BYD’s new solid-state battery patent reveals a dual-electrolyte cathode approach

BYD has filed a patent application for a cathode composite structure related to solid-state battery technology, which was published by the China National Intellectual Property Administration (CNIPA) on July 28, 2026, according to Sina. Patent application CN202510126712.6 (publication number CN122474592A) describes a material design combining halide and sulfide electrolyte components, but it does not confirm production plans, vehicle applications, or commercial availability.