High-performance low-cost positive plate and lithium ion battery

The invention provides a high-performance low-cost positive plate and a lithium ion battery, and relates to the technical field of lithium batteries, the positive plate adopts a polyacrylonitrile binder, the raw material source of the polyacrylonitrile binder is stable, the polyacrylonitrile binder mainly originates from chemical energy, and the polyacrylonitrile binder is hardly influenced by resource control, large-area production expansion and the like; and the polyacrylonitrile binder belongs to one of fluoride-free binders and is a green and environment-friendly positive electrode binder, polyacrylonitrile and polyvinylidene fluoride are mixed for use, so that the high-temperature performance of the battery cell can be effectively improved, the use requirements of terminal customers in the power market are further met, and the positive electrode binder has great significance in improving the market application prospect of products of battery manufacturers. And the method has important production practice