unveils its first-generation sodium-ion batteries, plans to establish an industry chain by 2023.

Chinese battery giant Contemporary Amperex Technology Co (CATL) on Thursday unveiled its latest technology breakthrough – a first-generation sodium-ion battery that beats widely used lithium batteries in fast charging and low-temperature performance. can give.

The CATL, President Robin Zeng Yukun revealed on Thursday that the energy density development target of next-generation sodium-ion batteries exceeds 200 watt-hours per kilogram.

CATL Unveils its First Generation of Sodium-ion Batteries And it plans to establish an industry chain by 2023.

Sodium-ion battery VS Lithium-ion battery Vs Lead-acid battery

Sodium-ion BatteryLithium-ion batteryLead-acid battery
Cost per Kilowatt Hour of CapacityNo data is available. Estimated to be similar to or somewhat less than Li-ion.$137 (average in 2020).$100–300
Volumetric Energy Density250–375 W·h/L, based on prototypes.200–683 W·h/L80–90 W·h/L
Gravimetric Energy Density (specific energy)75–150 W·h/kg, based on prototypes120–260 W·h/kg35–40 Wh/kg
Cycles at 80% depth of dischargeUp to thousands.3,500900
Cycling StabilityHigh (negligible self-discharge)High (negligible self-discharge)Moderate (high self-discharge)
Direct Current Round-Trip Efficiencyup to 92%85–95%70–90%
Temperature Range−20 °C to 60 °CAcceptable:−20 °C to 60 °C.Optimal: 15 °C to 35 °C−20 °C to 60 °C

Table Source: Wikipedia 

Sodium-ion Batteries- Cost & Benefits

Sodium-ion batteries have cost benefits, but industrialization will take time-

As a new type of battery, the sodium-ion battery has the advantages of abundant raw material reserves, low cost, is safer and are more environmentally friendly, etc., and has a relatively wide development space in the field of energy storage.

However, due to imperfect technology and immature production equipment, the industrialization of sodium-ion batteries is still a long way off, and achieving large-scale mass production may take more than 5 years.

In China, except for CATL’s plan to release its sodium-ion battery products in the near future, most other companies are in the technological exploration stage.

Related research shows that the raw material Cost of sodium-ion batteries is about 0.25 RMB/Wh, and the raw material cost of lithium iron phosphate batteries is more than 0.43 RMB/Wh. Sodium-ion batteries have significant advantages in raw material cost.

In addition, due to the high resistance of sodium-ion batteries and the ability to discharge to 0V, they are also more advantageous in terms of safety and storage, and transportation.

Although sodium-ion batteries have obvious advantages in raw material cost and safety, their low energy density cannot be avoided. At present, the energy density that sodium-ion batteries can achieve is about 100-150Wh/kg. 

The energy density of mainstream ternary lithium batteries has reached 250Wh/kg, and even the energy density of lithium iron phosphate batteries is about 180Wh/kg.


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