Improving the power performance of urine-fed microbial fuel cells using PEDOT-PSS modified anodes
| Autor: | C. Quijada, M.J. Salar-García, Francisco Montilla, Emilia Morallón, Ioannis Ieropoulos |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Química Física, Universidad de Alicante. Instituto Universitario de Materiales, Electrocatálisis y Electroquímica de Polímeros |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Microbial fuel cell
Materials science 020209 energy 02 engineering and technology Management Monitoring Policy and Law Urine Article 020401 chemical engineering PEDOT:PSS 0202 electrical engineering electronic engineering information engineering 13.- Tomar medidas urgentes para combatir el cambio climático y sus efectos Bioenergy Química Física 0204 chemical engineering 06.- Garantizar la disponibilidad y la gestión sostenible del agua y el saneamiento para todos Mechanical Engineering Microbial fuel cells Power performance Bristol Bio-Energy Centre Building and Construction Engineering physics Anode General Energy 07.- Asegurar el acceso a energías asequibles fiables sostenibles y modernas para todos PEDOT-PSS QUIMICA FISICA |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) Applied Energy RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| ISSN: | 0306-2619 |
| Popis: | [EN] The need for improving the energy harvesting from Microbial Fuel Cells (MFCs) has boosted the design of new materials in order to increase the power performance of this technology and facilitate its practical application. According to this approach, in this work different poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT-PSS) modified electrodes have been synthesised and evaluated as anodes in urine-fed MFCs. The electrochemical synthesis of PEDOT-PSS was performed by potentiostatic step experiments from aqueous solution at a fixed potential of 1.80 V (vs. a reversible hydrogen electrode) for different times: 30, 60, 120 and 240 s. Compared with other methods, this technique allowed us not only to reduce the processing time of the electrodes but also better control of the chemical composition of the deposited polymer and therefore, obtain more efficient polymer films. All modified anodes outperformed the maximum power output by MFCs working with the bare carbon veil electrode but the maximum value was observed when MFCs were working with the PEDOT-PSS based anode obtained after 30 s of electropolymerisation (535.1 µW). This value was 24.3 % higher than using the bare carbon veil electrode. Moreover, the functionality of the PEDOT-PSS anodes was reported over 90 days working in continuous mode. M.J. Salar-Garcia is supported by Fundacion Seneca (Ref: 20372/PD/17). I. Ieropoulos is grateful to the Gates Foundation (Ref: OPP1149065) for the financial support of parts of this work. The other authors also thank the support of Generalitat Valenciana (Ref: PROMETEO/2018/087). |
| Databáze: | OpenAIRE |
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