Multiscale electrochemistry of hydrogels embedding conductive nanotubes
Jean-Marc Noël1, Léopold Mottet2, Nicolas Bremond2
1Sorbonne Paris Cité , Paris Diderot University , Interfaces , Traitements , Organisation et Dynamique des Systèmes (ITODYS) , CNRS-UMR 7086 , 15 rue J. A. de Baif , 75013 Paris , France . Email: frederic.kanoufi@univ-paris-diderot.fr ; ; Tel: +33 157277217.
Chemical Science
|December 9, 2017
Summary
Scanning electrochemical microscopy (SECM) characterized alginate beads with carbon nanotubes (CNTs). SECM revealed CNT networks enabling soft 3D electrodes for efficient charge transfer and nanoscale analysis.
Area of Science:
- Electrochemistry
- Materials Science
- Biomaterials
Background:
- Biocompatible materials are crucial for advanced applications.
- Characterizing local electrochemical properties of complex materials is challenging.
- Alginate beads with carbon nanotubes (CNTs) offer potential as soft 3D electrodes.
Purpose of the Study:
- To characterize the local electrochemical functionalities of alginate/CNT beads.
- To investigate the conductivity, organization, and communication within CNT networks.
- To assess the suitability of these beads as soft 3D electrodes.
Main Methods:
- Utilized Scanning Electrochemical Microscopy (SECM) for local characterization.
- Employed SECM under conditions mimicking operating environments.
- Investigated charge evacuation and communication pathways within the alginate/CNT matrix.
Main Results:
- SECM successfully evidenced local conductivity and organization of CNTs within alginate beads.
- Demonstrated active CNT networks capable of long-range charge evacuation.
- Visualized communication within the CNT network and enabled nanoscale study of individual CNTs.
Conclusions:
- Alginate/CNT beads function as effective soft 3D electrodes due to their active CNT networks.
- SECM is a powerful tool for characterizing local electrochemical properties of biomaterials.
- The findings enable the development of advanced soft electrode materials for electrochemical applications.
