Sodium-ion batteries and lithium-ion batteries differ in several aspects, as outlined below:

1.Performance aspect:
（1）Energy density: The energy density of lithium-ion batteries is usually higher than that of sodium-ion batteries, which means that they can store more electrical energy within the same weight and volume. This makes them more suitable for use in devices with high battery demand, such as electric cars.
（2）Cycle life: The cycle life of lithium-ion batteries is generally longer, as they can withstand more charging and discharging cycles.

2.Cost aspect:
（1）Raw material costs: Sodium resources are plentiful and distributed globally, resulting in relatively low costs. This gives sodium-ion batteries a cost advantage.
（2）Manufacturing costs: The manufacturing process for sodium-ion batteries is not yet as mature as that for lithium-ion batteries, and the cost advantages of large-scale production have not been fully realized.

3.Safety aspect:
（1）The thermal stability of sodium-ion batteries is generally better, and their safety may be slightly superior to that of lithium-ion batteries in certain situations.
4.Application scenarios:
（1）Lithium-ion batteries are widely used in consumer electronics and electric vehicles where high energy density and endurance are required.
（2）Sodium-ion batteries are expected to play a role in large-scale storage and slow electric vehicles where costs are more sensitive.

In conclusion, lithium-ion batteries shine in energy density and cycle life, which makes them ideal for high-end applications; sodium-ion batteries have potential in cost and safety, and may achieve large-scale application in specific areas in the future. As technology advances, the performance and application scope of both types of batteries may change.

To unlock the full potential of sodium-ion batteries and create more opportunities for their public use, Qimei Company will continue to refine and develop sodium-ion batteries from various angles.