium-ion”.

Jul 29, 2021

3D-Printed Tooling Enables DIY Electrochemical Machining

Posted by in categories: 3D printing, chemistry

When it comes to turning a raw block of metal into a useful part, most processes are pretty dramatic. Sharp and tough tools are slammed into raw stock to remove tiny bits at a time, releasing the part trapped within. It doesn’t always have to be quite so violent though, as these experiments in electrochemical machining suggest.

Electrochemical machining, or ECM, is not to be confused with electrical discharge machining, or EDM. While similar, ECM is a much tamer process. Where EDM relies on a powerful electric arc between the tool and the work to erode material in a dielectric fluid, ECM is much more like electrolysis in reverse. In ECM, a workpiece and custom tool are placed in an electrolyte bath and wired to a power source; the workpiece is the anode while the tool is the cathode, and the flow of charged electrolyte through the tool ionizes the workpiece, slowly eroding it.

The trick — and expense — of ECM is generally in making the tooling, which can be extremely complicated. For his experiments, [Amos] took the shortcut of 3D-printing his tool — he chose [Suzanne] the Blender monkey — and then copper plating it, to make it conductive. Attached to the remains of a RepRap for Z-axis control and kitted out with tanks and pumps to keep the electrolyte flowing, the rig worked surprisingly well, leaving a recognizably simian faceprint on a block of steel.

Jul 29, 2021

The Arctic Is Now Leaking Out High Concentrations of ‘Forever Chemicals’

Posted by in categories: chemistry, food

“The changing nature of sea ice, with earlier and erratic periods of thaw, could be altering the processing and release of pollutants alongside key nutrients, which in turn affects biota at the base of the marine food web,” says environmental chemist Crispin Halsall, from Lancaster University in the UK.


Polyfluoroalkyl and perfluoroalkyl substances (PFAS) are known as ‘forever chemicals’ because they don’t naturally break down in the environment. Now a new study reveals the increasing pace of Arctic ice melt is leaking more of these chemicals into the environment.

PFAS don’t originate in the Arctic, but they do settle there – they’re used in all kinds of human-made products and processes, from pizza boxes to foam used to fight fires. Once released into the atmosphere, they’re often trapped in Arctic ice floes.

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Jul 27, 2021

Scientists Develop ‘Food Generator’ That Turns Plastic Into Edible Protein

Posted by in categories: bioengineering, chemistry, food

Humanity has a plastic problem, but who said the problem couldn’t also be tasty? Scientists are trying to come up with creative solutions to address the ever-growing issue every day, with some even converting plastic bottles into vanillin using bacteria. Most recently, two scientists have echoed this sentiment and won the $1.18 million (1 million euro) 2021 Future Insight Prize in the process by creating a food ‘generator’ concept that turns plastics into protein.

The names behind the project, which was initially funded by a Defense Advanced Research Projects Agency (DARPA) cooperative agreement award for $7.2 million over four years, are Ting Lu, a professor of bioengineering at the University of Illinois Urbana-Champaign, and Stephen Techtmann, associate professor of biological sciences at Michigan Technological University.

Their goal was to improve a process for converting plastic trash into protein powder and lubricants using a combination of chemicals and high heat (pyrolysis). The two scientists call their project a food ‘generator.’

Jul 27, 2021

This little robot is cleaning up our beaches, one cigarette butt at a time

Posted by in categories: chemistry, robotics/AI

Cigarette butts are a common type of litter for marine environments but AI-powered robot litter pickers could be the solution.


It seems many people leave behind more than just sandcastles when they go home after a trip to the beach. Beach litter is a recurring issue, and it is damaging our coastal environments and wildlife.

And there is one small item that is causing a big problem: cigarette butts. They may only be a few centimetres long, but they are full of microplastics and toxic chemicals that harm the marine environment. They don’t easily decompose, and when they come into contact with the water, harmful substances can leach out.

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