title: A study of nanosize Fe3O4 deposited on carbon matrix.
abstract: Nanosized crystalline Fe3O4 (with an average particle size of 16 nm) was successfully synthesized on a carbon matrix surface. The prepared sample was heat-treated in the temperature range 300 degrees C - 750 degrees C to remove residual impurities and to obtain a final product with a 77:23 ratio between magnetite and the carbon support. The sample was subjected to physicochemical and electrochemical tests. The purity of the phase and the particles size was determined by X-ray diffraction analysis and confirmed by field emission scanning electron micrographs. The specific surface area of the sample measured by the B.E.T method was 120 m2 g(-1). A series of electrochemical tests including EIS, CV and long-term constant current cycling have been performed. The obtained reversible capacity within 15 cycles was in the range 400-550 mA h x g(-1). The electrochemical behavior of the test sample and its possible practical use as an anode material in lithium secondary batteries are discussed.
authors.affiliation: Institute of Electrochemistry and Energy Systems, BAS.
authors.forename: B
authors.initials: B
authors.lastname: Banov
authors.forename: L
authors.initials: L
authors.lastname: Ljutzkanov
authors.forename: I
authors.initials: I
authors.lastname: Dimitrov
authors.forename: A
authors.initials: A
authors.lastname: Trifonova
authors.forename: H
authors.initials: H
authors.lastname: Vasilchina
authors.forename: A
authors.initials: A
authors.lastname: Aleksandrova
authors.forename: A
authors.initials: A
authors.lastname: Mochilov
authors.forename: Bui Thi
authors.initials: BT
authors.lastname: Hang
authors.forename: Shigeto
authors.initials: S
authors.lastname: Okada
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Yamaki