Next Article in Journal / Special Issue
Development and Characterization of Biomimetic Carbonated Calcium-Deficient Hydroxyapatite Deposited on Carbon Fiber Scaffold
Previous Article in Journal / Special Issue
Development of Electrode Materials of Lithium-Ion Battery Utilizing Nanospaces
Article Menu
Issue 2 (June) cover image

Export Article

Open AccessArticle

Supercapacitor Electrode Based on Activated Carbon Wool Felt

Área Fisicoquímica, DETEMA, Facultad de Química, Universidad de la República, Montevideo 11200, Uruguay
Instituto Nacional de Pesquisas Espaciais—INPE, São José dos Campos 12227-010, Brazil
Instituto Tecnológico de Aeronáutica—ITA, São José dos Campos 12228-900, Brazil
Author to whom correspondence should be addressed.
Received: 1 March 2018 / Revised: 9 April 2018 / Accepted: 11 April 2018 / Published: 16 April 2018
Full-Text   |   PDF [9974 KB, uploaded 3 May 2018]   |  


An electrical double-layer capacitor (EDLC) is based on the physical adsorption/desorption of electrolyte ions onto the surface of electrodes. Due to its high surface area and other properties, such as electrochemical stability and high electrical conductivity, carbon materials are the most widely used materials for EDLC electrodes. In this work, we study an activated carbon felt obtained from sheep wool felt (ACF’f) as a supercapacitor electrode. The ACF’f was characterized by elemental analysis, scanning electron microscopy (SEM), textural analysis, and X-ray photoelectron spectroscopy (XPS). The electrochemical behaviour of the ACF’f was tested in a two-electrode Swagelok®-type, using acidic and basic aqueous electrolytes. At low current densities, the maximum specific capacitance determined from the charge-discharge curves were 163 F·g−1 and 152 F·g−1, in acidic and basic electrolytes, respectively. The capacitance retention at higher current densities was better in acidic electrolyte while, for both electrolytes, the voltammogram of the sample presents a typical capacitive behaviour, being in accordance with the electrochemical results. View Full-Text
Keywords: activated carbon fibres; wool; supercapacitor electrode activated carbon fibres; wool; supercapacitor electrode

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Pina, A.C.; Amaya, A.; Marcuzzo, J.S.; Rodrigues, A.C.; Baldan, M.R.; Tancredi, N.; Cuña, A. Supercapacitor Electrode Based on Activated Carbon Wool Felt. C 2018, 4, 24.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
C EISSN 2311-5629 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top