Flocculant-assisted synthesis of Fe{sub 2}O{sub 3}/carbon composites for superior lithium rechargeable batteries
- School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046 (China)
- Electronic Materials Research Laboratory, Xi'an Jiaotong University, Xi'an 710049 (China)
- School of Chemical and Biological Engineering, and Research Center for Energy Conversion and Storage, Seoul National University, Seoul 151-742 (Korea, Republic of)
Highlights: Black-Right-Pointing-Pointer A facile flocculant-assisted fabrication of Fe{sub 2}O{sub 3}/C composite. Black-Right-Pointing-Pointer Carboxymethylcellulose acts simultaneously as the flocculant and carbon source. Black-Right-Pointing-Pointer A high capacity of 497 mA h g{sup -1} at 1000 mA g{sup -1} over 100 cycles is retained. Black-Right-Pointing-Pointer Fe{sub 2}O{sub 3}/C anode exhibits excellent rate capability and cyclability. -- Abstract: High-performance iron oxide/carbon (Fe{sub 2}O{sub 3}/C) composites for lithium-ion batteries are synthesized by the combination of flocculant-assisted process and thermo-chemical treatment. Carboxymethylcellulose is used simultaneously as the flocculant and carbon source. This facile and scalable method lends itself to the fabrication of other metal oxide/carbon composites based on the flocculation mechanism. The lithium storage mechanism and cycling performance of Fe{sub 2}O{sub 3}/C composites are investigated by cyclic voltammetry and charge-discharge tests. As the rates increase from 50 to 1000 mA g{sup -1}, the composites display high charge capacities of 834 mAh g{sup -1} for the first cycle at 50 mA g{sup -1} and 497 mAh g{sup -1} at 1000 mA g{sup -1} over 100 cycles. Excellent rate capability and cyclability are ascribed presumablely to the isolation and buffer functions of the conductive carbon matrix against particle aggregation and large volume variety upon cycling.
- OSTI ID:
- 22212397
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 1 Vol. 47; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Facile synthesis and electrochemical characterization of Sn{sub 4}Ni{sub 3}/C nanocomposites as anode materials for lithium ion batteries
One step synthesis of monoclinic VO{sub 2} (B) bundles of nanorods: Cathode for Li ion battery