Get access
Advertisement

Electrochemistry of Carbon Nanotubes: Reactive Processes, Dual Sensing–Actuating Properties and Devices

Authors

  • José G. Martínez,

    1. Center for Electrochemistry and Intelligent Materials, ETSII, Universidad Politécnica de Cartagena, Aulario II, C/Carlos III, s/n, 30203, Cartagena (Spain), Fax: (+34) 968 32 59 15
    Search for more papers by this author
  • Dr. Takushi Sugino,

    1. Artificial Cell Research Group, Cell Research Institute, National Institute of Science and Technology (AIST), Midorigaoka 1-8-31, Ikeda, Osaka 563-8577 (Japan)
    Search for more papers by this author
  • Dr. Kinji Asaka,

    1. Artificial Cell Research Group, Cell Research Institute, National Institute of Science and Technology (AIST), Midorigaoka 1-8-31, Ikeda, Osaka 563-8577 (Japan)
    Search for more papers by this author
  • Prof. Dr. Toribio F. Otero

    Corresponding author
    1. Center for Electrochemistry and Intelligent Materials, ETSII, Universidad Politécnica de Cartagena, Aulario II, C/Carlos III, s/n, 30203, Cartagena (Spain), Fax: (+34) 968 32 59 15
    • Center for Electrochemistry and Intelligent Materials, ETSII, Universidad Politécnica de Cartagena, Aulario II, C/Carlos III, s/n, 30203, Cartagena (Spain), Fax: (+34) 968 32 59 15
    Search for more papers by this author

Abstract

Single-walled carbon nanotubes (SWCNT) embedded in a non-electroactive polymer are electrochemically characterized. The increasing voltammetric maximums obtained with rising temperature or electrolyte concentration point to a chemical nature of the processes. The chemical kinetic control of the processes is corroborated by its empirical chemical kinetics: the initial reaction rates are obtained from the chronoamperometric responses to potential steps. The activation energy of the reaction includes information about the structural state of the SWCNT before the potential step. Under constant current the potential evolution (chronopotentiometric response) and consumed electrical energy at any time change as a function of (are sensors of) the experimental temperature or the electrolyte concentration. The reactive material, or any device based on this material, senses these working variables, and shows dual and simultaneous actuating–sensing properties.

Get access to the full text of this article

Ancillary