Thermoelectric Properties of Conducting Polymers
Abstract
Development of an inexpensive thermoelectric material which has a better cooling capacity than any currently available would have many practical advantages. On board ships or submarines it would allow a quiet, decentralized cooling architecture, it would reduce usage of chlorofluorocarbons, and would provide less expensive and lighter weight cooling systems. To this end a number of organic materials have been obtained and tested for thermoelectric properties. These include conductive vinyl elastomer, conductive nylon 12, and conductive polyphenylene sulfide, all of which are made conductive by addition of carbon. Polymers made conductive in this way do not have a high Seebeck coefficient. other polymers tested include polyaniline, a Schiff's base polymer (poly-N,N'(1,3-phenylenedimethylidyne)bis(3-ethynylaniline)), TTF-TCNQ (tetrathiafulvalinium tetracyanoquinodimethanide) , D sub S(TCNQ)2 (1,2-bis(4-N- methylpyridylium-TCNQ)ethane), and polyoctylthiophene (POT) doped (separately) with 33% of the following substances: iodine, tetraethylamineammonium tetrafluoroborate, potassium persulfate, and ferric chloride. Ferric chloride doped POT was found to have a high Seebeck coefficient (1800 gV/deg C), but the conductivity (0.0074 S/cm) is not high enough to provide a good figure of merit. Polyaniline, Conducting polymer, Conductive vinyl, Conductive nylon, Conductive polyphenylene sulfide, Polyoctylthiophene, Schiff's base, Thermoelectric
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1994
- Accession Number
- ADA284058
Entities
People
- Barbara Howell
Organizations
- Naval Surface Warfare Center Carderock Division