Electric Vehicle Battery Technologies

Germany built a battery that runs on salt and air — and never needs lithium At a quiet research center in Jülich, Germany, scientists are finalizing tests on a new class of grid battery that contains no lithium, no cobalt — just saltwater, iron, and a ceramic membrane. This is the world’s first scalable sodium-iron-air battery, and its performance is shocking the industry. Instead of relying on rare materials, this battery breathes. Oxygen from the air reacts with iron and saltwater to generate electricity. During charging, the system splits water molecules and stores energy in the form of oxidized iron. On discharge, the oxygen recombines — creating an energy loop powered by rust, salt, and air. The membrane is the real secret. Developed with micro-porous ceramics, it allows oxygen in but blocks corrosion, extending the life of the battery to over 25 years. This makes it ideal for wind and solar farms that need massive, long-duration storage — but without the ethical or supply chain issues of lithium. While it’s too bulky for smartphones, it’s perfect for energy grids, rural electrification, and even disaster recovery units. A pilot farm in Bavaria is now running entirely on wind power stored in these salt-air batteries — showing stable power even during cloudy weeks with no wind. The best part? Every component can be sourced locally, recycled easily, and manufactured cheaply. Germany plans to scale these units across industrial zones and power plants in the next decade — potentially cutting lithium imports by 40%. — in New York, NY, United States.

EV #batteries in the real world last nearly 40% longer than in lab tests. While new batteries continue to improve, there is now mounting evidence that EV batteries on the roads are exceeding expectations. This lowers the total cost of ownership for EV owners and also benefits the environment by getting more use out of each battery. How is this possible? In standard lab testing, the battery is subjected to rapidly repeated charge-discharge cycles using a constant rate of discharge. This is then used to estimate battery degradation rates. However, discharging power at a constant rate is not really how we drive. We might accelerate hard to get onto the freeway or be in stop-start traffic. And the battery is also not used for much of the time. In recent research from Stanford, 92 EV batteries were tested with different discharge patterns of a period of two years. The results? Batteries tested using real life scenarios degraded significantly slower than expected and had higher life expectancy than those tested under lab conditions. Even better, the more realistic the battery use, the slower the battery degraded. Also of note was that for personal use, the degradation associated with time had more of an impact than the degradation from charging and discharging. Other studies have found similar results, including one last year from GEOTAB using remote monitoring of data from 10,000 EVs. It found that improved battery technology is leading to slower degradation - around 1.8% per year, compared to 2.3% per year in 2019. With CATL announcing a new EV battery pack with a 1.5 million kilometre warranty last year, we're at the stage where the battery will outlast the vehicle. Link to story from The Driven is below. #energy #sustainability #automotive #emobility #energytransition

Breathtaking technological progress meets challenges in scaling up production and geopolitical upheaval. That's what it feels like to be in #batteries at the moment. Meanwhile, technological differentiation continues to advance. While lithium-ion technology will continue to dominate, emerging alternatives like solid-state and sodium-ion batteries are gaining traction. 📊 According to a Capgemini report surveying 750 senior executives, the top challenges for the battery industry include: ▪️ #Scaling inefficiencies: 68% of manufacturers struggle with high scrap rates and quality control at scale. ▪️ #Supplychain risks: 53% of leaders cite unstable access to battery materials like lithium, cobalt, and nickel. ▪️ #Skills shortages: 60% report a lack of talent in key areas such as thermal management and power electronics. ▪️ #Manufacturing limitations: 76% of battery manufacturers say they must upgrade or build new production lines for next-gen batteries. 📈 The report emphasizes the need for digital transformation, investment in talent, and industrial scale-up. Key strategies include: ▪️ Scalable #data infrastructure, digital twins, AI-powered analytics to improve quality and optimize production. ▪️ Accelerated gigafactory #expansion, leveraging building information modelling (BIM) and modular production. ▪️ #Circulareconomy initiatives, with improved battery recycling and second-life applications. 🔋 Meanwhile, there are daily reports of progress in #solidstatebatteries. The infographic shows an overview of the status quo. Small-scale production is about to start. Even if the timeline for the mass market adoption is still more than uncertain, the technology race is in full swing. China, for example, gathered all relevant actors in a research consortium last year and provided them with 6 billion CNY (780 million EUR) in funding. 👉 Capgemini report: https://lnkd.in/ep_t4556

🔋 China initiates a bold endeavor to revolutionize the electric vehicle (EV) market by forming a consortium, CASIP (中国全固态电池产学研协同创新平台), comprising government, academia, and industry leaders like CATL and BYD. 🚗 The goal is to establish a solid-state battery supply chain by 2030, leveraging advanced technologies including artificial intelligence. 🤝 Major battery manufacturers, representing six of the top ten global automotive battery makers, unite for this national effort, setting aside rivalries to contribute to innovation: CATL, BYD subsidiary FinDreams Battery, CALB, EVE Energy and Gotion High-tech 🏢 Government support is integral, with ministries like Industry and Information Technology actively participating, highlighting China's determination to lead in automotive technology. ⚡ Solid-state batteries offer enhanced safety, higher energy density, and increased design flexibility, driving global competition from companies like Toyota, Nissan, Volkswagen, and BMW. 🌐 Despite China's dominance in current automotive battery technology, challenges exist in solid-state battery industrialization, with Japanese companies holding significant number patents in this field. 🔬 Technological advancements, particularly in AI-powered research, are expected to expedite progress, with breakthroughs anticipated by 2030. 💼 China's early adoption and industrialization of solid-state batteries could disrupt the global EV market, offering unprecedented opportunities for Chinese companies while challenging established players like Toyota.

𝗗𝗘𝗘𝗣 𝗦𝗘𝗔𝗕𝗘𝗗 𝗠𝗜𝗡𝗜𝗡𝗚 - 𝗡𝗲𝘄 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗼𝘃𝗲𝗿𝗿𝗶𝗱𝗲 𝗻𝗲𝗲𝗱 𝗳𝗼𝗿 𝗗𝗲𝗲𝗽 𝗦𝗲𝗮 𝗠𝗲𝘁𝗮𝗹𝘀 New #BatteryTechnologies that don't need deep sea metals are already replacing today’s lithium nickel manganese cobalt (NMC/Li-NMC) #batteries. A major technical substitution to Lithium-Iron-Phosphate (LFP) batteries from NMC is also occurring right now. The pace is accelerating: China's BYD new vehicles use it exclusively. (Their price point is so good that 50-100% tariffs are being slapped on them because they are perceived as a threat to US domestic producers using more expensive NMC batteries). This rapid replacement of NMC batteries is reflected in market prices: #cobalt prices down 30% in 24 months and #nickel prices flatlining. #cobaltfree LFP batteries are increasingly coming on market* led by Tesla and BYD (the 2 largest EV manufacturers). ~90% of BYD’s domestic market cars use #LFP batteries without any deep sea metals. Tesla, as a US tech leader and big volume driver, have not used metals marketed by deep sea miners in 50% of their cars since '22. Their Powerwall 3 batteries will be LFP. Ford Motor Company and #VW are also planning to use LFP. #CATL, China’s biggest battery manufacturer, is also set to reduce the cost per kWh of its LFP cells by 50% by mid- year, paving the way for lower cost electric cars. As the IEA graph below shows, LFP is rapidly substituting NMC batteries explaining the drop in nickel and continued decline in cobalt prices. Aside from LFP, #SolidState and #sodium only batteries can offer a lot of the performance advantages at lower cost over traditional cobalt, nickel and manganese-based lithium-ion batteries if they reduce the amount of DSM mineral – which they mostly do. QuantumScape is an example of a manufacturer who holds a joint venture with VW and expects to fully commercialise their batteries by 2025. Technologies based on sodium are rising: #SodiumIon is another technology adopted by CATL + 30 other companies worldwide including Clarios Norton energy in the USA. Similarly they offer performance upsides at a lower cost; #SodiumSulphur is another technology developed in Australia that could also be a game changer. New non-DSM potential innovations to extract minerals exist: cobalt could be extracted from #SeaWater via #PassiveAbsorption. MIT 2019 research found modifying 76 Gulf of Mexico unused oil rigs could extract over 25% of USA’s 2017 consumption of cobalt. As well as battery technologies, many recycling and circular economy models are supported by the market, boosted by tax incentives and policies, especially in Europe and USA. Finally, minerals demand models vary widely, and a metals study commissioned by the International Seabed Authority itself found exhaustion of key minerals is NOT on the horizon. (see my previous posts below) *https://lnkd.in/e8mJSeXq, https://lnkd.in/e7Y-YEPc

Experimental investigation of Thermal Runaway in an actual electric vehicle offers invaluable insights & recommendations for the design of lithium-ion batteries. One such interesting study's findings are enlightening. When lithium-ion batteries are subjected to extreme conditions that lead to thermal runaway, the arrangement of cells within the battery pack plays a pivotal role in how the event unfolds. Vertically arranged cells were found to behave worse than those in a horizontal layout, indicating a higher susceptibility to damage and the propagation of thermal runaway. This discovery is critical for electric vehicle (EV) design and safety protocols, highlighting the importance of cell arrangement in mitigating the risks associated with battery fires. One of the most striking observations from the burned test electric vehicle was the transformation of the cathode, anode, and separator after a thermal event. The cathode surfaces were covered with off-white floccules, a mix of decomposed separator materials, cathode material ash, and the remnants of exothermic reactions. This layering of debris indicates the intense chemical transformations occurring during thermal runaway, which not only compromise the battery's structural integrity but also its chemical stability. The implications of this study carried out by Olona A.& Castejón L. for the design & safety of lithium-ion batteries in EVs are profound. The detailed analysis of cell damage and chemical changes provides invaluable insights into the vulnerabilities of lithium-ion batteries to thermal runaway. This knowledge is instrumental in guiding the development of safer battery designs, improving fire suppression and emergency response strategies, and informing regulatory standards for EVs. Moreover, the study's insights into the distribution of elements and compounds formed during thermal runaway offer a roadmap for first responders dealing with EV fires. Understanding the chemical composition of battery residues can aid in the development of specialized fire suppression techniques and safety protocols, reducing the risks to emergency personnel and the public. Studies such as this one are crucial stepping stones, providing the insights needed to navigate the challenges of thermal runaway and steer us toward a future where electric vehicles are synonymous not just with innovation and efficiency, but with unparalleled safety as well. The comprehensive analysis, accompanied by illustrative photographs and a comparative review of both new and tested lithium-ion NMC pouch cell components, was remarkable, offering profound insights from this study. For further details and exploration, a link to the complete paper is available in the comment section below. #lithiumionbatteries #electricvehicles #batteries Reference: Olona A, Castejón L. Influence of the Arrangement of the Cells/Modules of a Traction Battery on the Spread of Fire in Case of Thermal Runaway. Batteries. 2024; 10(2):55.

What if your AI could predict years of real-world performance after just days of testing? IBM Research has developed a new generation of AI-powered digital twins by applying foundation model techniques, the same deep learning architectures behind today's large language models (LLMs) to physical systems like batteries. Traditional digital twins (virtual simulations of real-world systems) have struggled because it’s incredibly hard to model the full complexity of physical systems accurately. IBM's innovation changes this: instead of manually building physics models, they train AI models on real-world sensor data to predict system behavior. These digital twins are data-driven, self-improving and can simulate complex behaviors with high precision. The first major application is in electric vehicle (EV) batteries, where IBM partnered with German company Sphere Energy. Developing and validating a new EV battery can take years because manufacturers have to physically test how batteries perform and degrade over time. Using IBM’s AI-powered digital twins, manufacturers can now simulate years of battery aging and usage after only a small amount of real-world testing. Sphere's models predict battery degradation within 1% accuracy, which wasn’t possible before with traditional simulations. Technically, IBM’s digital twins use a transformer-based encoder-decoder architecture (like a language model) but are trained on numerical sensor data (voltage, current, capacity, etc.) instead of text. Once trained, the model can generalize across different batteries or vehicles, needing only minimal fine-tuning — which saves huge amounts of time and money. The impact is huge: up to 50% faster development cycles, millions of dollars saved, and faster adoption of new battery technologies. Beyond EVs, this technology could also transform industries like energy, aerospace, manufacturing, and logistics by providing faster, real-time, AI-driven system modeling and predictive maintenance. Learn more: https://buff.ly/JAzctHa #IBM #IBMiX #AI#genAI

LMFP cathode materials have emerged as an upgraded alternative to LFP, offering 15-20% higher energy density (160-240 Wh/kg) through manganese's higher redox potential, while retaining LFP's safety advantages from its stable olivine structure. Though LMFP's energy density remains below ternary materials (200-320 Wh/kg), it bridges the gap between LFP and high-energy ternary cathodes, with improved low-temperature performance (75% capacity retention at -20°C vs LFP's 60-70%) and moderate cycle life (~2,000 cycles). Its avoidance of nickel and cobalt makes it more cost-effective and environmentally friendly than ternary options. However, LMFP faces technical challenges including low intrinsic conductivity (10⁻¹³ S-cm⁻¹) requiring carbon coating/nanostructuring, and dual voltage platforms (3.4V/4.1V) complicating battery management. The Jahn-Teller effect from excessive manganese content (>60%) causes structural distortion and capacity fade, necessitating careful Fe/Mn ratio optimisation. While cycle life trails LFP (2,000 vs 6,000 cycles), it still outperforms most ternary materials, with manufacturers achieving ~89% capacity retention after 2,000 cycles through doping and particle size control. Economically, LMFP's raw material costs are 30-40% lower than nickel-rich ternary cathodes, positioning it as a balanced solution for applications prioritising safety and moderate energy gains over maximum performance. As manufacturing processes mature, LMFP is gaining traction in electric vehicles where its combination of improved energy density, thermal stability, and lower environmental impact aligns with evolving industry requirements. #manganese #nickel #cobalt #lithium

Researchers at the Technical University of Munich (TUM) have developed a new material that could accelerate progress in solid-state battery technology. By partially replacing lithium in a lithium-antimonide compound with scandium, the team achieved record-breaking lithium-ion conductivity—over 30% higher than any previously reported material. This advancement stems from how scandium creates tiny gaps, or "vacancies," in the material's crystal lattice, allowing lithium ions to move more freely. Because the material also conducts electricity, verifying the results required specially adapted methods, as noted by researcher Tobias Kutsch. The results were confirmed in collaboration with TUM's Chair of Technical Electrochemistry. Lead scientist Prof. Thomas Fässler believes the breakthrough could serve as a blueprint for future materials, potentially extending to lithium-phosphorus systems with similarly efficient designs. Importantly, the material doesn't just conduct ions rapidly—it’s also thermally stable and can be produced using standard chemical techniques, making it a strong candidate for practical use, especially as an additive in battery electrodes. What makes this discovery particularly notable is its simplicity: while the previous record-holder relied on a complex lithium-sulfur system with five additional elements, the TUM team achieved better performance with just one additive—scandium. A patent has already been filed, and while more testing is needed before commercialization, the research opens the door to a whole new class of materials for energy storage. #Battery #RMScienceTechInvest

🔋 Sodium-Ion Batteries: From “Alternative” to Strategic Energy Solution 🌍 As the global energy transition accelerates, sodium-ion (Na-ion) batteries are no longer just a lab curiosity — they are rapidly becoming a serious complement (and in some cases alternative) to lithium-ion technologies. Based on the insights highlighted in the images, here’s why the industry is paying close attention 👇 ⸻ ⚡ Why Sodium-Ion Matters 🔹 Abundant & geopolitically resilient Sodium is everywhere — unlike lithium, which is highly concentrated in specific regions. This dramatically reduces supply-chain risk. 🔹 Lower material cost 💰 Sodium carbonate costs a fraction of lithium carbonate, translating into 30–40% system-level cost reduction. 🔹 Cobalt-free cathodes 🚫 No Co required → better ESG profile, lower ethical and price volatility risks. 🔹 Aluminum current collectors on both sides 🔩 Unlike Li-ion (which needs copper on the anode), Na-ion can use Al foil for both electrodes, further cutting cost. 🔹 Safe storage at 0% State of Charge 🛡️ A major advantage for logistics, shipping, and grid-scale storage. 🔹 Wider operating temperature window ❄️🔥 Better tolerance to extreme environments — ideal for stationary energy storage. ⸻ 🧪 The Chemistry Reality Check Not everything is perfect (yet): ⚠️ Graphite doesn’t work as an anode → hard carbon is required ⚠️ Cathode stability (air/moisture sensitivity) remains a challenge ⚠️ Structural transformations during Na insertion/extraction can impact cycle life ➡️ This is why the hunt for optimized electrodes (PBA, layered oxides, NVPF, hard carbon) is still ongoing. ⸻ 🧠 Layered Oxides: O3 vs P2 vs P3 🧩 The crystal structure matters — a lot. 🔹 O3-type ✔ High initial capacity ❌ Structural degradation & air sensitivity 🔹 P2 / P3-type ⚡ Faster Na⁺ transport kinetics ✔ Better rate capability ❌ Lower starting Na content → cell balancing challenges 👉 No “perfect” structure yet — but rapid progress is happening. ⸻ 🏭 Commercial Momentum Is Real 🚀 Na-ion cells are already reaching 120–160 Wh/kg at pouch-cell level. Players to watch 👀 🇨🇳 CATL 🇫🇷 TIAMAT 🇬🇧 Faradion (Reliance) 🇺🇸 Natron Energy / Novasis 🇸🇪 Altris AB This is no longer theoretical — industrialization is underway. ⸻ 🔮 Bottom Line 🔋 Sodium-ion will not replace lithium-ion everywhere. But for stationary storage, grid balancing, low-cost mobility, and emerging markets, it is shaping up to be a strategic, scalable, and sustainable solution. 💡 The future of batteries isn’t “Li-ion vs Na-ion” — it’s Li-ion + Na-ion, each optimized for where they make the most sense. ⸻ 👉 Curious how Na-ion could fit into utility-scale storage, microgrids, or emerging market deployments? Let’s discuss.