SiOC-based polymer derived-ceramic porous anodes for microbial fuel cells

Silva, Thamires Canuto de Almeida e; Bhowmick, Gourav Dhar; Ghangrekar, Makarand M.; Wilhelm, Michaela; Rezwan, Kurosch

doi:10.1016/j.bej.2019.04.004

Cited by 34 publications

(17 citation statements)

References 42 publications

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“…Polymeric derived ceramics (PDC) route has been employed in making a highly conductive hydrophilic polymeric nanocomposite of poly(methylsilsesquioxane) and poly(methyl phenyl silsesquioxane) composited with graphite and carbon black. 42 The novel anode material records two-fold increase in power density (211 mW/m 2 ) compared to carbon felt anode (111 mW/m 2 ). When the MFC system is applied for wastewater treatment, similar COD removal rate and CE are recorded for modified and pristine anode electrodes.…”

Section: Nanocomposites Of Other Polymersmentioning

confidence: 94%

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Polymeric nanocomposition for innovative functional enhancement of electrodes and proton exchange membrane in microbial fuel cell

Sirajudeen

Annuar

2021

JSCS

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Practical application of microbial fuel cell (MFC), a sustainable energy device, is hampered by low power output. Its principal components i.e. anode, cathode and proton exchange membrane (PEM) are the focus of enhancement and modification in terms of their functional design and material. The anode surface conduciveness as electron sink is crucial to the power output magnitude, while the cathode electrode should be reactive for efficient oxygen reduction at tri-phase junction. PEM is solely responsible for unidirectional proton flow concomitantly completing the electrical circuit. Polymeric nanocomposites as electrode modifier improved significantly anode/cathode/PEM functions thus overall MFC performance. The review highlights the progress made in polymer-based modifications to anode, cathode and PEM material and function between year 2014 to 2019. The effects to biocompatibility, surface area, internal resistance, electrochemical activities, environmental sustainability, and overall MFC performance are discussed.

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Section: Nanocomposites Of Other Polymersmentioning

confidence: 94%

“…The high specific surface area of the modified anode as well as its porous structure results in superior biocompatibility as evidenced by extensive biofilm growth on the electrode surface, and consequently improve electron transfer process. 42…”

Section: Nanocomposites Of Other Polymersmentioning

confidence: 99%

Polymeric nanocomposition for innovative functional enhancement of electrodes and proton exchange membrane in microbial fuel cell

Sirajudeen

Annuar

2021

JSCS

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“…SiOC anode materials were prepared using poly(methyl silsesquioxane) (Silres® MK, Wacker Chemie AG) and poly(methyl phenyl silsesquioxane) (Silres® H44, Wacker Chemie AG) as preceramic precursors combined with carbon‐based conductive phases as reported previously [17] . Graphite (KS75, IMERYL Graphite and Carbon) was added to improve the electrical conductivity, based on previous works [8,17,34] . Carbon black (CB, Vulcan XC72 Cabot) was additionally incorporated as a second carbon‐based conductive filler in a distinct composition.…”

Section: Methodsmentioning

confidence: 99%

“…For improving the BES performance an engineering of the micro‐ and macrostructure, as well as the surface properties of the anode is required [6] . These properties include, for instance, good electrical conductivity, biocompatibility, and sufficient mechanical strength [7,8] . Development of anodes endowing these properties ranges from 2D‐materials namely, glassy carbon, carbon paper and carbon cloth to 3D‐materials such as carbon brush, nickel‐coated sponges and graphite granules due to their higher surface area for bacterial attachment [3,9] .…”

Section: Introductionmentioning

confidence: 99%

“…Among the diverse classes of alternative anode materials, porous ceramic materials seem a suitable choice, as they offer the possibility to tune the pore structure, density, and chemical stability [16] . To approach the use of these advantages and surpass the inherently non‐conductive nature of ceramics, polymer‐derived ceramics (PDCs) arise as a promising alternative as electrodes for BES [8,17] . PDCs are a new class of material that is synthesized from a suitable polymeric precursor that is converted to ceramic through cross‐linking followed by pyrolysis [18,19] .…”

Section: Introductionmentioning

confidence: 99%

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Impact of Surface Properties of Porous SiOC‐Based Materials on the Performance of Geobacter Biofilm Anodes

et al. 2021

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Porous SiOC tapes were studied as anodes for bioelectrochemical system (BES) using Geobacter spp. as an electroactive microorganism (EAM). The ceramic anodes were produced by tape‐casting of poly(silsesquioxanes), tailoring the surface properties by incorporating graphite and carbon black, and changing the pyrolysis temperature. By varying these parameters, the specific surface area, the hydrophilicity, and the roughness were adjusted, with the pyrolysis temperature playing a major role. When used as anodes at 0.2 V vs. Ag/AgCl sat. KCl in the BES, maximum current densities relative to the geometric surface area (jGSA) up to 5.8 A m−2 were achieved. Microbial community analysis of the biofilm shows the dominant presence of Geobacter spp. as the EAM. Benchmarking the performance of the anodes of this study with anodes using the same EAM demonstrates that porous SiOC anodes are a promising class of materials, as they show jGSA comparable to carbon‐based anodes.

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Carbon‐Based Composites as Anodes for Microbial Fuel Cells: Recent Advances and Challenges

et al. 2021

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site). The relationship is demonstrated in depth between the physicochemical properties of the anode surface/interface/bulk (porosity, surface area, hydrophilicity, partical size, charge, roughness, etc.) and the bioelectrochemical performances (electron transfer, electrolyte diffusion, capacitance, toxicity, start-up time, current, power density, voltage, etc.). An outlook for future work is also proposed.

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SiOC-based polymer derived-ceramic porous anodes for microbial fuel cells

Cited by 34 publications

References 42 publications

Polymeric nanocomposition for innovative functional enhancement of electrodes and proton exchange membrane in microbial fuel cell

Polymeric nanocomposition for innovative functional enhancement of electrodes and proton exchange membrane in microbial fuel cell

Impact of Surface Properties of Porous SiOC‐Based Materials on the Performance of Geobacter Biofilm Anodes

Carbon‐Based Composites as Anodes for Microbial Fuel Cells: Recent Advances and Challenges

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