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Synthesis of nano-crystalline LiFeO2 material with advanced battery performance by Yun Sung Lee; Chong Seung Yoon; Yang Kook Sun; Koichi Kobayakawa; Yuichi Sato is a Engineering article available to read on EtoBox.

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LiFeO 2 has been synthesized at low temperature (150 °C) using the solid-state method. It was composed of orthorhombic LiFeO 2 and small amount of spinel LiFe 5 O 8 phases. A Li=LiFeO 2 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. During the cycling test, the Li=LiFeO 2 cell exhibited a unique abrupt capacity drop near the 13th cycle and continuously showed an excellent cycling performance of over 99% for 25 cycles. We found that the orthorhombic LiFeO 2 underwent a structural change to the spinel phase during the charge/discharge process which resulted in the capacity decline during the long-term cycling.

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Author

Yun Sung Lee; Chong Seung Yoon; Yang Kook Sun; Koichi Kobayakawa; Yuichi Sato

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1388-2481)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)