A Portable Biofuel Cell Utilizing Agarose Hydrogel Containing Glucose

Goto, Hideaki; Sano, Ryohei; Fukushi, Yudai; Nishioka, Yasushiro

doi:10.1587/transele.e98.c.110

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…Thus, there have been many efforts to fabricate miniaturized glucose BFCs utilizing microelectromechanical system (MEMS) technologies. [4][5][6][7][8][9][10][11] Glucose BFCs with microfluidic channels have also been investigated to further increase the power densities of MEMS glucose BFCs. [12][13][14][15][16][17] However, the generated power of these glucose BFCs usually decreases as a function of time because the molecular sizes of these enzymes are very small with diameters of several nanometers, and they are easily removed from the surfaces of the electrode of BFCs, which is the major drawback against BFC commercialization.…”

Section: Introductionmentioning

confidence: 99%

Graphene-coated carbon fiber cloth for flexible electrodes of glucose fuel cells

Hoshi

Muramatsu²,

Sumi³

et al. 2016

Jpn. J. Appl. Phys.

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In this work, we fabricated flexible electrodes for a miniaturized, simple structured, and flexible glucose biofuel cell (BFC) using a graphene-coated carbon fiber cloth (GCFC). The areas of the anode and cathode electrodes were 3 × 10 mm2. The anode area was coated with the enzyme glucose oxidase, and the cathode area was coated with the enzyme bilirubin oxidase. No ion-exchange film was needed because glucose oxidase selectively oxidizes glucose and bilirubin oxidase selectively reduces oxygen. The power density of the BFC with GCFC electrodes in a phosphate buffer solution of 200 mM glucose solution at room temperature was 34.3 µW/cm2 at 0.43 V. The power density of a BFC using carbon fiber cloth (CFC) without graphene modification was 18.5 µW/cm2 at 0.13 V. The BFC with the GCFC electrode continued to function longer than 24 h with a power density higher than 5 µW/cm2. These effects were attributed to the much larger effective surface areas of the GCFC electrodes that maintain more enzymes than those of the CFC electrodes.

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Section: Introductionmentioning

confidence: 99%

Graphene-coated carbon fiber cloth for flexible electrodes of glucose fuel cells

Hoshi

Muramatsu²,

Sumi³

et al. 2016

Jpn. J. Appl. Phys.

Self Cite

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“…2) For example, much effort has been made to fabricate miniaturized glucose BFCs utilizing microelectromechanical system (MEMS) technologies. [3][4][5][6][7][8][9][10][11] Furthermore, glucose BFCs with microfluidic channels have been investigated to further increase the power densities of MEMS glucose BFCs. [12][13][14][15][16][17][18] However, it is also important to increase the quantity of enzymes and to immobilize them at the electrode surfaces to increase the power density.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized ascorbic acid fuel cells with flexible electrodes made of graphene-coated carbon fiber cloth

Hoshi

Muramatsu²,

Sumi³

et al. 2016

Jpn. J. Appl. Phys.

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Ascorbic acid (AA) is a biologically friendly compound and exists in many products such as sports drinks, fruit, and even in human blood. Thus, a miniaturized and flexible ascorbic acid fuel cell (AAFC) is expected be a power source for portable or implantable electric devices. In this study, we fabricated an AAFC with anode and cathode dimensions of 3 × 10 mm2 made of a graphene-coated carbon fiber cloth (GCFC) and found that GCFC electrodes significantly improve the power generated by the AAFC. This is because the GCFC has more than two times the effective surface area of a conventional carbon fiber cloth and it can contain more enzymes. The power density of the AAFC in a phosphate buffer solution containing 100 mM AA at room temperature was 34.1 µW/cm2 at 0.46 V. Technical issues in applying the AAFC to portable devices are also discussed.

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Enzymatic and microbial biofuel cells: current developments and future directions

Mukherjee

Patel

Shah

et al. 2022

Handbook of Biofuels

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A Portable Biofuel Cell Utilizing Agarose Hydrogel Containing Glucose

Cited by 3 publications

References 18 publications

Graphene-coated carbon fiber cloth for flexible electrodes of glucose fuel cells

Graphene-coated carbon fiber cloth for flexible electrodes of glucose fuel cells

Miniaturized ascorbic acid fuel cells with flexible electrodes made of graphene-coated carbon fiber cloth

Enzymatic and microbial biofuel cells: current developments and future directions

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