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Two-dimensional gra...
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Shen, FeiTechnical University of Denmark
(author)
Two-dimensional graphene paper supported flexible enzymatic fuel cells
- Article/chapterEnglish2019
Publisher, publication year, extent ...
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2019
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Royal Society of Chemistry (RSC),2019
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9 s.
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LIBRIS-ID:oai:lup.lub.lu.se:f3ae5717-d485-4832-8c48-c949d00da78c
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https://lup.lub.lu.se/record/f3ae5717-d485-4832-8c48-c949d00da78cURI
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https://doi.org/10.1039/c9na00178fDOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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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 a two-dimensional active surface (2D-GP) as a carrier for enzyme immobilization to fabricate EBFCs, representing 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 a paper-like architecture, followed by reduction to form layered and cross-linked networks with good mechanical strength, high conductivity and little dependence 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 a 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 the electrode, but direct electron transfer (DET) at the biocathode was achieved. The resulting glucose/oxygen EBFC displayed a notable mechanical flexibility, with a wide open circuit voltage range up to 0.665 V and a maximum power density of approximately 4 μW cm-2 both fully competitive with reported values for related EBFCs, and with mechanical flexibility and facile enzyme immobilization as novel merits.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Pankratov, DmitryTechnical University of Denmark
(author)
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Halder, ArnabTechnical University of Denmark
(author)
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Xiao, XinxinTechnical University of Denmark
(author)
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Toscano, Miguel D.Novozymes A/S
(author)
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Zhang, JingdongTechnical University of Denmark
(author)
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Ulstrup, JensTechnical University of Denmark
(author)
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Gorton, LoLund University,Lunds universitet,Biokemi och Strukturbiologi,Centrum för Molekylär Proteinvetenskap,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biochemistry and Structural Biology,Center for Molecular Protein Science,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)akem-lgo
(author)
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Chi, QijinTechnical University of Denmark
(author)
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Technical University of DenmarkNovozymes A/S
(creator_code:org_t)
Related titles
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In:Nanoscale Advances: Royal Society of Chemistry (RSC)1:7, s. 2562-25702516-0230
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