Lifeboat Foundation

In light of the ongoing shift toward renewable energy technologies and the growing number of Internet of Things (IoT) devices, researchers worldwide have been trying to develop batteries that can operate more efficiently and for longer periods of time. Lithium-ion batteries (LIBs) are currently the preferred energy-storage technology for portable electronics, as they contain organic electrolytes, which typically enable high operating voltages and energy densities.

Despite their widespread use, further increasing the performance of existing LIBs could have a significant impact on their safety. In fact, these batteries contain highly volatile and flammable organic carbonates, which, if ignited, can cause considerable damage.

In recent years, researchers have made significant efforts toward overcoming these safety issues, for instance, by using additional substances or by optimizing the materials separating battery components. While some of these strategies successfully reduced the risk of the battery catching fire, as long as LIBs are made with highly flammable electrolytes, accidents may still occur.

Justin Thomas considers bidets to be “a key green technology” because they eliminate the use of toilet paper. According to his analysis, Americans use 36.5 billion rolls of toilet paper every year, representing the pulping of some 15 million trees. Says Thomas: “This also involves 473,587,500,000 gallons of water to produce the paper and 253,000 tons of chlorine for bleaching.” He adds that manufacturing requires about 17.3 terawatts of electricity annually and that significant amounts of energy and materials are used in packaging and in transportation to retail outlets.

That’s a lot of water, far more than is actually used by the bidet itself.

Lloyd Alter/ toto toilet with washlet/CC BY 2.0

Lasers o.o

They could supply energy to far-flung bases, power laser weapons and charge electric vehicles.

Science and technology Mar 14th 2020 edition.

Continue reading “Nuclear power plants are coming to the battlefield” »

The new approach could even pave the way for 100 percent self-sufficiency in power, heat, and water.

Hybrid “power capacitors” that can store as much energy as lithium batteries, but with much higher charge/discharge rates, a huge range of safe operating temperatures, super-long lifespans and no risk of explosion are already in production, says a small Belgian company that’s been testing them and selling them for some time.

Chinese family-owned company Shenzhen Toomen New Energy is tough to find, at least on the English-language internet, but Belgian electronic engineer Eric Verhulst bumped into Toomen representatives on a tiny stand at the Hannover Messe expo in Germany back in 2018, while looking for next-gen battery solutions for an electric mobility startup he was running.

The Toomen team made a hell of a claim, saying they’d managed to manufacture powerful supercapacitors with the energy density of lithium batteries. “Of course, that’s an unbelievable claim,” Verhulst told us. “It’s a factor of 20 better than what, for example, Maxwell had at the time. So I took my time, went over there, looked at their tests, did some tests myself, and I got convinced this is real. So at the end of 2018, we made an agreement to become their exclusive partner.”

Nematic superconductivity with spontaneously broken rotation symmetry has recently been reported in doped topological insulators, M x Bi 2 Se 3 (M = Cu, Sr, Nb). Here we show that the electromagnetic (EM) response of these compounds provides a spectroscopy for bosonic excitations that reflect the pairing channel and the broken symmetries of the ground state. Using quasiclassical Keldysh theory, we find two characteristic bosonic modes in nematic superconductors: the nematicity mode and the chiral Higgs mode. The former corresponds to the vibrations of the nematic order parameter associated with broken crystal symmetry, while the latter represents the excitation of chiral Cooper pairs. The chiral Higgs mode softens at a critical doping, signaling a dynamical instability of the nematic state towards a new chiral ground state with broken time reversal and mirror symmetry. Evolution of the bosonic spectrum is directly captured by EM power absorption spectra. We also discuss contributions to the bosonic spectrum from subdominant pairing channels to the EM response.

Power systems and communication networks are increasingly interdependent, which can affect the response and recovery times when problems occur.

Today’s smart grid involves components that talk to each other, sending signals over communication networks to keep power flowing smoothly and efficiently. But what happens when the “conversation” goes quiet?

A team of researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory and the Illinois Institute of Technology recently explored the literature on this link between the power system and its communication networks, finding that many studies do not adequately consider the two-way nature of this relationship and its impact on grid resilience. Their paper, “Electric Power Grid Resilience with Interdependencies between Power and Communication Networks—A Review,” was recently published in IET Smart Grid, a journal from the Institution of Engineering and Technology.

Elon Musk was challenged to fix South Australia’s energy problem in 2017, and just two years on he’s saved Australians millions.