British Startup Nyobolt Demos 4-Minute Battery Charging For EVs

Longtime Slashdot reader fahrbot-bot shares a report from CNN, written by Olesya Dmitracova: Nyobolt, based in Cambridge, has developed a new 35kWh lithium-ion battery that was charged from 10% to 80% in just over four and a half minutes in its first live demonstration last week. […] Nyobolt’s technology builds on a decade of research led by University of Cambridge battery scientist Clare Grey and Cambridge-educated Shivareddy, the company said. Key to its batteries’ ability to be charged super-fast without a big impact on their longevity is a design that means they generate less heat. It also makes them safer as overheating can cause a lithium-ion battery to catch fire and explode. In addition, the materials used to make the batteries’ anodes allow for a faster transfer of electrons. Nyobolt is currently in talks to sell its batteries to eight electric car manufacturers. At 35 kWh, the battery is much smaller than the 85 kWh in a more typical American electric vehicle (EV). Yet the technology may be used in larger battery packs in the future.

Independent testing of Nyobolt’s batteries by what it called a leading global manufacturer found that they can achieve over 4,000 fast-charge cycles, equivalent to 600,000 miles (965,600 kilometers), while retaining more than 80% of capacity, Nyobolt said in its Friday statement. William Kephart, an e-mobility specialist at consultancy P3 Group and a former engineer, said EV batteries of the kind Nyobolt has developed could “theoretically” be charged as fast as the firm is promising, but the challenge was manufacturing such batteries on an industrial scale. A crucial chemical element in Nyobolt’s batteries is niobium but, as Kephart pointed out, last year only an estimated 83,000 tons (94,500 tons) was mined worldwide. Compare that with graphite, commonly used as anode material in lithium-ion batteries: an estimated 1.6 million tons (1.8 million tons) was produced in 2023. In addition, there are currently “a lot of unknowns” with the niobium battery technology, he told CNN. “The industry will work it out (but) it’s not seen by the industry as a scalable technology just yet,” he added.

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Brazil Data Regulator Bans Meta From Mining Data To Train AI Models

Brazil’s national data protection authority ruled on Tuesday that Meta must stop using data originating in the country to train its artificial intelligence models. The Associated Press reports: Meta’s updated privacy policy enables the company to feed people’s public posts into its AI systems. That practice will not be permitted in Brazil, however. The decision stems from “the imminent risk of serious and irreparable or difficult-to-repair damage to the fundamental rights of the affected data subjects,” the agency said in the nation’s official gazette. […] Hye Jung Han, a Brazil-based researcher for the rights group, said in an email Tuesday that the regulator’s action “helps to protect children from worrying that their personal data, shared with friends and family on Meta’s platforms, might be used to inflict harm back on them in ways that are impossible to anticipate or guard against.”

But the decision regarding Meta will “very likely” encourage other companies to refrain from being transparent in the use of data in the future, said Ronaldo Lemos, of the Institute of Technology and Society of Rio de Janeiro, a think-tank. “Meta was severely punished for being the only one among the Big Tech companies to clearly and in advance notify in its privacy policy that it would use data from its platforms to train artificial intelligence,” he said. Compliance must be demonstrated by the company within five working days from the notification of the decision, and the agency established a daily fine of 50,000 reais ($8,820) for failure to do so. In a statement, Meta said the company is “disappointed” by the decision and insists its method “complies with privacy laws and regulations in Brazil.”

“This is a step backwards for innovation, competition in AI development and further delays bringing the benefits of AI to people in Brazil,” a spokesperson for the company added.

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