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Hydrogen production with polyaniline/multi‐walled carbon nanotube cathode catalysts in microbial electrolysis cells
Abstract
BACKGROUND Microbial electrolysis cells (MECs) have been considered a promising approach for hydrogen production from renewable biomass. The optimization of the cathode catalyst is important in the study of MECs. Based on the hydrogen production rate (Q) and the chemical oxygen demand (COD) removal as the evaluation standards, this research focused on the use of the polyaniline (PANI)/multi‐walled carbon nanotube (MWCNT) composites as the cathode catalysts to replace platinum (Pt) in a single‐chamber membrane‐free MEC. RESULTS Scanning electron microscopy (SEM) and linear sweep voltammograms (LSV) were used to evaluate the morphology and electrocatalytic activity of the cathodes. At an applied voltage of 1.0 V, the MEC with 75% wt PANI/MWCNTs cathodes achieved a hydrogen production rate of 1.04 m3 m−3 d−1 at a current density of 163 A m−3, a coulombic efficiency of 47.2%, a cathodic hydrogen recovery of 56.7%, a COD removal of 88%, and an electrical energy efficiency based on an electricity input of 89%, which was comparable with that of a Pt/C cathode. CONCLUSIONS The PANI/MWCNTs cathodes developed achieved a performance comparable with that of the Pt/C cathode in terms of the hydrogen production rate. The PANI/MWCNTs composites used as cathodic catalysts to replace Pt/C substantially reduced the cost of the MECs. © 2014 Society of Chemical Industry
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Conventional noble metal catalysts such as Pt/C exhibit high catalytic activity, but their high cost and limited availability restrict their application.
“Conventional noble metal catalysts such as Pt/C exhibit high catalytic activity, but their high cost and limited availability restrict their application [46].”
From Dual-function aerogel electrocatalyst enabling efficient hydrogen production and ambient-temperature hydrogen detection (2026) · cites this paper as [46]
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Metadata
- Authors
- Yang, Q., Jiang, Y., Xu, Y., Qiu, Y., Chen, Y., Zhu, S., & Shen, S.
- Affiliations
- Nanjing Tech University (CN)
- The College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 210009 China
- Corresponding author
- Chen, Yingwen
- Venue
- Journal of Chemical Technology & Biotechnology
- Publisher
- Wiley
- Published
- 2014-05-30
- Volume
- 90
- Issue
- 7
- Pages
- 1263-1269
- ISSN
- 0142-0356 (ISSN-L)
- 0268-2575
- 1097-4660
- OpenAlex
- W1513166606
- Cited by
- 34
- References
- 26
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 7 · 2023: 2 · 2022: 2 · 2021: 2 · 2019: 4 · 2018: 2 · 2017: 4 · 2016: 1 · 2015: 2
- FWCI
- 1.79
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Chemical Technology & Biotechnology (publishedVersion)
- Funders
- Ministerio de Economía y Competitividad
- Topics
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
- Keywords
- microbial electrolysis cells, hydrogen production, polyaniline, multi-walled carbon nanotubes, cathode catalysts, platinum-free catalysts, COD removal, electrocatalytic activity, biomass hydrogen production, Coulombic efficiency
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