Aug 24 (Reuters) - Group14 Technologies will supply battery materials to Europe"s InoBat under a partnership to manufacture high-energy density cells for electric vehicles, the companies said on Tuesday. Demand for high-capacity, lithium-silicon batteries has increased as manufacturers shift to electric vehicles to tap a rapid transition to cleaner sources of energy. InoBat, established in 2019, supplies batteries to automotive, commercial and aviation customers. "With this partnership with InoBat, we are taking a leap to enable automotive OEMs to meet and exceed cost-parity all while ... mitigating carbon emissions on a global scale," said Group14 Chief Executive Officer Rick Luebbe. Last month, Washington-based Group14 announced a joint venture with gas manufacturer SK Materials Co Ltd (036490.KQ) to build a factory for lithium-silicon battery materials in South Korea.