What's causing the lithium-ion battery of electric vehicles to become less and less durable

1. It's not that the battery is bad, but it's more environmentally friendly. Most of the electric vehicle batteries (lead-acid) processed before 2013 are added with cadmium and arsenic. The addition of cadmium and arsenic to the plate alloy can improve the performance of the plate, increase the strength of the plate, and increase the crystal density of the plate, which is more resistant to corrosion. It can also increase the hydrogen evolution potential, and the battery is not easy to lose water, thereby prolonging the service life and improving the stability. But cadmium and arsenic have serious harm to the human body. After 2014, according to the 'Access Conditions for the Storage Battery Industry' formulated by the Ministry of Industry and Information Technology, the Ministry of Environmental Protection, and industry associations, it is clearly stipulated that the existing cadmium content is higher than 0.002% or the arsenic content is higher than 0.1% of the batteries and their lead-containing parts processing capacity It should be eliminated before December 31, 2013. The battery companies strictly abide by the national regulations. The batteries processed after 2014 meet the national standards and strictly control the content of cadmium and arsenic in the battery. Some companies have even introduced completely cadmium- and arsenic-free batteries. Objectively speaking, the battery without cadmium will cause the service life and The stability has declined to a certain extent, but from the long-term perspective of national development: it is not that the battery is not good, but that the battery is more environmentally friendly. 2. It's not that the battery is bad, but the pressure of the battery is greater. Many people say that the previous batteries have been used for a long time. The previous electric vehicles have low power, thin tires and light weight. Therefore, electric vehicles save electricity and run farther. Another important reason is that many of the batteries used in the past are A group of 3 knots is naturally better than the current group of 4 and 5 knots, and the consistency is easier to control. Today’s electric cars need to run fast, and the motor needs to be 500 watts, 800 watts or even higher; the tires need to be big, stable, and cool enough; the light bulbs are all vacuum bulbs, and some even modified xenon lights; the quality of the car is better. Well, it is heavier than before, the pressure on the battery is greater, and the use environment is worse, so the battery is used faster. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Comparison of the advantages of lithium-ion batteries and lead-acid batteries