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Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

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Published on: January 8, 2016

High power organic cathodes using thin films of electropolymerized benzidine polymers.

Thanh-Tam Truong¹, Geoffrey W Coates, Héctor D Abruña

¹Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, USA. coates@cornell.edu hda1@cornell.edu.

Chemical Communications (Cambridge, England)

|August 21, 2015

Summary

Researchers developed benzidine polymer thin films for energy storage. These films show high discharge capacities and fast charge/discharge rates, making them promising for advanced battery applications.

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Area of Science:

Electrochemistry
Materials Science
Polymer Chemistry

Background:

Benzidine polymers are conductive polymers with potential applications in energy storage.
Electrochemical deposition is a common method for creating thin films of conductive polymers.
Optimizing polymer properties is crucial for enhancing device performance.

Purpose of the Study:

To electrochemically deposit thin films of benzidine polymers.
To optimize the electropolymerization and electrochemical properties of these polymers by varying the alkyl linker.
To evaluate the energy storage capabilities of the resulting polymer films.

Main Methods:

Oxidative coupling of di- and trianilinoalkane monomers for electropolymerization.
Electrochemical deposition of polymer films onto conductive substrates.

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Varying the alkyl linker length to tune polymer properties.

Electrochemical characterization including cyclic voltammetry and galvanostatic cycling.

Main Results:

Successful electrochemical deposition of benzidine polymer thin films.
Optimized polymer films exhibited two reversible one-electron transfers at high potentials (>3.3 V vs. Li/Li(+)).
Maintained high discharge capacities exceeding 150 mA h g(-1) even at rapid discharge rates (under 4 seconds).

Conclusions:

Benzidine polymer thin films can be effectively synthesized via electrochemical methods.
The choice of alkyl linker significantly influences the electropolymerization and electrochemical performance.
These polymers demonstrate excellent potential for high-power energy storage applications due to their high capacity and fast charge/discharge capabilities.