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Multiwalled carbon nanotubes to improve ethanol/air biofuel cells

Fenga, P.G. ; Cardoso, F.P. ; Aquino Neto, S. ; De Andrade, A.R.

Electrochimica acta, 2013-09, Vol.106, p.109-113 [Periódico revisado por pares]

Elsevier Ltd

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  • Título:
    Multiwalled carbon nanotubes to improve ethanol/air biofuel cells
  • Autor: Fenga, P.G. ; Cardoso, F.P. ; Aquino Neto, S. ; De Andrade, A.R.
  • Assuntos: Alcohol dehydrogenase ; Bioanode ; Carbon ; Carbon nanotubes ; Dendrimers ; Density ; Enzymes ; Ethanol biofuel cell ; Ethyl alcohol ; Fuels ; Multi wall carbon nanotubes ; PAMAM ; Platforms
  • É parte de: Electrochimica acta, 2013-09, Vol.106, p.109-113
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: •The architecture of bioanodes layers makes a great difference in the wiring between de CNTs and the ADH enzyme.•MWCNTs enhance the activity of the enzymatic reaction between EtOH and the NAD+.•The anode configuration carbon cloth/poly-MG/PAMAM/MWCNTs/ADH is potentially applicable in miniaturized energy devices.•Power density and open circuit potential (OCP) of 0.278±0.038mWcm−2 and 0.459±0.025V were obtained for the best anode configuration investigated. Biofuel cells are important to generate alternative energy. This paper evaluates the electroactivity of a carbon cloth platform containing immobilized multiwalled carbon nanotubes (MWCNTs), a NAD+-dependent alcohol dehydrogenase enzyme (ADH), poly-methylene green (poly-MG), and an anchoring agent (PAMAM dendrimer, modified NAFION (m-NAFION), or polypyrrole (poly-Pyr)). The PAMAM dendrimer is an excellent medium to achieve ADH immobilization on the carbon nanostructured platform. We obtained power density and open circuit potential (OCP) of 0.278±0.038mWcm−2 and 0.459±0.025V, respectively, for PAMAM modified with MWCNTs. This new anode configuration is potentially applicable for small energy devices.
  • Editor: Elsevier Ltd
  • Idioma: Inglês
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