Using its proprietary high ionic conductive electrolyte, Asahi Kasei has successfully achieved proof of concept (POC) of lithium-ion batteries (LIBs). This technological breakthrough allows for increased power output even at low temperatures and improved durability at high temperatures, both of which are pressing issues of current LIBs.
Additionally, this proof of concept (POC) of lithium-ion batteries (LIBs) can contribute to lower costs and smaller battery pack sizes, further raising the energy density.
It is advised to utilize LIBs in the 10 to 45°C temperature range. Higher temperatures cause rapid aging, which shortens battery service life, while lower temperatures result in smaller cell capacity, reduced power output, and longer charging times.
Particularly in the context of electric cars, the constantly expanding global market for energy storage systems makes consistent battery performance and good endurance at high temperatures crucial.
Enabling battery size and cost reduction
In the areas of lithium-ion battery research and battery material production, Asahi Kasei is a trailblazer. In 2010, with the attention of Honorary Fellow Akira Yoshino on acetonitrile as a viable chemical in lithium-ion battery electrolytes, Asahi Kasei started researching an electrolyte with excellent ionic conductivity.
High ionic conductive electrolyte makes it feasible to reduce battery pack size without sacrificing power output, which raises the energy density of the battery and lowers the cost of the pack as a whole. The anticipated advantages are displayed below.
Commercialization planned for 2025
The tested prototype cylindrical cells demonstrated significant power at -40°C and doubled the cycle life at 60°C before achieving a state of health (SOH) of 80%, in comparison to cells built with standard electrolyte. The goal is to go commercial in 2025.
Kazuya Noda, Senior General Manager of Asahi Kasei’s Innovation Strategy Center, commented, “This proof of concept is a technological breakthrough. By licensing the electrolyte technology to LIB manufactures worldwide, Asahi Kasei aims to contribute to lower cost and more compact battery systems, which are a key driver to achieve a more sustainable society.”
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