12. EV Battery Chemistry: Sodium-ion and Localized LFP Production

Structural Mechanics

To reduce dependence on imported lithium-carbonate and cobalt, Indian EV technology companies have shifted R&D toward alternative battery chemistries. This includes localized Lithium Iron Phosphate (LFP) production and Sodium-ion (Na-ion) cell development. Sodium-ion chemistry is particularly suited for India's high ambient temperatures and the cost-sensitive two-wheeler, three-wheeler, and stationary grid-storage markets, as it eliminates cobalt and lithium from the cathode structure.

Data-Driven Metrics

• Abundance Profile: Sodium-ion cells utilize abundant sodium carbonate, reducing cathode raw material costs by up to 30% compared to nickel-rich chemistries.
• Thermal Tolerance: Na-ion cells maintain operational stability up to 60°C without runaway risks, reducing the weight and complexity of active thermal management systems.
• Energy Density: Local Na-ion prototypes have achieved energy densities of 150–160 Wh/kg, which is competitive with entry-level LFP cells.

Strategic Vector

The Ministry of Heavy Industries must expand the Advanced Chemistry Cell (ACC) PLI scheme to offer targeted subsidies for sodium-ion cell manufacturing lines.