화학공학소재연구정보센터
Electrochemical and Solid State Letters, Vol.12, No.2, A39-A44, 2009
Eco-Efficient Synthesis of LiFePO4 with Different Morphologies for Li-Ion Batteries
LiFePO4 is presently the most studied electrode material for battery applications. It can be prepared via solution, although it requires well-controlled pH conditions to master the iron valence state in the newly created material. Here we report its synthesis via the use of "latent bases" capable of releasing a nitrogen base upon heating. This way of controlling the reaction pH enables, in the absence of excess Li, the preparation of Fe+3-free LiFePO4 powders having various morphologies and showing good electrochemical performance. This approach is shown to offer great opportunities for the low-temperature synthesis of various electrode materials.