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

94 Citations (Scopus)


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
Pages (from-to)2016-2022
Number of pages7
Issue number19-20
Publication statusPublished - 2006 Oct
Externally publishedYes


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

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry


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