Facile synthesis of carbon layer-entangled Fe2O3 clusters as anode materials for improved Li-ion batteries
- Facile synthesis of carbon layer-entangled Fe2O3 clusters as anode materials for improved Li-ion batteries
- Hang-Deok Oh; Sang-Wha Lee; 김상옥; 이중기
- Li-ion batteries; Anode materials; Diamine; Iron oxides; Carbon layer
- Issue Date
- Journal of power sources
- VOL 244, 575-580
- 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 (α-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.
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