Tinci’s newest patents signal rapid progress in solid-state battery innovation and reinforce its competitive position in the global EV materials market.

The Chinese battery materials company has secured eight patents from the National Intellectual Property Administration, with a focus on sulfide-based solid electrolytes and their use in all-solid-state lithium batteries. Four patents address electrolyte formulations and production methods, while the other four apply to full solid-state cell systems. Together, they form an integrated technical pathway aimed at improving safety, lifespan, and performance consistency.

Tinci noted that the patented materials are designed for both controlled testing and real-world deployment, particularly in electric vehicles and energy storage systems requiring high energy density and long operational life.

Figure 1. Solid-State EV Battery.

Scaling sulfide electrolyte development

While the patents are not expected to affect short-term business operations, they strengthen intellectual property protection and support continued research into next-generation electrolyte technologies. Tinci’s sulfide electrolyte program remains in the pilot stage, with kilogram-level samples currently being tested by downstream battery manufacturers. A larger pilot line—based on a liquid-phase synthesis method adapted from its lithium salt expertise—is scheduled to be completed by mid-2026.

Tinci has longstanding ties with China’s top cell makers, having joined CATL’s supply chain in 2015. What began as a supplier relationship has evolved into deeper technical collaboration aligned with CATL’s next-generation product roadmap. Figure 1 shows Solid-State EV Battery.

Advancing solid-state ecosystems with CATL and BYD

In 2023, Tinci subsidiary Ningde Kaixin signed a major supply deal with CATL, covering around 64,600 short tons of solid lithium hexafluorophosphate through 2025—supporting 410–470 GWh of battery output and valued at approximately $1.38 billion.

With new patents, pilot-scale production, and strategic partnerships with major players such as CATL and BYD, Tinci is securing a pivotal role in China’s solid-state battery development landscape. Its sulfide electrolyte materials are now undergoing validation by leading cell manufacturers, marking an important step toward commercializing higher-energy, longer-lasting battery technologies.

References:

1. https://interestingengineering.com/energy/chinas-solid-state-ev-battery-materials

Cite this article:

Keerthana S (2025), Chinese Solid-State EV Battery Giant Wins Eight Patents for Future Battery Tech, AnaTechMaz, pp.306