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Sodium-ion vs. lithium-ion: Tracking the battery race in 2026

Sodium-ion batteries are transitioning from technical promise to commercial reality in 2026, targeting electric vehicles and grid storage. China is accelerating this shift by exempting sodium-ion batteries from taxes while continuing to tax lithium batteries. In February 2026, CATL and Changan unveiled the first mass-production version of this technology. Market projections suggest the sodium-ion sector will reach US$8.64 billion by 2035. These batteries aim to reduce dependence on lithium and lower costs for energy storage and commercial EVs.

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⚡ Key Developments & Real-Time Context
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  • ✓ China has exempted sodium-ion batteries from taxes while lithium batteries remain taxed.
  • ✓ CATL and Changan unveiled the first mass-production sodium-ion battery in February 2026.
  • ✓ The sodium-ion battery market is projected to reach US$8.64 billion by 2035.
  • ✓ Sodium-ion batteries are being deployed for electric vehicles and grid storage.
🛡️ Source Corroboration: 13 independent reporting domains (90% confidence) ⏱ Read time: ~2 min

What changed

China introduced tax exemptions for sodium-ion batteries to support a 10 GWh commercial EV push.

Live updates

  1. China Drives Sodium-Ion Adoption via Tax Exemptions and Mass Production

    Sodium-ion batteries are transitioning from technical promise to commercial reality in 2026, targeting electric vehicles and grid storage. China is accelerating this shift by exempting sodium-ion batteries from taxes while continuing to tax lithium batteries. In February 2026, CATL and Changan unveiled the first mass-production version of this technology. Market projections suggest the sodium-ion sector will reach US$8.64 billion by 2035. These batteries aim to reduce dependence on lithium and lower costs for energy storage and commercial EVs.

    Why it matters

    Lithium-ion batteries currently serve as the primary power source for energy storage and electric vehicles. Sodium-ion technology offers a more abundant material base, potentially increasing resilience and reducing costs. The race centers on whether sodium can match the performance of lithium in commercial applications.

    What is confirmed

    • China has exempted sodium-ion batteries from taxes while lithium batteries remain taxed.
    • CATL and Changan unveiled the first mass-production sodium-ion battery in February 2026.
    • The sodium-ion battery market is projected to reach US$8.64 billion by 2035.
    • Sodium-ion batteries are being deployed for electric vehicles and grid storage.

    Still unconfirmed

    • China is targeting a 10 GWh commercial EV push for sodium-ion batteries.
    • Aeson Power demonstrated sodium-ion technology at All Energy Australia 2026.
    • CATL and INTILION signed a 3 GWh storage MOU highlighting parallel lithium and sodium pathways.

    What to watch next

    • Verification of the 10 GWh commercial EV target in China
    • Performance data from the first mass-produced CATL and Changan batteries
    • Actual battery specifications for the CATL and INTILION 3 GWh storage project
    Sources used for this update (12)
    1. interestingengineering.com — Archimedes' screw inspires molecular motor that boosts current 100 times
    2. Interesting Engineering — Sodium-ion vs. lithium-ion: Tracking the battery race in 2026
    3. CarNewsChina.com — China exempts sodium-ion batteries from tax as Hina targets 10 GWh commerical EV push
    4. 스타뉴스 — “Lithium batteries taxed, sodium batteries exempt”... Chinese government outlines direction for next-generation battery development
    5. Yahoo Finance — Aeson Power Demonstrates the Versatility of Sodium-Ion Technology at All Energy Australia 2026
    6. openPR.com — Sodium-Ion Battery Market to Reach US$8.64 Billion by 2035 |
    7. IDTechEx — Sodium-Ion Batteries: From Technical Promise to Commercial Reality
    8. interestingengineering.com — Sodium-ion vs. lithium-ion: Tracking the battery race in 2026
    9. nbkomputer.com — Solid State Vs Lithium Ion The 2026 Energy Pivot – NBKomputer
    10. biztoc.com — Sodium-ion vs. lithium-ion: Tracking the battery race in 2026
    11. article.wn.com — Sodium vs. lithium: Which battery technology will power the ...
    12. lythpower.com — Lithium vs Sodium-Ion Storage: Why Chemistry Is Not a ...
    confidence 90%
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