Sol-gel method for making nano-sized LiFePO4 / C for high performance lithium ion batteries

摘要

The present invention relates to a novel sol-gel process for synthesizing a uniformly carbon-coated LiFePO ₄ (LiFePO ₄ / AS). The method comprises mixing a lithium source, phosphorus source and carbon source with a solution comprising Fe ions to form a gel; And providing a LiFeP0 ₄ (LiFePO ₄ / AS), uniformly coating the carbon by baking the gel. According to the present invention, the phosphorus source is phosphonic acid.