Covalently functionalized single-walled carbon nanotubes and graphene composite electrodes for pseudocapacitor application

Pierre Le Barny; Bernard Servet; Stéphane Campidelli; Paolo Bondavalli; Christophe Galindo

doi:10.1117/12.2030011

24 September 2013 Covalently functionalized single-walled carbon nanotubes and graphene composite electrodes for pseudocapacitor application

Pierre Le Barny, Bernard Servet, Stéphane Campidelli, Paolo Bondavalli, Christophe Galindo

Author Affiliations +

Proceedings Volume 8814, Carbon Nanotubes, Graphene, and Associated Devices VI; 88140I (2013) https://doi.org/10.1117/12.2030011
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

The use of carbon-based materials in electrochemical double-layer supercapacitors (EDLC) is currently being the focus of much research. Even though activated carbon (AC) is the state of the art electrode material, AC suffers from some drawbacks including its limited electrical conductivity, the need for a binder to ensure the expected electrode cohesion and its limited accessibility of its pores to solvated ions of the electrolyte. Owing to their unique physical properties, carbon nanotubes (CNTs) or graphene could overcome these drawbacks. It has been demonstrated that high specific capacitance could be obtained when the carbon accessible surface area of the electrode was finely tailored by using graphene combined with other carbonaceous nanoparticles such as CNTs¹².In this work, to further increase the specific capacitance of the electrode, we have covalently grafted onto the surface of single-walled carbon nanotubes (SWCNTs), exfoliated graphite or graphene oxide (GO), anthraquinone (AQ) derivatives which are electrochemically active materials. The modified SWCNTs and graphene-like materials have been characterized by Raman spectroscopy, X-ray photoemission and cyclic voltammetry . Then suspensions based on mixtures of modified SWCNTs and modified graphene-like materials have been prepared and transformed into electrodes either by spray coating or by filtration. These electrodes have been characterized by SEM and by cyclic voltammetry in 0.1M H₂S0₄ electrolyte.

Citation Download Citation

Pierre Le Barny, Bernard Servet, Stéphane Campidelli, Paolo Bondavalli, and Christophe Galindo "Covalently functionalized single-walled carbon nanotubes and graphene composite electrodes for pseudocapacitor application", Proc. SPIE 8814, Carbon Nanotubes, Graphene, and Associated Devices VI, 88140I (24 September 2013); https://doi.org/10.1117/12.2030011

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available