期刊
ELECTROCHEMICAL AND SOLID STATE LETTERS
卷 10, 期 5, 页码 A134-A138出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.2710960
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Olivine compounds have emerged as important and enabling positive electrode materials for high-power, safe, long-life lithium rechargeable batteries. In this work, the miscibility gap in undoped Li1-xFePO4 is shown to contract systematically with decreasing particle size in the nanoscale regime and with increasing temperature at a constant particle size. These effects suggest that the miscibility gap completely disappears below a critical size. In the size-dependent regime, the kinetic response of nanoscale olivines should deviate from the simple size-scaling implicit in Fickian diffusion. (c) 2007 The Electrochemical Society.
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