Securing eight patents, China’s solid-state EV battery giant advances next-generation technology, aiming to enhance performance and efficiency.
Tinci, a leading Chinese solid-state EV battery materials firm, has secured eight patents from the National Intellectual Property Administration, bolstering its intellectual property portfolio for next-generation battery technology. The patents focus on sulfide solid electrolytes and their applications in all-solid-state lithium batteries, a key area of innovation for the company.
Four of the patents cover specific electrolyte formulations and preparation methods, while the remaining four relate to versions designed for full solid-state battery systems. Combined, the patents provide a technical framework aimed at improving safety, durability, and long-term performance.
The company said the patents will not immediately affect day-to-day operations but are intended to support ongoing research and strengthen IP protection. Tinci’s sulfide electrolyte programme remains in the pilot phase, with kilogram-level samples already supplied to downstream battery manufacturers for evaluation. A mid-scale pilot production line is under construction, expected to be completed by mid-2026. The development relies on a liquid-phase reaction method adapted from Tinci’s existing lithium salt manufacturing processes.
Tinci has longstanding partnerships with major Chinese battery makers, including CATL, which it joined in 2015. Its collaboration has evolved from standard procurement to deep technical alignment, supporting CATL’s product upgrade cycles. Tinci’s subsidiary Ningde Kaixin recently signed a supply deal with CATL to provide roughly 64,600 short tons of solid lithium hexafluorophosphate for 2024–2025, supporting 410–470 GWh of production, in a contract valued at about $1.38 billion. These patents are expected to further solidify Tinci’s role in advancing solid-state battery technology alongside partners such as CATL and BYD.
