Enhanced power generation using a novel polymer-coated nanoparticles dispersed-carbon micro-nanofibers-based air-cathode in a membrane-less single chamber microbial fuel cell

Singh, Shiv; Modi, Akshay; Verma, Nishith

doi:10.1016/j.ijhydene.2015.10.099

Cited by 78 publications

(28 citation statements)

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“…8) that, the curves bend shifted right and responds to changes with changing forms of the carbon. For the Si/CB and Si/NCNT samples, there is a substantial decrease in impedance, which is, in fact, the reduction in impedance for the electron transfer process [31,35]. The size of the Nyquist semicircle considerably decreased for the Si/CB because of the decrease in charge transfer resistance, attributed to the high kinetic rate and also due to the relatively high conductive surface which proved to be responsible for the high charge transfer rate [36].…”

Section: Resultsmentioning

confidence: 98%

“…On parallel, polymermetallic based carbonaceous nanocomposites and further nitrogen-doped approach are used to improve microbial fuel cells exhibiting high electrochemical activity [29,30]. Carbon nanotubes (CNTs) and Graphene (G), a promising class of carbon nanomaterials, have attracted considerable attention due to interesting electronic, photonic, and electrocatalytic characteristics, and are actively used in energy conversion and storage [31,32]. This provides a new window to develop and investigate new generations of graphene and promising CNT-based heterogeneous nitrogen-doped materials for energy conversion systems.…”

Section: Introductionmentioning

confidence: 99%

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Silicon-based carbonaceous electrocatalysts for oxygen reduction and evolution properties in alkaline conditions

Asghar

Iqbal

2019

SN Appl. Sci.

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In this contribution, new electrocatalyst materials, namely silicon-multiwalled carbon nanotubes (Si/MWCNTs), nitrogendoped multiwalled carbon nano-tubes (Si/NCNTs), and silicon-carbon black (Si/CB), were developed and characterized in an effort to investigate less expensive and more efficient alternatives to Pt-based catalysis for energy storage cells applications. The role of structural behavior of obtained specimens and corresponding electrochemical performances were characterized through X-ray diffraction and scanning electron microscopy, while cyclic voltammetry and electrochemical impedance spectroscopy were analyzed for electrochemical measurements and evaluation of oxygen evolution reaction (OER) along with oxygen reduction reaction (ORR). The electrochemical studies have shown that these materials exhibit reasonable performance for both the ORR and the OER. The findings concluded that the Si/CB base catalyst has shown both OER and ORR activities in comparison to Si/MWCNTs and Si/NCNTs where only ORR performance was monitored. However, Si/NCNTs have shown much higher ORR activity compared to the others. This work highlights the comparison of three possible alternative materials as a potential catalyst to develop optimum alternatives of Pt-free catalysts for fuel cell and lithium-based battery systems.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Silicon-based carbonaceous electrocatalysts for oxygen reduction and evolution properties in alkaline conditions

Asghar

Iqbal

2019

SN Appl. Sci.

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“…Usually two different types of MFCs configuration have been in use: double chamber microbial fuel cells (DMFCs) and single chamber microbial fuel cells (SMFCs). The benefits of SMFCs over DMFCs are low construction costs, reduced reactor volume, and operated without purging oxygen/catholyte , . Recent research on miniaturize MFCs has been getting the attention not only because of eliminating pollution or power generation, but their biomedical and defense applications .…”

Section: Introductionmentioning

confidence: 99%

“…There have been some challenges in using air cathode for SMFCs as biofilm formation occurs on the cathode surface due to intimate contact with the porous membrane, which leads to increase in proton transport resistance and decrease in the power generation efficiency . Another operational problem in membrane‐less SMFCs is the diffusion of oxygen to the anode through cathode‐side material which can also decrease the performance . The main advantages of miniaturized MFC have been its high surface area to volume ratio chamber for enhanced proton diffusion, stackable and scale up.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Performance of a Single Chamber Microbial Fuel Cell Using NiWO₄/Reduced Graphene Oxide Coated Carbon Cloth Anode

2019

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Microbial fuel cell (MFC) technology has potential to generate bioelectricity. However, the low power density problem is considerably associated with anode materials and its performance. In this study, modified anodes for single chamber MFC (SMFC) have been developed using NiWO4 impregnated on reduced graphene oxide (rGO) (NWG) composite. The analytical and morphological properties of rGO, NiWO4 particles and NWG composites have been characterized by FTIR, XRD, SEM and TEM. The electrochemical activity and capacitance of modified anode(s) are determined by cyclic voltammetry and galvanostatics charge‐discharge, respectively. Modified NWG composite (2 mmol)‐carbon cloth (CC) anode has highest capacitance value of 47.27 ± 0.18 F cm−2. The maximum power density obtained by modified NWG composite (2 mmol)‐CC anode was observed to be 1128 ± 42 mW m−2 which was 6.57 times higher than the unmodified anode (171 ± 8 mW m−2). Electrochemical impedance spectra results indicate a substantial improvement in electron transfer between the microbes and the modified NWG composites‐CC anodes. The decrease in the internal resistance of SMFC system is observed due to the improved electrochemical capacitance and synergistic effect between NiWO4 and rGO. In conclusion, modified NWG composites‐CC anodes enhance the performance considerably and show excellent potential in electrode surface electrocatalyst modifier in MFCs.

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“…A recent method involves anaerobic microbial decomposition of biomass to produce gases like methane and carbon di oxide. A novel carbon based nanocomposite was developed using E.coli as a microbial catalyst [8], nano Ni dispersed carbon-nano-fibers (CNFs) were developed on activated carbon substrate [9][10][11]. These can be purified by an up-graded method to more sought-after forms, appropriate for fuel-cells, engines, boilers, industrial-heaters and gas-turbines, etc.…”

Section: Introductionmentioning

confidence: 99%

Biomass based bio-electro fuel cells based on carbon electrodes: an alternative source of renewable energy

Pandey

2019

SN Appl. Sci.

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The increasing concerns for sustainable economy and alarming environmental health are making researchers to pay serious attention to bio-fuels that too primarily synthesized from the biomass. An energy transforming machine extracting energy directly from biomass would be an idyllic condition. Regrettably, devices using sustainable energy resource have shown to have low output, not meeting the demands of practical appliances. Serious efforts are being dedicated to research on the prospects of bio-fuel powered fuel cells as green energy exchange tool. To comprehend this, scientists are working on the production and expansion biological fuel cell (BFC) which are electro-chemical devices utilizing electro-active bacteria for producing electricity through oxidation. The materials used for electrodes in BFCs, should have conductivity, porosity, biocompatibility, low in cost and recyclability. The materials tested for BFCs are principally metalbased, carbon-based or purposely built advanced materials. The research efforts over the last decade have positioned macro-porous and composite of carbon-based nanostructures with controllable surface and electronic characteristics to be used as a support-matrix for metallic electro catalysts or as proficient non-metallic electro catalysts in BFCs. This review article discusses about the present challenges and future prospects in the field of current progresses in the field of carbon based catalysis system for biomass based microbial fuel cells which extract energy from biomass resources either directly or indirectly.

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Enhanced power generation using a novel polymer-coated nanoparticles dispersed-carbon micro-nanofibers-based air-cathode in a membrane-less single chamber microbial fuel cell

Cited by 78 publications

References 50 publications

Silicon-based carbonaceous electrocatalysts for oxygen reduction and evolution properties in alkaline conditions

Silicon-based carbonaceous electrocatalysts for oxygen reduction and evolution properties in alkaline conditions

Enhanced Performance of a Single Chamber Microbial Fuel Cell Using NiWO₄/Reduced Graphene Oxide Coated Carbon Cloth Anode

Biomass based bio-electro fuel cells based on carbon electrodes: an alternative source of renewable energy

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Enhanced power generation using a novel polymer-coated nanoparticles dispersed-carbon micro-nanofibers-based air-cathode in a membrane-less single chamber microbial fuel cell

Cited by 78 publications

References 50 publications

Silicon-based carbonaceous electrocatalysts for oxygen reduction and evolution properties in alkaline conditions

Silicon-based carbonaceous electrocatalysts for oxygen reduction and evolution properties in alkaline conditions

Enhanced Performance of a Single Chamber Microbial Fuel Cell Using NiWO4/Reduced Graphene Oxide Coated Carbon Cloth Anode

Biomass based bio-electro fuel cells based on carbon electrodes: an alternative source of renewable energy

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Enhanced Performance of a Single Chamber Microbial Fuel Cell Using NiWO₄/Reduced Graphene Oxide Coated Carbon Cloth Anode