Battery technology steering e-car sales

China is the world's largest market for electric cars and at the heart of this new energy drive is the lithium battery.

The country's electronic vehicle sales had surppassed that of the Europe and the United States since 2016, and will continue to lead until 2040, said a report by Bloomberg New Energy Finance released in the end of July.

In April, the government issued guidelines to raise the percentage of e-cars to more than 20 percent, or about 7 million vehicles, by 2025.