Layer-by-layer assembly of iron oxide-decorated few-layer graphene/PANI:PSS composite films for high performance supercapacitors operating in neutral aqueous electrolytes
- Fenoy, Gonzalo Eduardo
- Van der Schueren, Benoit
- Scotto, Juliana
- Boulmedais, Fouzia
- Ceolin, Marcelo Raul
- Bégin Colin, Sylvie
- Bégin, Dominique
- Marmisollé, Waldemar Alejandro
- Azzaroni, Omar
DOIAbstract
The layer-by-layer assembly of polyaniline-PSS (PANI:PSS) complexes and iron oxide nanoparticles-decorated few-layer graphene (Fe-FLG) from aqueous dispersions, yielding an electrode material with excellent electrochemical capacitive performance in simple neutral aqueous electrolyte is presented. The simple dip-coating procedure allows the effective incorporation of both materials and the control of the film nanoarchitectonics. The resulting composite coating was characterized by XPS and Raman spectroscopies. A linear dependence of the capacitance on the film mass indicates that both building blocks are efficiently (and electrochemically) connected within the films. The electrochemical performance of the film-coated electrodes was tested in...
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