[SMM Analysis] Why Does Lithium Manganese Iron Phosphate Choose Mn3O4 as Its Manganese Source?

The specific process route for LMFP is still under exploration, with significant differences among various companies and no unified standards. As a result, the manganese sources used also vary, including manganese tetraoxide, manganese carbonate, manganese dioxide, and manganese oxalate, all of which are adopted by different companies. However, research has found that manganese tetraoxide is gradually becoming the mainstream choice. Leading companies in shipments, such as Hengchuang Nano and Ronbay Skaland, have also adopted this route. One important reason is that manganese tetraoxide is cheaper, offering significant economic benefits. Secondly, manganese tetraoxide is more suitable for the two-step sintering process. Thirdly, LMFP using manganese tetraoxide combined with iron oxide as raw materials can achieve a capacity per gram of 140-155mAh/g. Fourthly, its cycling performance is superior to LMFP made with manganese dioxide or manganese carbonate. Lastly, using iron-doped manganese tetraoxide as a raw material can improve the compaction performance of LMFP.