CATL Chairman Zeng Yuqun Says All-Solid-State Batteries Won’t Be Mainstream Before 2030

On June 23, at the Summer Davos Forum in Dalian, Zeng Yuqun, Chairman of Contemporary Amperex Technology Co. Limited (CATL), stated that all-solid-state battery technology is currently at Stage 4 of development and remains significantly distant from Stage 9—the mass production phase. He noted that all-solid-state batteries are still in an early technological stage, with the core bottleneck lying in solid-solid interface issues: differences in compaction density between various electrode materials and solid-state electrolytes can lead to structural misalignment under high pressure, resulting in increased internal resistance and accelerated cell degradation, making it difficult to achieve high-yield, large-scale manufacturing. Zeng emphasized that the advancement of solid-state batteries must simultaneously progress along three pathways—technology, product, and commercialization—addressing reliability, safety, and market acceptance. Even if breakthroughs occur in the future, initial applications will likely be limited to premium vehicle models, and achieving widespread adoption in the mass market before 2030 will be highly challenging.