Facile synthesis of carbon layer-entangled Fe2O3 clusters as anode materials for improved Li-ion batteries
- Authors
- Oh, Hang-Deok; Lee, Sang-Wha; Kim, Sang-Ok; Lee, Joong Kee
- Issue Date
- 15-Dec-2013
- Publisher
- ELSEVIER
- Keywords
- Li-ion batteries; Anode materials; Diamine; Iron oxides; Carbon layer
- Citation
- JOURNAL OF POWER SOURCES, v.244, pp.575 - 580
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 244
- Start Page
- 575
- End Page
- 580
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/14055
- DOI
- 10.1016/j.jpowsour.2013.01.120
- ISSN
- 0378-7753
- Abstract
- Carbon layer-entangled iron oxides (Fe2O3@carbon) are facilely prepared through the cross-linking assembly of iron oxides induced by the addition of 1,12-diaminododecane (C-12 diamines). The calcined Fe2O3@carbon composites exhibit the XRD patterns attributed to hexagonal phase of hematite (alpha-Fe2O3) with negligible magnetism. As anode electrode materials for Li-ion batteries, the Fe2O3@carbon exhibits the retained capacity of 614 mAh g(-1) at 0.1 C after 35 cycles, while the carbon free Fe2O3 exhibits the retained capacity of 283 mAh g(-1) at 0.1 C after 35 cycles. The unique formation of carbon layer entanglement within iron oxide clusters contributes the improved capacity retention capability of the composite electrode (Fe2O3@carbon) by providing buffering space for large volume expansion and enhanced electrical conductivity between the active iron oxides. (C) 2013 Elsevier B.V. All rights reserved.
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