CATL's solid-state battery patent
CATL filed a patent for a solid-state battery cell and electrolyte material [https://electrek.co/2026/03/11/solid-state-ev-battery-patent-reveals-catls-ambitious-plans] designed to overcome current industry limitations.
The new solid-state battery incorporates a cathode composed of a positive electrode active material, a positive electrode conductive agent, and a binder. It also contains a solid electrolyte layer and a negative electrode. CATL's design addresses challenges like poor interface compatibility and electrochemical performance in existing solid-state batteries. The battery is designed to reduce internal resistance and improve lithium-ion conductivity. This patent signals CATL's intent to compete with other companies developing solid-state batteries, such as Toyota and Solid Power. Solid-state batteries are expected to provide enhanced safety and energy density compared to current lithium-ion batteries.