CATL's 'One Shell, Two Cells' Paves Way for Sodium-Ion in ASEAN

A New Era in Battery Technology for ASEAN Factories \\[CATL, China’s leading battery manufacturer, has introduced a groundbreaking battery pack architecture that allows both sodium-ion and lithium-ion batteries to be housed within the same enclosure. This innovation, known as “One Shell, Two Cells,” was unveiled during an industrial research event organized by China’s Ministry of Industry and Information Technology (MIIT) News Centre and reported by Securities Times. The design uses a standardized battery enclosure capable of accommodating either type of cell without altering the pack’s physical dimensions. This modular approach could simplify large-scale battery deployment, streamlining production lines and reducing the need for redesigns across different vehicle platforms and energy storage systems. For factories in Thailand, Vietnam, Indonesia, and Malaysia, this means greater flexibility and cost efficiency in their energy storage solutions. \\[The announcement comes at a time when the battery industry is seeking alternatives to lithium-ion technology, particularly in regions with extreme cold temperatures. Sodium-ion batteries are seen as a viable solution due to their superior performance in cold conditions. In Xinjiang, where winter temperatures can drop below -25°C, lithium iron phosphate batteries often suffer from slower charging and significant capacity losses. Sodium-ion batteries, on the other hand, maintain better performance in such environments. This makes them an attractive option for factories in colder regions of ASEAN, such as high-altitude areas in northern Thailand or mountainous regions in Vietnam. \\[The new architecture also holds promise for battery-swapping networks, which are becoming increasingly popular in urban areas. The same station infrastructure could support sodium-ion packs in colder regions while continuing to use lithium-based batteries in warmer areas. This flexibility could be particularly beneficial for countries like Indonesia and Malaysia, where diverse climates and varying temperature ranges require adaptable energy solutions. \\[Beyond the pack design, CATL and its suppliers have made significant progress in improving the durability of sodium-ion batteries. They have achieved a 15,000-cycle benchmark, which translates to an operational lifetime of up to 20 years in stationary storage and other high-use applications. Cathode supplier Ronbay Technology has developed sodium iron phosphate materials that surpass 15,000 charge-discharge cycles while enhancing electrode density. Meanwhile, Wanhua Chemical is working on reducing reliance on imported biomass feedstocks used in hard-carbon anodes, aiming to lower costs and strengthen domestic supply chains. \\[For factory buyers in ASEAN, the implications are clear: the “One Shell, Two Cells” design offers a versatile and cost-effective solution for energy storage. By allowing the use of both sodium-ion and lithium-ion batteries, manufacturers can optimize their operations based on local climate conditions and energy needs. This innovation not only enhances the reliability and longevity of energy storage systems but also paves the way for more sustainable and efficient energy management in the region. As the battery industry continues to evolve, ASEAN factories stand to benefit from these advancements, ensuring they remain competitive and resilient in the face of changing energy demands.]