Car batteries do not use supercapacitors mainly for the following reasons:
Car batteries have higher requirements for energy density, and the energy density of supercapacitors is lower, which cannot meet the requirements of car batteries.
Although the charge and discharge capacity of supercapacitor is very strong, its life is short, and the number of charge and discharge is less, which can not meet the needs of long-term use of automobile batteries.
The cost of supercapacitors is higher, the price is more expensive, and the cost is higher for the product that needs a lot of use, such as the car battery, and it is not competitive in the market. In summary, the application of supercapacitors in the field of automotive batteries is less, and lithium batteries are still the main ones.