Direct electron transfer-type dual gas diffusion H<sub>2</sub>/O<sub>2</sub>biofuel cells

So, Keisei; Kitazumi, Yuki; Shirai, Osamu; Nishikawa, Koji; Higuchi, Yoshiki; Kano, Kenji

doi:10.1039/c6ta02654k

Cited by 60 publications

(62 citation statements)

References 88 publications

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“…[27] Microporous GDEs were first modified with at hin layer of MWCNTs. [12,16,19,[28][29][30] CV of the GDE is displayed on Figure 5.…”

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

“…Owing to the improved availability of oxygen, electrocatalytic current densities of 7.1 mA cm À2 could be reached under air ando xygen, respectively.T his is in the range of best MCO-modified GDEs which are mostly based on MvBOD. [12,16,19,[28][29][30]…”

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

“…[1,3,5,6] However,t ransferring electrons to an enzyme'sr edox active site re-quirest he use of different strategiesa imed at maximizing the amount of electroactive enzymes and electron transfer rates at the surface of bioelectrodes.S everalo ft hese BODs, in particular,t he commercially available BOD from Myrotheciumv errucaria (MvBOD) have been extensively studied, achieving eithera directe lectron transfer (DET) at the modified electrode or mediated electron transfer (MET) through entrapment in redox hydrogels. [12,13] Carbon nanotubes (CNTs) possess ac ombination of properties that make them ap rivileged electrode material. Different studies have shown that orientation of MvBOD through electrostatic interactions using positivelyo rn egatively charged surfaces could promote DETof MvBOD.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] In particular, the use of carbon-based nanomaterials for enzymes upport has increasedt he number of enzymes per surface unit. [12,13] Carbon nanotubes (CNTs) possess ac ombination of properties that make them ap rivileged electrode material. Apart from high film conductivity and high electroactive area, CNTsc an be modified with aw ide range of functional molecules using aw ider ange of chemicalm odification process.…”

Section: Introductionmentioning

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. [12,16,19,[28][29][30] CV of the GDE is displayed on Figure 5.…”

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

Section: Gas-diffusion Electrodesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Nanomaterials, such as carbon nanotubes, mesoporous media, and gold nanoparticles, have been reported to be a powerful tool to create platforms for DET-type bioelectrocatalysis. [3][4][5][6][7][8][9][10][11][12][13][14][15] Such improvement through the effects of nanomaterials is often attributed to an increase in the amount of enzymes adsorbed on modified-electrodes with large surface areas.…”

Section: Introductionmentioning

confidence: 99%

Effects of Mesoporous Structures on Direct Electron Transfer-Type Bioelectrocatalysis: Facts and Simulation on a Three-Dimensional Model of Random Orientation of Enzymes

et al. 2017

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Direct electron transfer (DET)-type bioelectrocatalytic waves of bilirubin oxidase (BOD)-catalyzed O 2 reduction and [NiFe] hydrogenase (H 2 ase)-catalyzed H 2 oxidation are very small and un-detectable using glassy carbon (GC) electrodes, respectively; however, clear catalytic waves are observed when the enzymes are adsorbed on Ketjen black-modified GC (KB-GC) electrodes, in which KB provides mesopores for DET-type bioelectocatalysis. To explain the phenomena, we focus on the curvature effect of mesoporous structures on long range electron transfer kinetics and simulate steady-state voltammograms catalyzed by model redox enzymes adsorbed with a random orientation on planar and mesoporous electrodes based on a three-dimensional model. In the simulation, we assume a spherical enzyme with a radius of r, an active site located at a certain distance from the center of the enzyme, and a spherical pore with a radius of R p in mesoporous electrodes in which the enzyme is trapped and adsorbed. The simulation reveals that mesoporous electrodes provide platforms suitable for DET-type bioelectrocatalysis of enzymes when R p becomes close to r. Such curvature effects of mesoporous electrodes become especially notable for larger sized enzymes. Furthermore, the simulation reproduces the experimental data of BOD-and H 2 asecatalyzed DET-type waves by considering the crystal structures of the enzymes. This work will open a route to improve the kinetic performance of the DET-type bioelectrocatalysis that has become very important in its practical application to a variety of bioelectrochemical devices.

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Eine Redoxpolymer‐basierte Gasdiffusions‐H₂‐Oxidationsbioanode mit hoher Stromdichte unter Verwendung von [FeFe]‐Hydrogenase aus Desulfovibrio desulfuricans integriert in einer membranfreien Biobrennstoffzelle

et al. 2020

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Die Verwendung hochaktiver, aber zeitgleich auch hochempfindlicher Katalysatoren (z. B. [FeFe]‐Hydrogenase aus Desulfovibrio desulfuricans) in Biobrennstoffzellen ist nach wie vor eine der größten Herausforderungen bei der nachhaltigen Energieumwandlung. Wir berichten über die Herstellung einer auf Gasdiffusionselektroden‐basierten H2 /O2‐Biobrennstoffzelle, die mit einer [FeFe]‐Hydrogenase/Redoxpolymer‐basierten H2‐Oxidationsbioanode mit hoher Stromdichte ausgestattet ist. Die Bioanoden zeigen Benchmark‐Stromdichten von ca. 14 mA cm−2, und die entsprechenden Brennstoffzellentests zeigen einen Benchmark für eine Polymer/Hydrogenase‐basierte Biobrennstoffzelle mit herausragenden Leistungsdichten von 5.4 mW cm−2 bei 0.7 V Zellspannung. Darüber hinaus wird die hochempfindliche [FeFe]‐Hydrogenase durch das Redoxpolymer vor Sauerstoffschäden geschützt und kann unter 5 % O2 arbeiten.

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Direct electron transfer-type dual gas diffusion H₂/O₂biofuel cells

Abstract: H2/O2biofuel cells utilizing hydrogenases and multicopper oxidases as bioelectrocatalysts are clean, sustainable, and environmentally friendly power devices.

Cited by 60 publications

References 88 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

Effects of Mesoporous Structures on Direct Electron Transfer-Type Bioelectrocatalysis: Facts and Simulation on a Three-Dimensional Model of Random Orientation of Enzymes

Eine Redoxpolymer‐basierte Gasdiffusions‐H₂‐Oxidationsbioanode mit hoher Stromdichte unter Verwendung von [FeFe]‐Hydrogenase aus Desulfovibrio desulfuricans integriert in einer membranfreien Biobrennstoffzelle

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Direct electron transfer-type dual gas diffusion H2/O2biofuel cells

Abstract: H2/O2biofuel cells utilizing hydrogenases and multicopper oxidases as bioelectrocatalysts are clean, sustainable, and environmentally friendly power devices.

Cited by 60 publications

References 88 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

Effects of Mesoporous Structures on Direct Electron Transfer-Type Bioelectrocatalysis: Facts and Simulation on a Three-Dimensional Model of Random Orientation of Enzymes

Eine Redoxpolymer‐basierte Gasdiffusions‐H2‐Oxidationsbioanode mit hoher Stromdichte unter Verwendung von [FeFe]‐Hydrogenase aus Desulfovibrio desulfuricans integriert in einer membranfreien Biobrennstoffzelle

Contact Info

Product

Resources

About

Direct electron transfer-type dual gas diffusion H₂/O₂biofuel cells

Eine Redoxpolymer‐basierte Gasdiffusions‐H₂‐Oxidationsbioanode mit hoher Stromdichte unter Verwendung von [FeFe]‐Hydrogenase aus Desulfovibrio desulfuricans integriert in einer membranfreien Biobrennstoffzelle