High-performance enzymatic biofuel cell based on three-dimensional graphene

Arman Amani Babadi, Wan Abd Al Qadr Imad Wan-Mohtar, Jo Shu Chang, Zul Ilham, Adi Ainurzaman Jamaludin, Golnoush Zamiri, Omid Akbarzadeh, Wan Jefrey Basirun

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Enzymatic biofuel cells are a subclass of biofuel cells, which employ enzymes to generate energy from renewable sources. In this study, 3-dimensional graphene (3DG)/glucose oxidase (GOx) bio-nanocomposite was fabricated in order to improve enzyme immobilisation and enzyme lifetime with an enhanced electron transfer rate. These enhancements are due to the unique physical properties of 3DG, e.g. high porosity, large surface area, and excellent electrical conductivity. A power density of 164 μW cm−2 at 0.4 V was achieved from this enzymatic biofuel cell (EBFC) with an acceptable performance compared to that of the other glucose biofuel cells (GBFCs). The 3DG enhances the enzyme lifetime, decreases enzyme leaking and, due to its good conductivity, facilitates the electron harvest and transfer from the enzyme active site to the electrode. This suggests that 3DG could be used as effective support for enzyme immobilisation on the surface of the electrode in EBFC applications and related areas such as biosensors, bioreactors and implantable biofuel cells.

Original languageEnglish
Pages (from-to)30367-30374
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number57
DOIs
Publication statusPublished - 2019 Nov 15

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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