@VicBee thx much for keeping this thread alive and updating with the latest articles. Battery technology is a very important topic as we rely on them so heavily ─ phones, tablets, laptops, watches, cameras, portable tools, EV's, medical equipment, emergency lighting, pacemakers, solar energy storage, alarm systems, etc. etc. Look forward to future updates.
https://greekreporter.com/2024/11/18/super-ev-battery-last-1-million-km/ Super EV Battery That Can Last 1 Million Kilometers Unveiled ByTasos Kokkinidis November 18, 2024 The manufacturer says the new battery can last up to 50 years, charges faster, and performs better in cold environments. Credit: Geely A Chinese carmaker has recently unveiled a lithium-iron-phosphate battery for electric vehicles (EVs) that it claims it can last for one million kilometers and up to 50 years. Geely, the Chinese carmaker closely associated with Volvo and Polestar, says it charges faster, performs better in cold environments, and withstands significant abuse, marking a significant leap in EV technology. The new design dubbed the ‘short blade’ is approximately 40 percent shorter than traditional blade batteries such as the ones famously manufactured by BYD. This compact structure is achieved through an improved diaphragm that enhances energy density and safety. Geely has utilized multi-element doped electrode materials to significantly reduce the internal chemical reaction rate, a key factor in extending the battery’s lifespan. Geely claims the battery can be charged 3500 times, equivalent to 1 million kilometers of driving, with minimal impact on battery range. This extended usage life not only enhances the residual value of second-hand EVs but also promises to reduce carbon emissions by over 80,000 tonnes annually. The cell boasts a capacity of 192Wh/kg. Comparative tests have shown the short-blade battery charges significantly faster than its long-blade counterpart. While the long-blade battery takes 26 minutes to charge from 10 percent to 80 percent, the short-blade achieves this in just 17 minutes and 4 seconds. Additionally, the short blade maintains 90.54% of its capacity at -30°C, compared to the long blade’s 78.96 percent retention. New safety features in the super EV battery Geely is particularly proud of the safety features integrated into the new battery. If the cell is punctured, an aluminum foil layer automatically fuses into the battery diaphragm, creating an insulating layer that prevents short circuits and thermal runaway events. The battery endured rigorous testing, including being punctured by eight 5 mm steel needles simultaneously and being shot with a 5.8 mm bullet, without any thermal ignition incidents. The new short-blade battery has undergone extensive testing to ensure its durability and safety. It was immersed in seawater, thrown into a fire, subjected to extremely cold environments, hit from the side, crushed by 26 tonnes, and scraped. Remarkably, the battery passed all these tests with flying colors, demonstrating its robustness and reliability. Geely has yet to announce when it will begin integrating these new batteries into its EVs. However, the advancements represented by the short-blade battery indicate a promising future for EV technology, with longer-lasting, safer, and more efficient batteries on the horizon. © Copyright - GreekReporter.com
https://www.thecooldown.com/green-tech/lg-ev-battery-safety-fires/ LG develops game-changing micro-technology that could resolve major concern with electric vehicles: 'A tangible research achievement' LG's patented material could soon become a part of safer packs powering EVs in a growing market. by Rick KazmerNovember 20, 2024 Electric vehicle battery component that's a hundred times smaller than the diameter of a human hair. But don't let the size fool you, as the material can prevent EV fires "like a fuse" by blocking "the reaction path" at the start of battery overheating. The material is an improvement on other solutions because it acts more quickly to stop fires, according to a news release from the South Korean company. "This is a tangible research achievement that can be applied to mass production in a short period," LG Chief Technology Officer Lee Jong-gu said in the summary. At issue are well-publicized EV battery fires that can be severe. It's important to note that while concerning, EVs are less likely to catch fire than gas-powered cars, as the Boston Globe reported. But no one will argue against a fireproof power pack, and that's what LG is working to provide. Fascinatingly, the ultra-thin material can change its molecular structure with battery temperature fluctuations, suppressing the current flow when needed. This prevents dreaded thermal runaway, a short-circuit causing temperatures to heighten uncontrollably to more than 1,800 degrees Fahrenheit, often leading to a fire. Once the temperature returns to a safe level, the material reverses operation, allowing current to flow again, as described by LG and ScienceDirect. LG's material performed well during battery impact and penetration testing. The latter analysis is a violent study where a nail is driven into a battery cell to cause a short circuit. The material either prevented a blaze altogether, or snuffed out flames quickly after forming, per LG's report. Battery safety is such a crucial metric — along with low cost, long range, and fast charge times — that researchers are trying to improve with each power pack generation. California's Liminal has developed inspection tech designed to catch battery cell flaws during production. The invention would prevent the defective components from entering service altogether, as another example of a safety innovation. Preventing battery overheating, thermal runaway, and fires can contribute to a positive cascade effect for consumers. Safer batteries can reduce anxiety among fire-wary vehicle buyers, nixing one of the hurdles to faster EV adoption. Since each EV that replaces a dirty-fuel-burning car prevents thousands of pounds of air pollution a year on average, per the U.S. Energy Department, the cleaner rides can help to limit our planet's overheating — which NASA has linked to an increased likelihood of severe weather events like coastal flooding and droughts. What's more, valuable tax breaks of up to $7,500 remain available to buy an EV. Savings on gas and maintenance costs can stack up to $1,500 a year, providing a number of savings that last throughout the EV's lifespan. LG's patented material could soon become a part of safer packs powering EVs in a growing market. Fortune called it the "fastest-growing vehicle segment in the U.S.," with 1.3 million EVs expected to be sold in 2024 alone. "We will enhance safety technology to ensure customers can use electric vehicles with confidence and contribute to strengthening our competitiveness in the battery market," Lee said in the LG news release. © 2024 THE COOL DOWN COMPANY. All Rights Reserved.
Graphene extends batteries life and efficiency Since Lithium-ion batteries have witnessed a growing application in portable electronics and electric vehicles, researchers are keen to improve their performance and cost further. In those efforts, researchers have made a promising discovery to enhance the life and performance of these batteries. https://www.techexplorist.com/graphene-extends-batteries-life-efficiency/93286/
A new era for batteries: Argonne leads $50M sodium-ion innovation push A $50 million consortium will develop sodium-ion batteries that will be a more sustainable and lower-cost alternative to lithium-ion technology and begin to foster an industrial ecosystem for sodium-ion batteries in the U.S. https://www.anl.gov/article/a-new-era-for-batteries-argonne-leads-50m-sodiumion-innovation-push
https://bgr.com/tech/first-of-its-kind-ev-battery-adds-186-miles-of-range-with-a-5-minute-charge/ First-of-its-kind EV battery adds 186 miles of range with a 5-minute charge By Joshua Hawkins Published Nov 25th, 2024 What if charging your electric car was as quick as grabbing a coffee? Thanks to an incredible breakthrough by ProLogium, that vision is becoming a reality. The company revealed a first-of-its-kind, cutting-edge EV battery that can deliver up to 186 miles of driving range after just five minutes of charging. This innovation is more than just a fast charge, though. ProLogium’s new EV battery is a leap forward in energy density. Traditional lithium-ion batteries, the kind in most EVs today, top out at about 300 watt-hours per kilogram (Wh/kg). However, ProLogium’s battery reaches an impressive 321 Wh/kg—and that’s just the start. The company claims it plans to further boost the performance of its cutting-edge EV battery up to 77 percent by the end of 2024. This could lead to lighter, more efficient batteries that don’t sacrifice range for a fast charging speed. Of course, this isn’t the first time we’ve seen EV batteries pushing the current boundaries of fast charging. What’s especially exciting about ProLogium’s development, though, is the battery’s modular design. If part of the battery breaks, you don’t have to replace the whole thing—just the damaged section. This could cut repair costs significantly and make EV ownership even more appealing, something EV manufacturers have been struggling to do. Sure, the Cybertruck might be appealing to some because of how off-the-wall it looks on the road. There’s no doubt that Tesla has made quite an imprint on the EV market. However, the widespread adoption of EVs is still far from what many would like to see it become. ProLogium’s new cutting-edge EV battery could help with that. This breakthrough is a big step toward making electric cars not just an eco-friendly option but also the most convenient one. With faster charging, longer range, and smarter designs, the future of electric vehicles has even more room to grow with batteries like this. BGR is a part of Penske Media Corporation. © 2024 BGR Media, LLC. All Rights Reserved.
https://www.thedrive.com/news/ev-ba...ed-because-weve-been-testing-them-wrong-study EV Batteries May Last Longer Than Expected Because We’ve Been Testing Them Wrong: Study University researchers say battery lifespan is almost 40 percent longer than originally predicted. Beverly Braga Scientists at the SLAC-Stanford Battery Center have released results of a new study which suggests current tests for EV battery range and degradation are all wrong. Although not really a huge surprise since, well, BEVs and ICEs are different species, one notable remark of the study, which was published in Nature, shines a light on the importance and influence of pedal pushing. “We’ve not been testing EV batteries the right way,” Simona Onori, an associate professor and one of three lead authors of the study, told the Stanford Report. Batteries are tested not unlike engines. In labs, life cycles are determined based on a constant rate of discharge followed by recharging, a cycle that is repeated ad nauseam until the battery succumbs. This includes the Environmental Protection Agency (EPA). The EPA methodology for projecting EV range doesn’t vary all that much from how the agency tests fuel economy in gas vehicles. One test is as simple as driving a fully charged vehicle until its range is exhausted. The EPA also uses a baseline formula instead of actual dynamic testing to account for efficiency variations such as ambient temperatures, HVAC use, and driving style. The Stanford study says this is producing misleading results. “Real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time, helps batteries last longer than we had thought based on industry standard lab tests,” said Onori. How much longer do the batteries actually last? Up to 38% longer. But we all like things translated into miles so that extra lifespan equates to “an underestimation of lifetime mileage of up to 195,000 miles.” Divided by the current average annual mileage of about 14,000 miles, and you’ve got another 14 years to drive a vehicle until its wheels fall off. Not only does stop-and-go driving extend the life of EV batteries, the spurts of acceleration and braking also mitigates degradation. What now? This is because batteries age in different ways: charge-discharge cycles and time. The assumption had been that charging cycles were more a factor in battery life than time itself. And that remains “mostly true” for commercial EVs like those used for public transportation and business use, which are in a constant state of use and charge. But researchers learned the errors of their ways, at least when it comes to the buying public. “For consumers using their EVs to get to work, pick up their kids, go to the grocery store, but mostly not using them or even charging them, time becomes the predominant cause of aging over cycling,” said Alexis Geslin, a lead study author and Stanford PhD student. Of course, the true lifespan of an EV battery can’t be determined through lab tests, no matter how “dynamic” they are. However, at least the new research provides a more realistic view as to the impact of charge-discharge cycles as well as identifies the potential balance between time and cycle aging.
Another 14 years??????????? No mention of accounting, in their testing, for weather in certain cold (and hot) regions of the world. Here in South Florida I've had good luck with vehicle batteries over 30+ years (most of the time garaged kept). Not so for many others I've talked to and from what I've read. As for average annual driving of (only) 14,000 miles, that's another one not many down here do.
https://interestingengineering.com/energy/li-ion-battery-five-million-miles 5 million miles: Breakthrough EV battery breaks record range, lasts over 20,000 cycles Using a synchrotron, the researchers were able to study the Li-ion batteries without taking them apart. Updated: Dec 10, 2024 08:16 AM EST Ameya Paleja A new type of lithium-ion battery with a single crystal electrode can withstand over 20,000 charge-discharge cycles before hitting the 80 percent capacity cutoff. Researchers at Dalhousie University studied the battery using an ultrabright synchrotron after it underwent continuous testing for six years. If it were fitted onto an electric vehicle (EV), this would roughly translate to a distance traveled of nearly five million miles (eight million km). While pushing the adoption of EVs, the US has also mandated by law that batteries retain 80 percent capacity even after eight years of operation. However, industry experts believe that technology needs to advance sufficiently so that batteries can outlast the vehicle itself. When such batteries are built, they can be bundled together and repurposed to store energy from wind and solar power plants after the EV reaches the end of its life cycle. For technology to reach this state, researchers need to understand the mechanism of battery degradation, and this is where the Canadian Light Source (CLS) at the University of Saskatchewan helped. Battery under a new light Funded by Tesla Canada and the Natural Sciences and Engineering Research Council (NSERC), researchers at Dalhousie University studied two types of lithium-ion batteries, one with a regular electrode and the other with a single crystal electrode under the ultrabright synchrotron light at CLS. “The great thing about doing this kind of measurement at a synchrotron is we can actually look at this at a microscopic level without having to take the cell apart,” said Toby Bond, senior scientist at CLS, in a press release. Inside a regular battery, lithium forces atoms of the electrode material to expand and contract, leading to microscopic cracking. “Eventually, there were so many cracks that the electrode was essentially pulverized,” added Bond. However, the battery with a single crystal electrode showed no such signs. Instead, the researchers could not distinguish between a new cell and a six-year-old one. Images show the degradation of a typical electrode of a lithium-ion battery over time. Image credit: Journal of The Electrochemical Society (2024). DOI: 10.1149/1945-7111/ad88a8 Snowball vs. ice cube The researchers have pinned down the striking difference between the two battery electrodes to the shape and behavior of their materials. The electrode of a regular battery comprises particles that are about 50 times thinner than human hair. But these particles, too, are composed of much smaller crystals and are held together like snowflakes in a snowball. On the other hand, the single crystal electrode is like a big ice cube, which is much more resistant to stress and strain. The researchers are confident that we are reaching the critical point where batteries will outlast other components of the car and not be its limiting factor anymore. “We really need these vehicles to last as long as possible, because the longer you drive them, the better its improvement on the carbon footprint is,” added Bond in the press release. Such batteries are also being manufactured commercially and should reach market in the following years. The research findings were published in the Journal of The Electrochemical Society.