Influence of the PAni morphology deposited on the carbon fiber: An analysis of the capacitive behavior of this hybrid composite

Author(s)

Fonseca, Carla Polo ^[1] ; Almeida, Dalva A. L. ^[1] ; Baldan, Mauricio R. ^[1] ; Ferreira, Neidenei G. ^[1]

Affiliation

^[1] INPE, Lab Associado Sensores & Mat, BR-12245970 Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: Chemical Physics Letters; v. 511, n. 1-3, p. 73-76, JUL 26 2011.
• Web of Science Citations: 7

Abstract

CF/PAni composites were synthesized using the polymerization chemistry. Three different deposition times were used in the synthesis, such as: 30, 60 and 90 min. The morphology and the structure of composites were analyzed by SEM and Raman spectroscopy, respectively. The influence of the mass of polymer deposited on the carbon fiber, with respect to the values of specific capacitance (C(sp)) was analyzed by electrochemical experiments. The optimum value of the C(sp) was obtained for CF/PAni-30 min (C(sp) = 188 Fg (1)). This fact is related to the lower charge transfer resistance, due to its more homogeneous morphology and thin layer polyaniline. (C) 2011 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 09/17584-0 - Carbon nanotubes, carbon fibers, and Polyaniline composites as electrode in Supply and Conversion Energy Devices
• Grantee: Dalva Alves de Lima Almeida
• Support Opportunities: Scholarships in Brazil - Doctorate