Due to its size and booming economy， China is now the world’s largest auto market， and industry analysts predict sales of 20 million cars in 2012 alone. Hence， the government is looking for greener alternative to gasoline to power their cars， trucks and buses. Although battery-driven cars today make up a small portion of the market， hybrid cars in China should still exceed 200，000 this year. In addition， there are approximately 125 million battery-driven bicycles on the road. A key component of such vehicles is their batteries. Lithium-ion cells， the technology that powers most laptop computers， cell phones and other electronic devices， are the most popular type used in hybrid cars because the cells are smaller and lighter than alternative batteries. China produces revenues of $3.6 billion in lithium ion batteries each year.