Easy fabrication of superporous zeolite templated carbon electrodes by electrospraying on rigid and flexible substrates

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/63275
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Title: Easy fabrication of superporous zeolite templated carbon electrodes by electrospraying on rigid and flexible substrates
Authors: Rosas, Juana M. | Ruiz-Rosas, Ramiro | Berenguer Betrián, Raúl | Cazorla-Amorós, Diego | Morallon, Emilia | Nishihara, Hirotomo | Kyotani, Takashi | Rodríguez-Mirasol, José | Cordero, Tomás
Research Group/s: Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Superporous zeolite templated carbon | Nanoparticles | Electrospraying | Rigid and flexible substrates
Knowledge Area: Química Inorgánica | Química Física
Issue Date: 23-Feb-2016
Publisher: Royal Society of Chemistry
Citation: Journal of Materials Chemistry A. 2016, 4: 4610-4618. doi:10.1039/C6TA00241B
Abstract: Electrospraying of colloidal suspensions of superporous zeolite templated carbon (ZTC) nanoparticles in ethanol is herein proposed for the controlled deposition of continuous carbon coatings over different substrates, both rigid and flexible. By simple tuning of the concentration, feed rate, voltage and treatment time, different electrode thicknesses can be obtained avoiding the difficult manipulation of ZTC nanopowder formed by around 200 nm size particles. The addition of sulfonated tetrafluoropolyethylene (Nafion) in low amounts into the ZTC suspension improves the adhesion, increases the allowable surface loading and enhances the electrochemical performance of ZTC electrodes. ZTC/Nafion coatings from 0.1 to 1.5 mg cm−2 have been successfully arranged over graphite sheet and conductive carbon paper substrates. The obtained electrodes have been electrochemically characterized in 1 M H2SO4 electrolyte, demonstrating the unique and well-known pseudocapacitive features of ZTC, while showing capacitances as high as 700 mF cm−2 and outstanding rate performance thanks to the improved arrangement and connectivity of the ZTC nanoparticles. A supercapacitor using electrosprayed ZTC electrodes is constructed, showing specific capacitance higher than 60 F g−1, capacitance retention of 63% when the current density is raised from 2.5 to 80 A g−1, energy density of 6.6 W h kg−1 and maximum deliverable power greater than 240 kW kg−1. These are promising results that make feasible the use of electrospraying for processing nanostructured carbon materials into electrodes of tunable thickness and deposited on substrates of different compositions and morphologies.
Sponsor: The authors thank the Spanish Government (MINECO) and FEDER (projects CTQ2012-36408, CTQ2012-31762, MAT2013-42007-P, IJCI-2014-20012 and JCI-2012-12664) for financial support. This work is also supported by the Nano–Macro Materials, Devices and System Research Alliance and by the Network Joint Research Center for Materials and Devices.
URI: http://hdl.handle.net/10045/63275
ISSN: 2050-7488 (Print) | 2050-7496 (Online)
DOI: 10.1039/C6TA00241B
Language: eng
Type: info:eu-repo/semantics/article
Rights: © The Royal Society of Chemistry
Peer Review: si
Publisher version: http://dx.doi.org/10.1039/C6TA00241B
Appears in Collections:INV - MCMA - Artículos de Revistas
INV - GEPE - Artículos de Revistas

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