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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Constituent material influence on the electrochemical performance and supercapacitance of PAni/diamond/CF composite

Full text
Author(s):
da Silva, Lilian Mieko [1] ; de Lima Almeida, Dalva Alves [1] ; Oishi, Silvia Sizuka [1] ; Couto, Andrea Boldarini [1] ; Ferreira, Neidenei Gomes [1]
Total Authors: 5
Affiliation:
[1] Natl Inst Space Res INPE, Av Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS; v. 228, p. 249-260, FEB 2018.
Web of Science Citations: 5
Abstract

Ternary composites of polyaniline (PAni)/diamond/carbon fiber (CF) were produced and characterized, evaluating the influence of the constituent materials. Different CF heat treatment temperatures were used, 1000 and 2000 degrees C, producing structurally different CF. In addition, diamond films were grown on CF at two different morphologies, boron doped nanocrystalline (BDND) and microcrystalline (BDD) diamond films. A NaCl/HCl solution with distilled aniline was used for PAni chemical synthesis. FEG-SEM images showed that both PAni and diamond coatings covered and enwrapped the fibers. Raman spectra exhibited the differences in the samples structure. Among the studied ternary composites, electrochemical results indicated that the PAni/BDD/CF2000 composite has the highest capacitance response and charge storage capacity, the most reversible oxidation and reduction processes, and the lowest charge transfer resistance, presenting specific capacitance of 526.5 F/g. Moreover, this work confirmed that the structure and morphology of the constituent materials affected the electrochemical performance of the ternary composite. (AU)

FAPESP's process: 14/27164-6 - Production and characterization of reticulated vitreous carbon/nanodiamond/silver nanoparticles composites used for nitrate removal
Grantee:Silvia Sizuka Oishi
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/24396-0 - Carbon fiber/nanodiamond/polyaniline composites interconnected in water cleaning processes and/or energy convertion devices
Grantee:Lilian Mieko da Silva
Support Opportunities: Scholarships in Brazil - Doctorate