Sodium-ion batteries: A technology brief

The global battery market is evolving at a remarkable pace. As renewables expand and electric vehicle (EV) deployment surges – with EVs expected to account for 90% of road transport by 2050 – batteries have become an important energy transition technology, driving both innovation and the demand for critical materials.

Lithium-ion batteries (LIBs) currently dominate the market, but supply chain disruptions and material price volatility have exposed the need to diversify battery technologies and material choices. Sodium-ion batteries (SIBs) are emerging as one of the most promising alternatives. Using widely available sodium and showing continuous improvements in performance, SIBs could reduce supply risks and strengthen the resilience of global battery supply chains.

With major producers announcing new breakthroughs and capacity expansions, this report examines the technology, its market outlook, and how sodium-ion batteries could reshape the EV battery landscape.