Asahi Kasei, a prominent Japanese technology company, has achieved proof of concept (POC) for lithium-ion batteries (LIBs) using its advanced high ionic conductive electrolyte. This technological breakthrough addresses critical issues such as enhanced power output at low temperatures and improved durability at high temperatures, which are significant challenges faced by current LIBs. Moreover, this innovation has the potential to reduce battery pack size and costs, thereby increasing overall energy density.
LIBs are typically recommended for use within a temperature range of 10 to 45°C. Operating below this range reduces cell capacity and power output while prolonging charging times. Conversely, higher temperatures accelerate aging, leading to reduced battery lifespan. With the global market for energy storage systems expanding rapidly, particularly in electric vehicles, maintaining stable battery performance and durability under extreme temperatures is crucial.
Enabling Battery Size and Cost Reduction Asahi Kasei has been at the forefront of lithium-ion battery research and material manufacturing. The company initiated electrolyte development with high ionic conductivity in 2010, focusing on acetonitrile under the guidance of Honorary Fellow Akira Yoshino. By leveraging this high ionic conductive electrolyte, Asahi Kasei aims to shrink battery pack sizes while maintaining power output, thereby enhancing battery energy density and reducing overall costs. The anticipated benefits include:
- Improved energy density
- Lower battery pack costs
- Enhanced power performance across temperature ranges
Commercialization Plans for 2025 Prototype cylindrical cells utilizing the new electrolyte exhibited robust performance, demonstrating high power output even at −40°C and double the cycle life at 60°C before reaching an 80% state of health (SOH). Asahi Kasei plans to commercialize this technology by 2025.
Kazuya Noda, Senior General Manager of Asahi Kasei’s Innovation Strategy Center, remarked, “This proof of concept represents a significant technological advancement. By licensing our electrolyte technology to LIB manufacturers worldwide, Asahi Kasei aims to drive down costs and streamline battery systems, crucial steps toward achieving a more sustainable society.
