Fe{sub 2}O{sub 3} nanowires on HOPG as precursor of new carbon-based anode for high-capacity lithium ion batteries
- Dipartimento di Fisica, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma (Italy)
- Department of Fundamental and Applied Sciences for Engineering, Universita di Roma La Sapienza, Via A. Scarpa 14/16, I - 00161 Roma (Italy)
- Dipartimento di Chimica, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma (Italy)
- Dipartimento di Fisica, CNISM, CNIS, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma (Italy)
Iron Oxides nanostructures are very promising systems for new generation of anode material for Lithium-Ion batteries because of their high capacity associated to their surface area. A core-level photoemission study of Fe{sub 2}O{sub 3} nanowires deposited on highly-oriented pyrolitic graphite (HOPG) under Li exposure is presented. The Fe-2p, Fe-3p, and Li-1s core-level lineshape evolution upon Li exposure in ultra-high-vacuum conditions clearly brings to light the Fe ion reduction from fully trivalent to prevalently divalent at saturation. Furthermore, the graphite substrate allows allocation of a large amount of Li ions surrounding the iron-oxide nanowires, opening a new scenario towards the use of graphene for improving the ionic charge exchange.
- OSTI ID:
- 22311370
- Journal Information:
- AIP Conference Proceedings, Vol. 1603, Issue 1; Conference: Nanoforum 2013, Rome (Italy), 18-20 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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