CATL confirmed that its Naxtra sodium-ion battery will see large-scale deployment across four sectors in 2026: passenger vehicles, commercial vehicles, battery swap stations, and energy storage systems. The Naxtra achieves up to 175 Wh/kg, which CATL claims is the highest energy density among sodium-ion cells globally. Range reaches up to 500 km, and cycle life exceeds 10,000 cycles.
Those numbers put sodium-ion squarely in LFP (lithium iron phosphate) territory for energy density, while potentially offering significant cost advantages. CATL first unveiled a sodium-ion prototype in July 2021. The Naxtra brand launched in April 2025. Now, four and a half years after the initial announcement, the technology is ready for mass deployment.
🔋 Why Sodium, Why Now
The timing isn't accidental. Battery-grade lithium carbonate prices hit 121,400 RMB per ton by late December 2025, a 50% increase in just three months. Lithium price volatility has been the EV industry's persistent headache, and sodium offers a fundamentally different supply equation. Sodium is the sixth most abundant element on Earth. It doesn't come from brine pools in the Andes or hard-rock mines in Australia. It comes from table salt.
CATL is positioning Naxtra as the complement to lithium, not the replacement. The company describes a "dual-star" strategy where sodium-ion and lithium-ion batteries serve different segments based on cost sensitivity, energy density requirements, and temperature performance. Sodium-ion cells perform better in extreme cold, which makes them particularly suited for northern Chinese provinces, Scandinavian markets, and commercial vehicles that operate year-round regardless of conditions.
The 10,000-Cycle Promise
Cycle life is where Naxtra gets interesting for fleet operators. At 10,000 cycles, a sodium-ion pack in a battery swap station or commercial van could outlast the vehicle itself. That dramatically changes the total cost of ownership calculation and makes battery-as-a-service models more viable. Maintenance costs drop because you're replacing packs less frequently, and residual value improves because the battery retains usable capacity longer.
CATL hasn't named specific vehicle partners or production volume targets for 2026. No charging rate specifications were provided in the December announcement either. The 175 Wh/kg density is competitive but not class-leading compared to NMC (nickel manganese cobalt) cells that regularly exceed 250 Wh/kg. Sodium-ion won't power the fastest or longest-range EVs. It will power the most affordable and the most durable ones. For CATL, that's a market worth billions: the $10,000-$20,000 EV segment where China is already dominant and where the rest of the world is barely competing.