Affordable Access

deepdyve-link
Publisher Website

Electrochemical performance of hierarchical porous carbon materials obtained from the infiltration of lignin into zeolite templates.

Authors
  • Ruiz-Rosas, R
  • Valero-Romero, M J
  • Salinas-Torres, D
  • Rodríguez-Mirasol, J
  • Cordero, T
  • Morallón, E
  • Cazorla-Amorós, D
Type
Published Article
Journal
ChemSusChem
Publisher
Wiley (John Wiley & Sons)
Publication Date
May 01, 2014
Volume
7
Issue
5
Pages
1458–1467
Identifiers
DOI: 10.1002/cssc.201301408
PMID: 24678067
Source
Medline
Keywords
License
Unknown

Abstract

Hierarchical porous carbon materials prepared by the direct carbonization of lignin/zeolite mixtures and the subsequent basic etching of the inorganic template have been electrochemically characterized in acidic media. These lignin-based templated carbons have interesting surface chemistry features, such as a variety of surface oxygen groups and also pyridone and pyridinic groups, which results in a high capacitance enhancement compared to petroleum-pitch-based carbons obtained by the same procedure. Furthermore, they are easily electro-oxidized in a sulfuric acid electrolyte under positive polarization to produce a large amount of surface oxygen groups that boosts the pseudocapacitance. The lignin-based templated carbons showed a specific capacitance as high as 250 F g(-1) at 50 mA g(-1) , with a capacitance retention of 50 % and volumetric capacitance of 75 F cm(-3) at current densities higher than 20 A g(-1) thanks to their suitable porous texture. These results indicate the potential use of inexpensive biomass byproducts, such as lignin, as carbon precursors in the production of hierarchical carbon materials for electrodes in electrochemical capacitors.

Report this publication

Statistics

Seen <100 times