Open AccessEco-Efficient Synthesis of LiFePO[sub 4] with Different Morphologies for Li-Ion Batteries
Author(s) -
Nadir Recham,
Michel Armand,
Lydia Laffont-Dantras,
JeanMarie Tarascon
Publication year - 2009
Publication title -
electrochemical and solid-state letters
Language(s) - English
Resource type - Journals
eISSN - 1944-8775
pISSN - 1099-0062
DOI - 10.1149/1.3039090
Subject(s) - electrochemistry , materials science , valence (chemistry) , battery (electricity) , electrode , ion , nanotechnology , base (topology) , chemical engineering , chemistry , organic chemistry , thermodynamics , mathematical analysis , power (physics) , physics , mathematics , engineering
LiFeP O4 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 LiFeP O4 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. © 2008 The Electrochemical Society