Journal
JOURNAL OF POWER SOURCES
Volume 119, Issue -, Pages 285-289Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-7753(03)00152-6
Keywords
nano-crystalline; orthorhombic LiFeO2; cycleability; LiFe5O9; phase change
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Nano-crystalline LiFeO2 has been synthesized at low temperature (150 degreesC) using the solid-state method. It was composed of orthorhombic LiFeO2 and a small amount of spinel LiFe5O8 phases. A Li/LiFeO2 cell showed not only a fairly high initial discharge capacity of over 150 mAh/g, but also a good cycle retention rate at room temperature. We first found that the orthorhombic LiFeO2 underwent a structural change to the spinel phase (LiFe5O8) during the charge/discharge process, which resulted in the capacity decline of the Li/LiFeO2 system. (C) 2003 Elsevier Science B.V. All rights reserved.
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