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- Title
Halide-Ion-Assisted Synthesis of Different α-Fe<sub>2</sub>O<sub>3</sub> Hollow Structures and Their Lithium-Ion Storage Properties.
- Authors
Ma, Ruguang; Wang, Man; Dam, Duc Tai; Dong, Yucheng; Chen, Yu; Moon, Seung Ki; Yoon, Yong‐Jin; Lee, Jong‐Min
- Abstract
Various α-Fe2O3 hollow structures, such as wormlike shapes, ellipsoids, and quasicubes, were synthesized successfully by a halide-ion-assisted solvothermal method. The self-assembly assisted by selective absorption of halide ions and Ostwald ripening speeded up by acidic etching commonly determine the final unique structures. The electrochemical performance of the α-Fe2O3 with different structures in reversible lithium-ion storage was investigated, and showed that the hollow Fe2O3 quasicubes exhibit the best cycling performance with a charge capacity of 401.6 mAh g−1 after 100 cycles at 0.2 C. The superior cycling stability and high specific capacity can be ascribed to the higher specific surface area, lower charge-transfer resistance, and adequate alleviation of volume variation.
- Subjects
HALIDES; FERRIC oxide; LITHIUM-ion batteries; ELLIPSOIDS; MOLECULAR self-assembly; OSTWALD ripening
- Publication
ChemPlusChem, 2015, Vol 80, Issue 3, p522
- ISSN
2192-6506
- Publication type
Article
- DOI
10.1002/cplu.201402236