Journal
ELECTROCHEMISTRY
Volume 83, Issue 10, Pages 885-888Publisher
ELECTROCHEMICAL SOC JAPAN
DOI: 10.5796/electrochemistry.83.885
Keywords
LiFeOF; Lithium-ion Batteries; Dry Ball-milling Method
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Funding
- Research & Development Initiative for Scientific Innovation of New Generation Batteries (RISING project) of the New Energy and Industrial Technology Development Organization (NEDO), Japan
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Iron-based conversion cathode, FeOF is attractive, because of the low cost and the large specific capacity. However, the synthesis is not easy and it cannot be used as cathode against carbonaceous anode. To overcome these drawbacks, we focused on the LiFeOF phase, which has the same chemical composition as the discharged intermediate product of FeOF cathode. LiFeOF can be easily synthesized from LiF and FeO by the dry ball-milling method at room temperature. The reversible capacity was 292 mAh g(-1) with an average voltage of 2.5V and an energy density over 700 Wh kg(-1), which is higher than that of LiFePO4. In addition, we confirmed the feasibility of LiFeOF cathode against Li4Ti5O12 anode. (C) The Electrochemical Society of Japan, All rights reserved.
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