The latest round of patents shows Tinci accelerating solid-state battery research and sharpening its technological edge in the global EV materials market.
Chinese firm Tinci has recently secured eight patents from the National Intellectual Property Administration. The newly granted patents focus on sulfide solid electrolytes and their use in all-solid-state lithium batteries, a key area of innovation for the company.
Four of the patents cover specific electrolyte formulations and their preparation methods, while the remaining four relate to versions tailored for full solid-state battery systems. Combined, they create a cohesive technical framework aimed at enhancing safety, durability, and long-term performance.
Tinci noted that the materials are designed not only for controlled laboratory testing but also for practical, real-world battery applications, including electric vehicles and energy storage systems, where high energy density, long cycle life, and consistent performance under demanding conditions are critical.
Tinci advances sulfide electrolyte research as pilot line progresses
According to the company, the newly granted patents are not expected to influence day-to-day business operations in the near term, but they are intended to improve intellectual property protection and provide support for ongoing research into next-generation electrolytes.
Tinci’s sulfide electrolyte program is still in the pilot phase, with kilogram-level samples currently supplied to downstream battery manufacturers for evaluation. A mid-scale pilot production line is under construction and is scheduled for completion in mid-2026. The development process is based on a liquid-phase reaction method adapted from Tinci’s existing lithium salt manufacturing technologies.
Tinci’s role in the battery materials sector is closely tied to its long-running partnerships with leading Chinese cell manufacturers. The company entered CATL’s supply chain in 2015 and has since become one of the battery giant’s most important strategic suppliers, particularly in core electrolyte materials.
Over the years, this cooperation has evolved from standard procurement to deeper technical collaboration, with Tinci aligning its development roadmap to match CATL’s product upgrade cycle and performance targets.
Advancing solid-state technology with CATL and BYD
Last year, Tinci subsidiary Ningde Kaixin signed a major supply agreement with CATL to provide electrolyte products totaling about 64,600 short tons of solid lithium hexafluorophosphate for 2024 and 2025. The contract is designed to support roughly 410-470 gigawatt-hours of CATL battery production and is valued at approximately $1.38 billion.
The latest developments make Tinci a central figure in China’s solid-state battery ecosystem. With eight newly granted patents, ongoing pilot-scale production, and established supply relationships with major battery makers, including CATL and BYD, the company is strengthening its role in next-generation battery innovation.
Its sulfide electrolyte materials are currently being tested and integrated by leading cell manufacturers, helping to advance the development of high-energy-density batteries with extended cycle life. By providing these critical materials at the pilot scale, Tinci is enabling manufacturers to validate performance under real-world conditions and refine production processes
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