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Sol-gel synthesis and electrical characterization of doped-carbon decorated mixed conductor ceramics
- Publication Year :
- 2019
- Publisher :
- Elsevier Science, 2019.
-
Abstract
- New mixed composite conductors of compositions: Li3V2−x [Cu]x (PO4)3/C and Li3V2−x [Nb]x(PO4)3/C (x = 0.1; 0.2 and 0.3) have been synthesized by the sol-gel method using Citric and Oxalic acids as a primary carbon source and Carbon Black or Carbon Nano-Fibers as secondary carbon sources. The combination of these carbon forms with the Nb doped-polyanion material boosts their electrical behavior up to 10−3 S.m−1 that is two orders of magnitude higher than the Li3V2(PO4)3/C at a room temperature. SEM, TEM and Micro-Raman Spectroscopy evidence that Carbon Nano-Fiber blend is better conductor than Carbon Black blend, which is also revealed by complex conductivity spectra. The conductivity behavior of Nb-doped ceramic is better than the Cudoped one. The obtained niobium composites have a much more stable structure compared to the copper ones because the niobium atoms fit well in the vanadium position, whereas copper atoms are expelled from the structured. Fil: Terny, Cintia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina Fil: Vega Castillo, Jesus Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: de la Rubia, María Ángeles. Centro de Materiales y Dispositivos Avanzados para TIC. Grupo de Propiedades Ópticas, Eléctricas y Magnéticas de Materiales y sus Aplicaciones.; España Fil: de Frutos, José. Centro de Materiales y Dispositivos Avanzados para TIC. Grupo de Propiedades Ópticas, Eléctricas y Magnéticas de Materiales y sus Aplicaciones.; España Fil: Frechero, Marisa Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
- Subjects :
- Materials science
Físico-Química, Ciencia de los Polímeros, Electroquímica
Niobium
chemistry.chemical_element
Vanadium
02 engineering and technology
Conductivity
010402 general chemistry
01 natural sciences
General Materials Science
Ceramic
Electrical conductor
Mechanical Engineering
Ciencias Químicas
MIXED CONDUCTOR CERAMIC
IMPEDANCE SPECTROSCOPY
Carbon black
021001 nanoscience & nanotechnology
Condensed Matter Physics
Copper
0104 chemical sciences
chemistry
Chemical engineering
Mechanics of Materials
visual_art
visual_art.visual_art_medium
SOL-GEL METHOD
0210 nano-technology
Carbon
CIENCIAS NATURALES Y EXACTAS
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....e4c7e591110a8d60b49587d2e1a8b3a9