Miniature biofuel cells with improved stability under continuous operation

Michael B. Fischback, Kyu Youn Jong, Xueyan Zhao, Ping Wang, Gyu Park Hyun, Nam Chang Ho, Jungbae Kim, Su Ha

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

We have developed miniature biofuel cells (BFCs) with dimensions as small as 12 x 12 x 9 mm by adopting the design of stackable proton exchange membrane (PEM) fuel cells. The enzymatic anodes were constructed by using stabilized glucose oxidase (GOx) in the form of crosslinked enzyme clusters (CECs) on the surface of carbon nanotubes (CNTs). The combination of stabilized GOx and unbuffered fuel solution resulted in stabilized performance of miniature BFCs under continuous operation for more than 16 hours. This unprecedentedly high operational stability of miniature BFCs opens up new possibilities for many BFC applications.

Original languageEnglish (US)
Pages (from-to)2016-2022
Number of pages7
JournalElectroanalysis
Volume18
Issue number19-20
DOIs
StatePublished - Oct 2006

Keywords

  • Biofuel cells
  • Buffer
  • Carbon nanotubes
  • Crosslinked enzyme clusters
  • Enzyme stabilization

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