Mary Lou Retton’s daughter McKenna Kelley first shared the news of her mother’s health in a post on her Instagram Story

By Maha El Dahan, Yousef Saba and Nadine Awadalla RIYADH The head of the International Monetary Fund (IMF)

The key to longer-lasting batteries may lie in soap, according to a new study. Scientists have developed a new promising substance used for designing batteries. They said it acts in a manner similar to soap removing grease, dirt and germs. Localised high-concentration electrolytes could be the “missing piece” that fully open the door to building longer-lasting batteries, said a recent study published in the journal Nature Materials. The key to longer-lasting batteries may lie in understanding how soap gets rid of dirt. It forms tiny structures called micelles that act as a bridge between water and what is being cleaned away by wrapping them into small structures. Scientists from Brown University said a similar process plays out in localised high-concentration electrolytes – described as one of the most promising substances for designing batteries. Electrolytes are key in the energy-storing process as they allow an electrical charge to pass between a battery’s two terminals. This sparks the chemical reaction needed to convert stored chemical energy to electricity. Batteries made from lithium metal have a greater energy storage capacity than today’s lithium-ion batteries. But the electrolytes commonly used to power lithium-ion batteries don’t do this effectively in metal-based batteries, researchers explained. “The big picture is that we want to improve and increase the energy density for batteries, meaning how much energy they store per cycle and how many cycles the battery lasts,” said study co-author Yue Qi from Brown University. “To do this, materials inside of traditional batteries need to be replaced to make long-life batteries that store more energy a reality – think batteries that can power a phone for a week or more, or electric vehicles that go for 500 miles,” Dr Qi said. Electrolytes for lithium-ion batteries are made of low-concentration salt dissolved in a liquid solvent. The new type of electrolytes, however, are created by mixing high concentrations of salt in a solvent with another liquid called a diluent. Scientists said this makes the electrolyte flow better so the power of the battery can be maintained. They also found the electrolyte functions like soap. “The paper provides a unified theory to why this electrolyte works better and the key understanding of it came by finding that micelle-like structures form within this electrolyte – like they do with soap,” said study co-author Bin Li from the Oak Ridge National Laboratory. “Here we see that the role of the soap or surfactant is played by the solvent that binds both the diluent and the salt,” Dr Li explained, “wrapping itself around the higher concentration salt in the center of the micelle”. While in lab tests, this type of electrolyte has shown promising results, how it works has remained elusive. This has put a cap on how effective it can be and how it can be further developed. The new understanding has, however, helped scientists develop the right concentrations needed to bring about optimal reactions for the batteries. “The concept of the micelle may be new for the electrolyte, but it’s actually very common for our daily life,” Dr Qi said. “Now we have a theory, and we have guidelines to get interactions we want from the salt, the solvent and the diluent in the electrolyte, and what concentration they have to be at and how you mix them.” Researchers said this new understanding could lead to introducing a proper balance of the three battery ingredients and also help extend the life of lithium-metal batteries. Read More Ireland and Apple await major development in long-running EU tax dispute Apple just released an iPhone update you should download right now Smartphones ‘may be able to detect how drunk a person is with 98% accuracy’ Ireland and Apple await major development in long-running EU tax dispute Apple just released an iPhone update you should download right now Smartphones ‘may be able to detect how drunk a person is with 98% accuracy’

(Reuters) -Morgan Stanley gave its next CEO Ted Pick and the other two contenders for the top job one-time awards

BOSTON & LOS ANGELES--(BUSINESS WIRE)--Jun 21, 2023--

The Detroit Lions have a short week to prepare to face the rival Green Bay Packers on the road with the NFC North lead at stake

Online sales during the crucial U.S. holiday season are expected to rise 4.8% from a year earlier as

Key takeaways and analysis from Manchester United's 3-2 loss to Galatasaray in the Champions League. Rasmus Hojlund was excellent but plenty of his teammates weren't.

Singer-songwriter Sufjan Stevens revealed on Wednesday that he's relearning how to walk after being diagnosed with Guillain-Barré syndrome, a rare neurological disorder in which the body's immune system attacks nerve cells.

'The Bikeriders' is now without a release date amid the continued Hollywood actors' strike.

Donald Trump is scheduled to appear in court today to be formally arraigned on charges of conspiring to overturn the 2020 presidential election, in what marks his third – and potentially most serious – criminal case. The former president was indicted on four charges by a grand jury hearing evidence in special counsel Jack Smith’s investigation in efforts to overturn the 2020 election and the January 6 Capitol riot. The indictment also described six unnamed co-conspirators, now believed to be identified. Mr Trump has been ordered to make an initial appearance in federal court in Washington DC on Thursday, while the case has been assigned to US district judge Tanya Chutkan, a Barack Obama-appointee. Mr Trump has railed against the indictment and is calling for the “fake” case to be moved from Washington DC. In a late-night Truth Social rant on Wednesday, the former president fumed that it is “IMPOSSIBLE to get a fair trial” in the capital and demanded it be relocated to “the politically unbiased nearby State of West Virginia”. This is Mr Trump’s third criminal indictment and his second federal indictment. Read Trump’s indictment from the January 6 grand jury in full Read More When is Donald Trump’s arraignment? Should Trump go to jail? The 2024 election could become a referendum on that question Trump supporters falsely claim special counsel seeking death penalty in indictment over 2020 election Former prosecutor explains why Donald Trump was the main focus of the January 6 indictment

Republican Virginia Gov. Glenn Youngkin’s main fundraising apparatus says it will soon report raising $5.75 million in this year’s second quarter