Send to

Choose Destination
ACS Appl Mater Interfaces. 2017 Feb 22;9(7):6306-6313. doi: 10.1021/acsami.6b15327. Epub 2017 Feb 9.

High Thermoelectric Power Factor Organic Thin Films through Combination of Nanotube Multilayer Assembly and Electrochemical Polymerization.

Author information

Molecular Science Institute, University of Valencia , PO Box 22085, 46071 Valencia, Spain.
Materials Science Institute, University of Valencia , Dr. Moliner 50, 46100 Burjasot, Spain.


In an effort to produce effective thermoelectric nanocomposites with multiwalled carbon nanotubes (MWCNT), layer-by-layer assembly was combined with electrochemical polymerization to create synergy that would produce a high power factor. Nanolayers of MWCNT stabilized with poly(diallyldimethylammonium chloride) or sodium deoxycholate were alternately deposited from water. Poly(3,4-ethylene dioxythiophene) [PEDOT] was then synthesized electrochemically by using this MWCNT-based multilayer thin film as the working electrode. Microscopic images show a homogeneous distribution of PEDOT around the MWCNT. The electrical resistance, conductivity (σ) and Seebeck coefficient (S) were measured before and after the PEDOT polymerization. A 30 bilayer MWCNT film (<1 μm thick) infused with PEDOT is shown to achieve a power factor (PF = S2σ) of 155 μW/m K2, which is the highest value ever reported for a completely organic MWCNT-based material and competitive with lead telluride at room temperature. The ability of this MWCNT-PEDOT film to generate power was demonstrated with a cylindrical thermoelectric generator that produced 5.5 μW with a 30 K temperature differential. This unique nanocomposite, prepared from water with relatively inexpensive ingredients, should open up new opportunities to recycle waste heat in portable/wearable electronics and other applications where low weight and mechanical flexibility are needed.


carbon nanotubes; electrochemical polymerization; layer-by-layer assembly; polymer nanocomposites; power factor; thermoelectric


Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center