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Title: Fe{sub 2}O{sub 3} nanowires on HOPG as precursor of new carbon-based anode for high-capacity lithium ion batteries

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.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Dipartimento di Fisica, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma (Italy)
  2. Department of Fundamental and Applied Sciences for Engineering, Universita di Roma La Sapienza, Via A. Scarpa 14/16, I - 00161 Roma (Italy)
  3. Dipartimento di Chimica, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma (Italy)
  4. Dipartimento di Fisica, CNISM, CNIS, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma (Italy)
Publication Date:
OSTI Identifier:
22311370
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1603; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANODES; CHARGE EXCHANGE; GRAPHENE; GRAPHITE; IRON IONS; IRON OXIDES; PHOTOEMISSION; QUANTUM WIRES; SUBSTRATES; SURFACE AREA