Gas diffusion bioelectrodes

So, Keisei; Sakai, Kyosuke; Kano, Kenji

doi:10.1016/j.coelec.2017.09.001

Cited by 47 publications

(44 citation statements)

References 46 publications

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“…[27] Microporous GDEs were first modified with at hin layer of MWCNTs. [27] Microporous GDEs were first modified with at hin layer of MWCNTs.…”

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

“…Gas-diffusion electrodes (GDEs) are used in fuel cell systems, allowingt he catalystt ow ork at the interface between the electrolyte, the electrode, and the gas phase. [27] Microporous GDEs were first modified with at hin layer of MWCNTs. These MWCNT-coated GDEs were then modified with 6-carboxynaphthalenediazonium tetrafluoroborate and MoBOD.…”

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

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Direct Electrochemistry of Bilirubin Oxidase from Magnaporthe orizae on Covalently‐Functionalized MWCNT for the Design of High‐Performance Oxygen‐Reducing Biocathodes

Gentil

Carrière

Cosnier

et al. 2018

Chemistry A European J

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Herein, the direct electrochemistry of bilirubin oxidase from Magnaporthe orizae (MoBOD) was studied on CNTs functionalized by electrografting several types of diazonium salts. The functionalization induces favorable or unfavorable orientation of MoBOD, the latter being compared to the well-known BOD from Myrothecium verrucaria (MvBOD). On the same nanostructured electrodes, MoBOD can surpass MvBOD in terms of both current densities and minimal overpotentials. Added to the fact that MoBOD is also highly active at the gas-diffusion electrode (GDE), these findings make MoBOD one of the MCOs with the highest catalytic activity towards the oxygen reduction reaction (ORR).

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“…[27] Microporous GDEs were first modified with at hin layer of MWCNTs. [27] Microporous GDEs were first modified with at hin layer of MWCNTs.…”

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

Direct Electrochemistry of Bilirubin Oxidase from Magnaporthe orizae on Covalently‐Functionalized MWCNT for the Design of High‐Performance Oxygen‐Reducing Biocathodes

Gentil

Carrière

Cosnier

et al. 2018

Chemistry A European J

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“…This effect tremendously increases the local substrate gradient at the biocatalyst site by an enhanced substrate flux. Evidently, such gas diffusion layers are highly relevant for potential technological applications 20 , 21 and a theoretical power output calculated from the results obtained for the individual hydrogenase (bioanode) and bilirubin oxidase (biocathode) half cells of up to 8.4 mW cm −2 has been reported 22 .…”

Section: Introductionmentioning

confidence: 98%

“… 9 , 10 and references cited therein). To further enhance the current densities and thus the power output of such BFCs, porous, high surface area 19 or gas diffusion electrodes 20 , 21 can be employed. The latter strategy circumvents limitations arising from slow mass transport and the low solubility of the gaseous substrate in the aqueous electrolyte by establishing a triple-phase boundary at the electrode/electrolyte/gas interface.…”

Section: Introductionmentioning

confidence: 99%

A gas breathing hydrogen/air biofuel cell comprising a redox polymer/hydrogenase-based bioanode

et al. 2018

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Hydrogen is one of the most promising alternatives for fossil fuels. However, the power output of hydrogen/oxygen fuel cells is often restricted by mass transport limitations of the substrate. Here, we present a dual-gas breathing H2/air biofuel cell that overcomes these limitations. The cell is equipped with a hydrogen-oxidizing redox polymer/hydrogenase gas-breathing bioanode and an oxygen-reducing bilirubin oxidase gas-breathing biocathode (operated in a direct electron transfer regime). The bioanode consists of a two layer system with a redox polymer-based adhesion layer and an active, redox polymer/hydrogenase top layer. The redox polymers protect the biocatalyst from high potentials and oxygen damage. The bioanodes show remarkable current densities of up to 8 mA cm-2. A maximum power density of 3.6 mW cm-2 at 0.7 V and an open circuit voltage of up to 1.13 V were achieved in biofuel cell tests, representing outstanding values for a device that is based on a redox polymer-based hydrogenase bioanode.

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“…17,23,103 For gaseous substrates, several types of gas-diffusion-type bioelectrodes were proposed. 104 Some examples of biofuel cells with relatively high power were introduced. As MET-type system, a glucose/O 2 biofuel cell with NAD-GDH and diaphorase as anode catalysts provided a maximum power density (P max ) of 5 mW cm ¹2 at a cell voltage (E cell ) of 0.5 V, 105 in which two electrons of glucose was utilized.…”

Section: Biofuel Cells and Bioreactorsmentioning

confidence: 99%

Fundamentals and Applications of Redox Enzyme-functionalized Electrode Reactions

Kano

2019

Electrochemistry

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Electrochemical coupling of redox enzyme reactions, called bioelectrocatalysis, has been attracting great attention over the last four decades. It has become an important technology that can be applied to a wide range of bioelectrochemical devices including biosensors, biofuel cells, and bioreactors. This article presents an overview of the basic concepts of steady-state catalytic waves of mediated-and direct electron transfer (DET)-type bioelectrocatalysis. Several equations that can be used for the analysis of steady-state waves are introduced. The analysis may provide important thermodynamic and kinetic parameters that can be used not only for performance evaluation of the devices but also for fundamental research on the enzymes. Important progress made on how to tune electrode surfaces and enzymes for DET-type reactions are presented. Applications to bioelectrochemical devices are also summarized with emphasis on the achievements recorded in our research group.

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Gas diffusion bioelectrodes

Cited by 47 publications

References 46 publications

Direct Electrochemistry of Bilirubin Oxidase from Magnaporthe orizae on Covalently‐Functionalized MWCNT for the Design of High‐Performance Oxygen‐Reducing Biocathodes

Direct Electrochemistry of Bilirubin Oxidase from Magnaporthe orizae on Covalently‐Functionalized MWCNT for the Design of High‐Performance Oxygen‐Reducing Biocathodes

A gas breathing hydrogen/air biofuel cell comprising a redox polymer/hydrogenase-based bioanode

Fundamentals and Applications of Redox Enzyme-functionalized Electrode Reactions

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