Electrical energy from carbohydrate oxidation during viologen-catalyzed O2-oxidation: Mechanistic insights

Watt, Gerald D.; Hansen, Dane; Dodson, Daniel S.; Andrus, Merritt B.; Wheeler, Dean R.

doi:10.1016/j.renene.2010.10.016

Cited by 21 publications

(13 citation statements)

References 13 publications

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“…However, too high glucose concentration will lead to poor mass transport and difficulty in the adsorption of hydroxyl on the active site, which may reduce the cell performance [20]. As an electrocatalyst and electron mediator, MV will help to increase the rate of glucose oxidation reactions and enhance the electron transfer from glucose molecules to the current collector [31,32]. However, its function also depend on other factors, such as glucose and KOH concentration.…”

Section: Resultsmentioning

confidence: 99%

Performance of a low-cost direct glucose fuel cell with an anion-exchange membrane

Yang

Liu

Hao

et al. 2015

International Journal of Hydrogen Energy

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Section: Resultsmentioning

confidence: 99%

Performance of a low-cost direct glucose fuel cell with an anion-exchange membrane

Yang

Liu

Hao

et al. 2015

International Journal of Hydrogen Energy

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“…To increase the performance of a glucose-powered fuel cell using viologen mediators, Watt and co-workers investigated the mechanisms of glucose oxidation and mediator degradation. 177 Under mildly basic conditions, they identified the reaction of an enediol formed from glucose under basic conditions with MV 2+ as the important step for selectivity. High selectivity required high MV 2+ loadings to prevent the formation of inactive intermediates.…”

Section: Other Transition Metal-based Mediatorsmentioning

confidence: 99%

Mediated Fuel Cells: Soluble Redox Mediators and Their Applications to Electrochemical Reduction of O₂ and Oxidation of H₂, Alcohols, Biomass, and Complex Fuels

2020

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Mediated fuel cells are electrochemical devices that produce power in a manner similar to that of conventional proton exchange membrane fuel cells (PEMFCs). They differ from PEMFCs in their use of redox mediators dissolved in liquid electrolyte to conduct oxidation of the fuel or reduction of the oxidant, typically O 2 , in bulk solution. The mediators transport electrons (and often protons) between the electrode and the catalysts or chemical reagents in solution. This strategy can help overcome many of the challenges associated with conventional fuel cells, including managing complex multiphase reactions (as in O 2 reduction) or the use of challenging or heterogeneous fuels, such as hydrocarbons, polyols, and biomass. Mediators are also commonly used in enzymatic fuel cells, where direct electron transfer from the electrode to the enzymatic active site can be slow. This review provides a comprehensive survey of historical and recent mediated fuel cell efforts, including applications using chemical and enzymatic catalysts.

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“…Many studies have reported the conversion of biomass to electricity using fuel cell technologies . However, approaches on cellulose fuel cells are hindered by technical and economic problems, such as low performance, high cost, and unstable power output.…”

Section: Introductionmentioning

confidence: 99%

Direct Electricity Generation from Dissolved Cellulosic Biomass in an Alkaline Fuel Cell

et al. 2018

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Cellulose, which accounts for more than half of the carbon content in plants, has become a popular feedstock for biofuel production. In this work, direct electricity generation from dissolved cellulosic biomass in an alkaline fuel cell is explored without energy‐intensive process. The effect of different cellulose dissolution solvents on the electricity production is investigated. Results show dissolution treatment can remarkably affect the fuel cell performance. When NaOH/urea/thiourea is chosen as a solvent, the specific capacity of cellulose is about sixfold higher than that using only NaOH as solvent. The limiting current density and the maximum power density reach 0.85 mA cm−2 and 0.07 mW cm−2, respectively. This power density surpasses those of any existing biotic or abiotic designs. Electrochemical characterizations demonstrate that the remarkable activity improvement towards the cellulose oxidation reaction in NaOH/urea/thiourea aqueous solution is due to the lower charger transfer resistance and higher energy transfer efficiency.

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Electrical energy from carbohydrate oxidation during viologen-catalyzed O2-oxidation: Mechanistic insights

Cited by 21 publications

References 13 publications

Performance of a low-cost direct glucose fuel cell with an anion-exchange membrane

Performance of a low-cost direct glucose fuel cell with an anion-exchange membrane

Mediated Fuel Cells: Soluble Redox Mediators and Their Applications to Electrochemical Reduction of O₂ and Oxidation of H₂, Alcohols, Biomass, and Complex Fuels

Direct Electricity Generation from Dissolved Cellulosic Biomass in an Alkaline Fuel Cell

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Electrical energy from carbohydrate oxidation during viologen-catalyzed O2-oxidation: Mechanistic insights

Cited by 21 publications

References 13 publications

Performance of a low-cost direct glucose fuel cell with an anion-exchange membrane

Performance of a low-cost direct glucose fuel cell with an anion-exchange membrane

Mediated Fuel Cells: Soluble Redox Mediators and Their Applications to Electrochemical Reduction of O2 and Oxidation of H2, Alcohols, Biomass, and Complex Fuels

Direct Electricity Generation from Dissolved Cellulosic Biomass in an Alkaline Fuel Cell

Contact Info

Product

Resources

About

Mediated Fuel Cells: Soluble Redox Mediators and Their Applications to Electrochemical Reduction of O₂ and Oxidation of H₂, Alcohols, Biomass, and Complex Fuels