1. FeO0.7F1.3/C Nanocomposite as a High-Capacity Cathode Material for Sodium-Ion Batteries.
- Author
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Zhou, Yong‐Ning, Sina, Mahsa, Pereira, Nathalie, Yu, Xiqian, Amatucci, Glenn G., Yang, Xiao‐Qing, Cosandey, Frederic, and Nam, Kyung‐Wan
- Subjects
STORAGE battery electrodes ,SODIUM ions ,LITHIUM-ion batteries ,SINGLE walled carbon nanotubes ,ELECTRIC properties of nanocomposite materials ,X-ray absorption near edge structure - Abstract
Searching high capacity cathode materials is one of the most important fields of the research and development of sodium-ion batteries (SIBs). Here, we report a FeO
0.7 F1.3 /C nanocomposite synthesized via a solution process as a new cathode material for SIBs. This material exhibits a high initial discharge capacity of 496 mAh g−1 in a sodium cell at 50 °C. From the 3rd to 50th cycle, the capacity fading is only 0.14% per cycle (from 388 mAh g−1 at 3rd the cycle to 360 mAh g−1 at the 50th cycle), demonstrating superior cyclability. A high energy density of 650 Wh kg−1 is obtained at the material level. The reaction mechanism studies of FeO0.7 F1.3 /C with sodium show a hybridized mechanism of both intercalation and conversion reaction. [ABSTRACT FROM AUTHOR]- Published
- 2015
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