期刊
ELECTROCHEMICAL AND SOLID STATE LETTERS
卷 12, 期 2, 页码 A39-A44出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3039090
关键词
electrochemical electrodes; iron compounds; lithium compounds; secondary cells
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.
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