1. Industry Background: Battery Innovation Driven by E-Mobility
With the rapid development of the global e-mobility industry, battery technology has become a key driving force. According to data, global electric two-wheeler sales reached over 60–70 million units in 2024, with China accounting for more than 60% of the market
(Source: statista)
However, mainstream lithium-ion batteries are facing multiple challenges:
Resource constraints intensifying: Around 70% of global lithium resources are concentrated in South America’s “Lithium Triangle,” increasing supply chain risks
(Source:bnef)
Rising cost pressure: Raw materials account for as much as 60%–70% of lithium battery costs, making cost reduction a key priority for manufacturers.
Low-temperature performance limitations: Lithium iron phosphate batteries can experience over 30% capacity loss at -20°C, limiting expansion in colder regions.
Against this backdrop, sodium-ion batteries have gained increasing attention due to their abundant resources, cost potential, and strong low-temperature performance. Since 2023, companies such as CATL, BYD, and HiNa Battery have launched related products, accelerating industrialization.
2.Technical Principles and Key Advantages of Sodium-Ion Batteries
2.1 Basic Principles
Sodium-ion batteries operate on a similar “rocking-chair” mechanism as lithium-ion batteries. The charge and discharge process involves sodium ions moving between the cathode and anode.
Key differences include:
Working ion: Sodium ion (Na⁺) replaces lithium ion (Li⁺)
Anode material: Mainly hard carbon (no graphitization required, reducing cost)
Electrolyte system: Aluminum foil current collector (lower cost than copper foil)
sodium-ion battery working principle diagram
2.2 Key Advantages
Table 1: Sodium-Ion vs Lithium-Ion Battery Advantages
| Dimension | Sodium-Ion Battery | Lithium-Ion Battery | Advantage |
| Resource Availability | 6th most abundant, widely distributed | 27th, uneven distribution | More stable supply (Source: https://about.bnef.com/) |
| Material Cost | $80–100/kWh | $100–140/kWh | Theoretical reduction of 30%–40% (Source: https://www.mckinsey.com/) |
| Low-Temperature Performance | Operates at -40°C | Degrades at -20°C | Better for cold climates |
| Safety | Higher thermal threshold (~300°C) | Lower threshold | Higher safety |
| Fast Charging | 15 min to 80% | 30 min to 80% | Faster charging |
3. Applications of Sodium-Ion Batteries in E-Mobility
3.1 Electric Two-Wheeler Applications: Primary Market
China’s electric two-wheeler fleet exceeds 400 million units, with annual sales of 60–70 million units(Source:statista).
Sodium-ion batteries can effectively address key issues such as the heavy weight of lead-acid batteries and the high cost of lithium batteries.
Market projections indicate that by 2025, sodium-ion battery penetration in two-wheelers will reach 8%–12%, corresponding to 5–8 million units.
3.2 Urban Short-Range E-Mobility
In A00-class micro electric vehicles (range of 200–300 km), sodium-ion batteries can enter the shared mobility and short-distance commuting market through cost advantages.
3.3 Logistics and Closed-Loop Scenarios
In ports, mining areas, and other controlled environments, electric heavy-duty vehicles are less sensitive to weight. In these scenarios, the safety and cost advantages of sodium-ion batteries can be effectively utilized.
3.4 Battery Swapping and Shared Mobility
Standardized battery compartment designs can accommodate sodium-ion battery modules, while the “battery-vehicle separation” model reduces upfront vehicle costs for users.
sodium-ion battery applications share in e-mobility
4.Comparison Between Sodium-Ion Batteries and Lithium-Ion Batteries
4.1 Cost Curve Outlook
With large-scale production, sodium-ion battery costs are expected to reach parity with lithium iron phosphate batteries around 2027.
sodium-ion battery vs lithium-ion battery cost trends 2020-2030
4.2 Performance Comparison
Table 2: Performance Comparison
|
Parameter |
Sodium-Ion Battery |
LFP Battery |
Ternary Lithium Battery |
|
Energy Density |
100–160 Wh/kg |
160–200 Wh/kg |
200–280 Wh/kg |
|
Cycle Life |
2,000–4,000 cycles |
4,000–6,000 cycles |
2,000–3,000 cycles |
|
Operating Temperature |
-40°C to 60°C |
-20°C to 60°C |
-20°C to 55°C |
|
Charging Time |
15 min (0–80%) |
30 min (0–80%) |
30 min (0–80%) |
5.Applications of Sodium-Ion Batteries in E-Mobility
Currently, sodium-ion batteries in e-mobility applications are gradually moving into real-world use. HiNa Battery has applied sodium-ion batteries in electric two-wheelers, demonstrating strong low-temperature performance and cost advantages in delivery and urban commuting scenarios. Automakers such as JAC Motors have also introduced sodium-ion battery electric vehicle prototypes for short-range mobility testing.
At the same time, the Yadea Guanneng Shark II 90S-M, equipped with its “Aurora Sodium Battery,” represents an early commercial application of sodium-ion batteries in electric scooters. In addition, sodium-ion technology is being tested in battery swapping systems and shared mobility solutions, indicating a transition from pilot projects to early-stage commercialization.
5. Future Trends and Outlook
5.1 Industrialization Timeline
2024–2025: Small-scale production and pilot applications.
2026–2027: Large-scale capacity expansion and cost reduction.
After 2028: Complementary coexistence with lithium batteries.
5.2 Key Technology Development Directions
Increasing energy density: Target above 200 Wh/kg through cathode material optimization.
Extending cycle life: Improve electrolyte formulations to exceed 6,000 cycles.
Full value chain cost reduction: Optimization across materials and manufacturing.
global sodium-ion battery market size forecast 2023-2030
Table 3: Global Sodium-Ion Battery Market Forecast (2023–2030)
|
Year |
Market Size (USD Billion) |
Growth |
|
2023 |
5.3 |
- |
|
2024 |
8.7 |
64% |
|
2025 |
14.2 |
63% |
|
2026 |
22.5 |
58% |
|
2027 |
35.8 |
59% |
|
2028 |
52.4 |
46% |
|
2029 |
78.6 |
50% |
|
2030 |
112.3 |
43% |
(Source:grandviewresearch)
Sodium-ion batteries are becoming an important complementary technology in the e-mobility sector.
In the short term, adoption will focus on electric two-wheeler applications and battery swapping systems. In the long term, sodium-ion technology is expected to contribute to a more diversified battery ecosystem.
PXID will continue to track advancements in sodium-ion battery technology and promote its integration into e-mobility products, delivering more efficient and safer solutions.
FAQ
Sodium-ion batteries store energy by moving sodium ions between electrodes, similar to lithium-ion batteries. PXID sees them as a cost-effective alternative.
Key sodium-ion battery advantages include abundant resources, lower cost potential, better low-temperature performance, and higher safety.
In sodium-ion battery vs lithium-ion battery, sodium offers lower cost and better cold performance, while lithium leads in energy density.
Yes, sodium batteries for electric scooters reduce cost and improve cold-weather performance, making them suitable for urban mobility.
Sodium-ion batteries are not full replacements but complement lithium batteries in cost-sensitive and short-range applications.
Typical sodium-ion battery energy density ranges from 100–160 Wh/kg, lower than lithium but improving with new materials.
Sodium-ion batteries perform well in low temperatures, maintaining stable output even at -20°C or below.
Main sodium-ion battery applications include electric two-wheelers, battery swapping systems, and short-range vehicles.
Yes, sodium-ion batteries have higher thermal stability and lower risk of thermal runaway compared to lithium batteries.
Sodium-ion batteries in e-mobility are expected to grow rapidly, especially in two-wheelers and shared mobility systems.
For more information about PXID ODM services and successful cases of electric bicycles, electric motorcycles, and electric scooter design, and production, please visit https://www.pxid.com/download/
or contact our professional team to obtain customized solutions.
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