Two-dimensional Graphene Paper Supported Flexible Enzymatic Fuel Cell
| Autor: | Miguel D. Toscano, Fei Shen, Xinxin Xiao, Jingdong Zhang, Jens Ulstrup, Dmitrii Pankratov, Qijin Chi, Arnab Halder, Lo Gorton |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Immobilized enzyme Open-circuit voltage Graphene General Engineering Substrate (chemistry) Bioengineering Nanotechnology General Chemistry Atomic and Molecular Physics and Optics law.invention law Glucose dehydrogenase Electrode General Materials Science Bilirubin oxidase Graphene oxide paper |
| Zdroj: | Shen, F, Pankratov, D, Halder, A, Xiao, X, Toscano, M D, Zhang, J, Ulstrup, J, Lo, G & Chi, Q 2019, ' Two-dimensional Graphene Paper Supported Flexible Enzymatic Fuel Cell ', Nanoscale Advances . https://doi.org/10.1039/c9na00178f Shen, F, Pankratov, D, Halder, A, Xiao, X, Toscano, M D, Zhang, J, Ulstrup, J, Gorton, L & Chi, Q 2019, ' Two-dimensional Graphene Paper Supported Flexible Enzymatic Fuel Cell ', Nanoscale Advances, vol. 1, no. 7, pp. 2562-2570 . https://doi.org/10.1039/C9NA00178F |
| DOI: | 10.1039/c9na00178f |
| Popis: | Application of enzymatic biofuel cells (EBFCs) in wearable or implantable biomedical devices requires flexible and biocompatible electrode materials. To this end, freestanding and low-cost graphene paper is emerging among the...Application of enzymatic biofuel cells (EBFCs) in wearable or implantable biomedical devices requires flexible and biocompatible electrode materials. To this end, freestanding and low-cost graphene paper is emerging among the most promising support materials. In this work, we have exploited the potential of using graphene paper with two-dimensional active surface (2D-GP) as carriers for enzyme immobilization to fabricate EBFCs, which represents the first case of flexible graphene papers directly used in EBFCs. The 2D-GP electrodes were prepared via the assembly of graphene oxide (GO) nanosheets into paper-like architecture, followed by reduction to form layered and cross-linked networks with good mechanical strength, high conductivity and little dependent on the degree of mechanical bending. 2D-GP electrodes served as both a current collector and an enzyme loading substrate that can be used directly as bioanode and biocathode. Pyrroloquinoline quinone dependent glucose dehydrogenase (PQQ-GDH) and bilirubin oxidase (BOx) adsorbed on the 2D-GP electrodes both retain their biocatalytic activities. Electron transfer (ET) at the bioanode required Meldola blue (MB) as an ET mediator to shuttle electrons between PQQ-GDH and electrode, but direct electron transfer (DET) at the biocathode was achieved. The resulting glucose/oxygen EBFC displayed a notable mechanical flexibility, with wide open circuit voltage up to 0.665 V and maximum power density of approximately 4 µW/cm2 both fully competitive with reported values for related EBFCs, and with the mechanical flexibility and facile enzyme immobilization as novel merits. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|