Why the ternary lithium battery electric vehicle batteries are mostly?

Diaphragm is the most important component in the structure of the lithium battery, it is one of the internal components, is also the highest technical barriers, you can imagine the importance of it, but this is the most important materials, and technology at the present stage in China is not balanced, the diaphragm of the excellent performance is very important to improving the overall synthesis of lithium ion battery, but to the diaphragm performance requirements on the rise, but the technology no breakthrough, this is the single biggest reason, however, that is why the diaphragm why get industry reshuffle.