Efficiency of Neat and Quaternized-Cellulose Nanofibril Fillers in Chitosan Membranes for Direct Ethanol Fuel Cells Article Swipe
Maša Hren
,
Damjan Makuc
,
Janez Plavec
,
Michaela Roschger
,
Viktor Hacker
,
Boštjan Genorio
,
Mojca Božič
,
Selestina Gorgieva
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/polym15051146
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/polym15051146
In this work, fully polysaccharide based membranes were presented as self-standing, solid polyelectrolytes for application in anion exchange membrane fuel cells (AEMFCs). For this purpose, cellulose nanofibrils (CNFs) were modified successfully with an organosilane reagent, resulting in quaternized CNFs (CNF (D)), as shown by Fourier Transform Infrared Spectroscopy (FTIR), Carbon-13 (C13) nuclear magnetic resonance (13C NMR), Thermogravimetric Analysis (TGA)/Differential Scanning Calorimetry (DSC), and ζ-potential measurements. Both the neat (CNF) and CNF(D) particles were incorporated in situ into the chitosan (CS) membrane during the solvent casting process, resulting in composite membranes that were studied extensively for morphology, potassium hydroxide (KOH) uptake and swelling ratio, ethanol (EtOH) permeability, mechanical properties, ionic conductivity, and cell performance. The results showed higher Young’s modulus (119%), tensile strength (91%), ion exchange capacity (177%), and ionic conductivity (33%) of the CS-based membranes compared to the commercial Fumatech membrane. The addition of CNF filler improved the thermal stability of the CS membranes and reduced the overall mass loss. The CNF (D) filler provided the lowest (4.23 × 10−5 cm2 s−1) EtOH permeability of the respective membrane, which is in the same range as that of the commercial membrane (3.47 × 10−5 cm2s−1). The most significant improvement (~78%) in power density at 80 °C was observed for the CS membrane with neat CNF compared to the commercial Fumatech membrane (62.4 mW cm−2 vs. 35.1 mW cm−2). Fuel cell tests showed that all CS-based anion exchange membranes (AEMs) exhibited higher maximum power densities than the commercial AEMs at 25 °C and 60 °C with humidified or non-humidified oxygen, demonstrating their potential for low-temperature direct ethanol fuel cell (DEFC) applications.
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- Type
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- Language
- en
- Landing Page
- https://doi.org/10.3390/polym15051146
- https://www.mdpi.com/2073-4360/15/5/1146/pdf?version=1678436519
- OA Status
- gold
- Cited By
- 9
- References
- 41
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4322503538
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4322503538Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/polym15051146Digital Object Identifier
- Title
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Efficiency of Neat and Quaternized-Cellulose Nanofibril Fillers in Chitosan Membranes for Direct Ethanol Fuel CellsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-02-24Full publication date if available
- Authors
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Maša Hren, Damjan Makuc, Janez Plavec, Michaela Roschger, Viktor Hacker, Boštjan Genorio, Mojca Božič, Selestina GorgievaList of authors in order
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https://doi.org/10.3390/polym15051146Publisher landing page
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https://www.mdpi.com/2073-4360/15/5/1146/pdf?version=1678436519Direct link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://www.mdpi.com/2073-4360/15/5/1146/pdf?version=1678436519Direct OA link when available
- Concepts
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Chitosan, Cellulose, Membrane, Ethanol, Chemical engineering, Materials science, Polymer chemistry, Chemistry, Organic chemistry, Engineering, BiochemistryTop concepts (fields/topics) attached by OpenAlex
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9Total citation count in OpenAlex
- Citations by year (recent)
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2025: 4, 2024: 4, 2023: 1Per-year citation counts (last 5 years)
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41Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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