CATL

Contemporary Amperex Technology Co., Limited — better known as CATL — is the undisputed leader of the global sodium-ion battery race in 2026, by nearly every measure that counts: production scale, technology breadth, customer reach, and R&D investment. Founded in 2011 in Ningde, Fujian Province by Robin Zeng, CATL holds roughly 37 percent of the global lithium-ion market and has leveraged that manufacturing infrastructure to move sodium-ion from announcement to mass production faster than any competitor. The company's sodium-ion journey began in July 2021 with a first-generation cell at 160 Wh/kg. By April 2025, CATL launched the Naxtra product family for vehicles, delivering 175 Wh/kg — a figure competitive with mainstream LFP and sufficient to enable pure-electric ranges above 500 kilometers in A-class passenger cars. The April 2026 unveiling of a dedicated BESS cell added a second product line targeting grid storage: a 300+ Ah format rated at 160 Wh/kg with a cycle life exceeding 15,000 cycles at 80 percent capacity retention, operating from -40 to 70 degrees Celsius with 97 percent energy conversion efficiency. Four major manufacturing challenges — extreme moisture control during cell assembly, suppressing gas generation from hard carbon anodes, achieving reliable aluminum foil bonding, and mass-producing self-generating anodes — were all resolved by 2026, according to CATL's chief scientist. The company has invested nearly 10 billion yuan (approximately $1.45 billion) in sodium-ion R&D alone. Commercial partnerships are broad: Changan Automobile co-developed the first mass-production sodium-ion passenger vehicle unveiled in February 2026, while GAC Group's Aion UT Super variant and JD.com's logistics fleet are named deployment partners. CATL's chairman projects sodium-ion will ultimately capture 30 to 40 percent of the existing battery market globally.