Sodium-ion batteries represent a new generation of energy storage technology that converts electrical energy through the intercalation of sodium ions (Na+) between the positive and negative electrodes. Their fundamental principle is highly similar to that of lithium-ion batteries, but they utilize abundant sodium resources instead of scarce lithium as the active material.

The truly disruptive power of sodium-ion batteries lies in their restructuring of the traditional battery material hierarchy. As the focus of energy storage systems shifts from a "performance-first" approach to a multi-dimensional balance of cost, safety, and sustainability, sodium-ion batteries are pioneering a new technological paradigm. This is driven by their absolute cost advantage and reliability redundancy in V2X applications.