Panasonic Energy has agreed a deal with UK battery startup Nexeon to purchase silicon anode material to improve the performance of lithium-ion batteries for EVs.
The material will be used for manufacturing the batteries at a new facility in De Soto, Kansas, starting from 2025.
Panasonic wants to expand battery production and increase cell energy density to enhance EV range. Increased energy density allows smaller and lighter cells with comparable range to current cells.
The company said silicon materials have about 10 times the theoretical capacity of the commonly used graphite anode. However, increasing silicon percentage faces hurdles due to expansion when charged, causing battery capacity fade.
Panasonic claimed it had developed technology to use silicon based materials and was “the first company to succeed in mass production of silicon-doped EV batteries”.
The company plans to improve volumetric energy density by 5% in 2025 and 25% by 2030.
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