Summary
- 24M released new testing data for its Impervio battery separator
- The Impervio separator reduces the risk of battery fire and explosion by obstructing dendrite propagation
- Lab tests compared performance between high-nickel NMC/graphite cells with Impervio and conventional separators
- Impervio cells did not short or overheat during overcharge, while off-the-shelf cells exploded
- 24M expects to bring Impervio to market in 2025 or 2026 to address battery safety in EVs
Article
24M, a developer of lithium-ion battery technology, recently conducted testing on its Impervio battery separator to address the issue of battery-fire risk in electric vehicles (EVs), energy storage systems, and consumer applications. The Impervio separator was specifically designed to reduce the risk of overcharging, which can lead to metallic dendrite formation and internal shorts, resulting in a battery fire or explosion. According to 24M, Impervio obstructs dendrite propagation and prevents thermal runaway by monitoring the cell’s electrochemistry and enabling failsafe measures in the event of a potential short circuit.
To demonstrate the effectiveness of the Impervio battery separator, 24M conducted lab tests comparing the performance of a 10 Ah high-nickel NMC/graphite pouch cell with Impervio and an off-the-shelf nickel NMC/graphite pouch cell with a conventional separator. Both cells were fully charged and then subjected to overcapacity charging up to 100%. The cells with Impervio did not experience short circuits or overheating even after an hour of overcharging, while the off-the-shelf cells overheated due to dendrite-induced micro shorts within 15 minutes and exploded into flames after 38 minutes.
24M plans to bring the Impervio battery separator to the market by 2025 or 2026. Naoki Ota, President and CEO of 24M, emphasized the importance of battery safety in enabling the widespread adoption of EVs and achieving a sustainable energy future. Ota believes that innovations like Impervio are crucial in preventing battery fires and creating new opportunities for battery technology advancement, ultimately contributing to a safer and more efficient energy storage ecosystem.
The development and testing of the Impervio battery separator by 24M mark a significant advancement in addressing one of the major challenges facing the EV and energy storage industries – battery safety. By mitigating the risk of overcharging-induced dendrite formation and internal shorts, Impervio offers a solution to prevent thermal runaway and potential battery fires or explosions. The results of the lab tests demonstrate the effectiveness of Impervio in maintaining cell integrity and preventing catastrophic failure, highlighting its potential to enhance the safety and performance of lithium-ion batteries in various applications.
The Impervio battery separator is poised to revolutionize battery safety and innovation by providing a reliable solution to mitigate the risk of overcharging and thermal runaway in lithium-ion cells. With its ability to obstruct dendrite propagation and monitor electrochemistry for potential shorts, Impervio offers a proactive approach to preventing battery fires and ensuring the integrity of energy storage systems. 24M’s commitment to bringing Impervio to the market in the near future reflects its dedication to advancing battery technology and promoting the widespread adoption of electric vehicles and renewable energy solutions.
In conclusion, the testing data released by 24M for its Impervio battery separator showcases a breakthrough in battery safety technology that has the potential to revolutionize the EV and energy storage industries. By addressing the critical issue of overcharging-induced battery fires, Impervio offers a proactive solution to enhance the safety and reliability of lithium-ion cells, paving the way for a more sustainable and efficient energy future. The projected timeline for bringing Impervio to market and the company’s commitment to innovation underscore the importance of continuous advancements in battery technology to meet the evolving needs of the global energy transition.
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