Effect of Oxidant/Monomer ratio on the electrical properties of polypyrrole in tantalum capacitors

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Goncalves, G (Author) Other; Fortunato, E (Author) Other; José Inácio Martins (Author) FEUP; Martins, R (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: ADVANCED MATERIALS FORUM III, PTS 1 AND 2

Vol. 34

Pages: 43-47

Indexing

ISI Web of Knowledge - 5 Citations

ISI Web of Science

Scopus - 2 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-NT9

Abstract (EN): In this work, the relation between oxidant/monomer ratio and the electrical conductivity of polypyrrole was studied using different ratios. We achieved a maximum value for electrical conductivity of 7.5 S/cm for a ratio of 2:1. We also developed a chemical dip-coating process to produce the cathode layer in tantalum capacitors. We obtained capacitances of about 80 mu F after 8 cycles using the sequence Monomer/Oxidant.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5