Craig Wohlers’ Post

Anode-Free Lithium Metal Batteries at QuantumScape with Cheng-Chieh Chao from QuantumScape. Today’s conventional lithium-ion batteries fall short of meeting the needs of many automotive, consumer electronics, and stationary storage applications. Many believe that the unique cell design of solid-state lithium-metal batteries will help bridge this gap – particularly when it comes to electric vehicles – because the technology is designed to enable longer range, faster charging and enhanced safety compared to conventional lithium-ion batteries. In this talk, QuantumScape's Vice President of Cathode, Cheng-Chieh Chao, will highlight recent developments in solid-state lithium-metal technology and review some of the challenges in transitioning from research and development to a commercial product. https://lnkd.in/davw7MK #CET4SolidState

🔋 NEO Battery Materials has signed a joint development agreement with a North American battery cell manufacturer to enhance #silicon #anodetechnology for electric vehicles and mobility applications. The collaboration focuses on optimizing silicon anode materials to improve lithium-ion battery performance: Read more: https://lnkd.in/eiN9CvMN #batterytech #batterymaterials #electricvehicles Daniel Y. Lim, CPA (WA), Spencer Huh

🔋 Last week CATL unveiled Shenxing PLUS—the world's first LFP battery that achieves a range above 1,000 kilometers with 4C superfast charging. Drawing on the impressive advancements of LFP cells by industry leaders , it's clear that combining multiple small innovations is essential for reaching such milestones. Among these innovations, carbon-coated Al foil plays a pivotal role, enhancing the overall battery performance by improving conductivity and battery life. Based on our research, CNT-coated Al foil takes this a step further, offering even greater performance enhancements than traditional Carbon Black coated Al foil, especially when looking at cycle life benefits. As shown in the data provided, while Blank Al Foil displays substantial capacity at various discharge rates, the CNT Coated Al Foil demonstrates superior capacity retention, especially at higher rates. This suggests that LFP batteries utilizing CNT-coated Al foil can deliver high energy densities and sustain performance even under the stress of rapid charging and discharging – essential for meeting today's high expectations of LFP cell performance. #LFP #Cathode #Battery #Nanomaterials #BatteryTechnology

🔍 Is Silicon Worth It - Molicel P50B Edition! 💡 Group14 recently announced it was the key enabler of “breakthrough performance” in Molicel’s ultra-high-power P50B lithium-ion battery cells. 🚗 This may be the first advanced silicon material About:Energy has seen in our labs, and we may see this material in mass-market EVs very soon after a $400 million Series C investment that included Porsche Ventures. Despite silicon providing more energy and power density in batteries, there are some challenges: 📈 Lifetime Prediction - Traditionally, adding more silicon reduces battery life. However, our results show with the new P50B formulation, we have seen a significant increase in lifespan compared to the P45B under certain conditions. The trend may be different as we gather more data on these high-performance batteries. 🔋 Battery Management - One challenge with silicon is hysteresis. Voltage hysteresis in batteries refers to the difference in voltage during charging and discharging at the same state of charge. In silicon-based batteries, it is significant due to a large intrinsic hysteresis of the silicon material because of chemical and mechanical changes during lithiation and delithiation. 🔧 We are developing an advanced hysteresis model, providing companies with the confidence to use these batteries without reinventing their modelling processes.

Solid-state batteries could offer substantial performance and safety benefits over lithium-ion batteries, but only if manufacturers, electronics companies, and OEMs can navigate the path to commercialization without the benefit of insights derived from real-world use. Learn how Exponent’s advanced battery characterization and simulated failure scenarios can help stakeholders capture the promise of this emerging technology: https://hubs.li/Q02ZJq0G0 Keith Beers, Ryan Spray, Nicholas Faenza, Ph.D., P.E., CFEI, Lucienne (Lucy) Buannic, Wahid Zaman #Exponent #WhatCanWeHelpYouSolve #Batteries #AccidentInvestigation #FailureInvestigation

There is a lot of interest in silicon anode for EV batteries. Here is a short one pager for those interested. Today, the key focus of EV OEMs are the silicon technologies that (1) can reduce the cost of EV batteries to enable more affordable EVs with longer range; (2) can scale-up to large quantities required to support large volume EV battery production in existing factories with current EV-qualified suppliers; and (3) can reduce execution risks, ranging from process risks in coating electrodes to safety and to IP risks. To my knowledge, the SINANODE technology from OneD Battery Sciences is the only silicon technology today that meets all three of the above criteria. As we come to the end of 2024, I am very grateful for our R&D team in Palo Alto CA to have proven this with the building and testing of several hundred EV cell prototypes (with the help of cell partners and EV customers). I am also very grateful for our Pilot team to have completed in 2024 the SINANODE Pilot Plant in Moses Lake WA, and be ready to support customers with many tons per month of silicon-graphite anode materials in 2025 for the EV cell qualification process. #EVbattery #silicon #sinanode

More amazing news about Sionic Energy and Group14 Technologies 🚀

Charging in 10 minutes? With SCC55™, Sionic Energy’s 100% silicon battery delivers breakthrough performance for everything from personal vehicles to aviation. At Group14, we are powering silicon batteries globally – enabling extreme-fast charging in just minutes and delivering 50% more energy density than traditional lithium-ion batteries. Learn more from Interesting Engineering about how SCC55™ is transforming the silicon battery landscape: https://lnkd.in/equPP347

We at #BatterieIngenieure are interested in scientific solutions which can be employed in the field in the near future. Therefore, we are continuously experimenting and investigating batteries beyond what our customers request! In this context, we are glad to share with the battery community our new research paper on “Calendar ageing of commercial 18650 cells with nickel-rich cathode and graphite-silicon anode: Influence of check-up” published in Journal of Energy Storage, #elsevier. In this work, we analyze and quantify the effect of checkup frequency when performing accelerated aging tests. The results show that performing check up tests with different interval has a strong impact on aging behavior and on cell safety.   Free download for limited time under following link: https://lnkd.in/ei957z_4 Many thanks to all the authors and co-authors and all the people which have participated in fruitful discussions: Izaro Laresgoiti, Dr. Haohao Yi, Dr.-Ing. Dominique Koster, Fariba Karimi, Jiayi Yang, Dominik Schulte, Egbert Figgemeier   #lithiumionbatteries #BatterieIngenieure #Batterieingenieuregmbh #makeyourchallengeours

🔋 NEO Battery Materials has signed an MOU with OCSiAl Group to develop high-specification silicon anodes using single-wall carbon nanotubes. This collaboration could potentially enhance lithium-ion battery performance for electric vehicles and electronics. Read more: https://lnkd.in/edkVKWgx #BatteryMaterials #BatteryTech #LithiumIon #ElectricVehicles Danny Huh, Jinhyuk Lee, Daniel Y. Lim, CPA (WA), Spencer Huh, Ian Fellows, Yury Udaltsov, Royce Cheung, Leslaw Nowak, Grigory Gurevich, Ilya Mitelman, Konstantin Notman