China's solid-state EV battery materials giant secures 8 new patents

Chinese battery materials company Tinci has secured eight new patents related to sulfide solid electrolytes for all-solid-state lithium batteries, underscoring its commitment to advancing solid-state battery technology for electric vehicles (EVs) and energy storage systems. Four patents focus on specific electrolyte formulations and preparation methods, while the other four address versions tailored for full solid-state battery systems. These innovations aim to improve battery safety, durability, energy density, and long-term performance under demanding conditions. Tinci emphasizes that these materials are designed for practical applications beyond laboratory testing. Currently, Tinci’s sulfide electrolyte program is in the pilot phase, with kilogram-scale samples supplied to battery manufacturers for evaluation. A mid-scale pilot production line is under construction, expected to be operational by mid-2026. The development leverages a liquid-phase reaction method adapted from Tinci’s existing lithium salt manufacturing technologies. The company’s strategic partnerships with leading Chinese battery makers, notably CATL and BYD, have evolved from procurement to deep technical