Preparation and characterization of LiNi{sub 0.8}Co{sub 0.2}O{sub 2}/PANI microcomposite electrode materials under assisted ultrasonic irradiation

Journal Article · Sun Jan 15 04:00:00 EST 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.09.030· OSTI ID:20784863

Mosqueda, Y ^[1]; Perez-Cappe, E ^[1]; Arana, J ^[2]; Longo, E ^[2]; Ries, A ^[2]; Cilense, M ^[2]; Nascente, P A.P. ^[3]; Aranda, P ^[4]; Ruiz-Hitzky, E ^[4]

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1. Laboratory of Chemistry of Materials-IMRE, Havana University, Havana (Cuba)
2. Chemistry Department, UNESP, Ararquara (Brazil)
3. CCDM-Universidade de Sao Carlos (Brazil)
4. Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco E-28049, Madrid (Spain)

A preparation method for a new electrode material based on the LiNi{sub 0.8}Co{sub 0.2}O{sub 2}/polyaniline (PANI) composite is reported. This material is prepared by in situ polymerization of aniline in the presence of LiNi{sub 0.8}Co{sub 0.2}O{sub 2} assisted by ultrasonic irradiation. The materials are characterized by XRD, TG-DTA, FTIR, XPS, SEM-EDX, AFM, nitrogen adsorption (BET surface area) and electrical conductivity measurements. PANI in the emeraldine salt form interacts with metal-oxide particles to assure good connectivity. The dc electrical conductivity measurements at room temperature indicate that conductivity values are one order of magnitude higher in the composite than in the oxide alone. This behavior determines better reversibility for Li-insertion in charge-discharge cycles compared to the pristine mixed oxide when used as electrode of lithium batteries. -- Graphical abstract: PANI/LiNi{sub 0.8}Co{sub 0.2}O{sub 2} microcomposites prepared under ultrasound irradiation are formed by oxide particles in contact with the conducting polymer procuring connectivity that enhances electrical and electrochemical properties of the resulting materials.

• OSTI ID: 20784863
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 179; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
COBALT COMPOUNDS
DIFFERENTIAL THERMAL ANALYSIS
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
FOURIER TRANSFORMATION
INFRARED SPECTRA
IRRADIATION
LITHIUM COMPOUNDS
NICKEL COMPOUNDS
OXIDES
POLYMERIZATION
SCANNING ELECTRON MICROSCOPY
ULTRASONIC WAVES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY