Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems
Novel applications of bioelectrochemical systems (BES) are emerging constantly, but the majority still lacks economic viability. Especially the use of electrochemical system components without adaptation to BES requirements causes poor exploitation of the potential system performance. The electrode...
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doaj-3a60039fcf81476a8919a9f6d1e788ac2020-11-25T02:03:49ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2019-09-01710.3389/fenrg.2019.00100480765Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical SystemsLiesa Pötschke0Philipp Huber1Sascha Schriever2Valentina Rizzotto3Thomas Gries4Lars M. Blank5Miriam A. Rosenbaum6Miriam A. Rosenbaum7Institute of Applied Microbiology, Aachen Biology and Biotechnology, RWTH Aachen University, Aachen, GermanyInstitut für Textiltechnik, RWTH Aachen University, Aachen, GermanyInstitut für Textiltechnik, RWTH Aachen University, Aachen, GermanyInstitute of Inorganic Chemistry, RWTH Aachen University, Aachen, GermanyInstitut für Textiltechnik, RWTH Aachen University, Aachen, GermanyInstitute of Applied Microbiology, Aachen Biology and Biotechnology, RWTH Aachen University, Aachen, GermanyBio Pilot Plant, Leibniz Institute for Natural Product Research and Infection Biology, Hans-Knöll-Institut, Jena, GermanyFaculty of Biological Sciences, Friedrich-Schiller-University, Jena, GermanyNovel applications of bioelectrochemical systems (BES) are emerging constantly, but the majority still lacks economic viability. Especially the use of electrochemical system components without adaptation to BES requirements causes poor exploitation of the potential system performance. The electrode material is one central component that determines BES performance. While commercial carbon fiber (CF) fabrics are commonly used, their customizability as two- or three-dimensional electrode material for BES is rarely investigated. Using pure cultures of S. oneidensis MR-1, we identified CF properties impacting bacterial current generation: (1) The removal of the sizing (protective coating) is of great importance for all the fibers studied, as it acts as an electrical insulator. By desizing, the maximum current density (jmax) is increased by up to 40-fold. (2) Alteration of the filament surface chemistry results in an accelerated initial development of current generation, but the maximum current density (jmax) is hardly affected. (3) A specific yarn structure, the stretch-broken yarn, supports exceptionally high current densities. The good electrode performance is correlated to the presence of free filament ends (responsible for 41% current increase), which are characteristic for this yarn. (4) Moreover, a combination of these free filament ends with a high degree of graphitization enhances electrode performance of a commercial fabric by 100%. The results demonstrate that the CF selection can greatly influence the achievable electrode performance of CF fabrics, and thereby contributes to rational engineering of CF based electrodes that can be tailored for the many BES applications envisaged.https://www.frontiersin.org/article/10.3389/fenrg.2019.00100/fullcarbon fiber electrodecarbon fabricS. oneidensis MR-1microbial fuel cellschemical surface activationdesizing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Liesa Pötschke Philipp Huber Sascha Schriever Valentina Rizzotto Thomas Gries Lars M. Blank Miriam A. Rosenbaum Miriam A. Rosenbaum |
spellingShingle |
Liesa Pötschke Philipp Huber Sascha Schriever Valentina Rizzotto Thomas Gries Lars M. Blank Miriam A. Rosenbaum Miriam A. Rosenbaum Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems Frontiers in Energy Research carbon fiber electrode carbon fabric S. oneidensis MR-1 microbial fuel cells chemical surface activation desizing |
author_facet |
Liesa Pötschke Philipp Huber Sascha Schriever Valentina Rizzotto Thomas Gries Lars M. Blank Miriam A. Rosenbaum Miriam A. Rosenbaum |
author_sort |
Liesa Pötschke |
title |
Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems |
title_short |
Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems |
title_full |
Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems |
title_fullStr |
Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems |
title_full_unstemmed |
Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems |
title_sort |
rational selection of carbon fiber properties for high-performance textile electrodes in bioelectrochemical systems |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Energy Research |
issn |
2296-598X |
publishDate |
2019-09-01 |
description |
Novel applications of bioelectrochemical systems (BES) are emerging constantly, but the majority still lacks economic viability. Especially the use of electrochemical system components without adaptation to BES requirements causes poor exploitation of the potential system performance. The electrode material is one central component that determines BES performance. While commercial carbon fiber (CF) fabrics are commonly used, their customizability as two- or three-dimensional electrode material for BES is rarely investigated. Using pure cultures of S. oneidensis MR-1, we identified CF properties impacting bacterial current generation: (1) The removal of the sizing (protective coating) is of great importance for all the fibers studied, as it acts as an electrical insulator. By desizing, the maximum current density (jmax) is increased by up to 40-fold. (2) Alteration of the filament surface chemistry results in an accelerated initial development of current generation, but the maximum current density (jmax) is hardly affected. (3) A specific yarn structure, the stretch-broken yarn, supports exceptionally high current densities. The good electrode performance is correlated to the presence of free filament ends (responsible for 41% current increase), which are characteristic for this yarn. (4) Moreover, a combination of these free filament ends with a high degree of graphitization enhances electrode performance of a commercial fabric by 100%. The results demonstrate that the CF selection can greatly influence the achievable electrode performance of CF fabrics, and thereby contributes to rational engineering of CF based electrodes that can be tailored for the many BES applications envisaged. |
topic |
carbon fiber electrode carbon fabric S. oneidensis MR-1 microbial fuel cells chemical surface activation desizing |
url |
https://www.frontiersin.org/article/10.3389/fenrg.2019.00100/full |
work_keys_str_mv |
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