Automatic, sequential power generation for prolonging the net lifetime of a miniature biofuel cell stack

Takeo Miyake, Masato Oike, Syuhei Yoshino, Yohei Yatagawa, Keigo Haneda, Matsuhiko Nishizawa

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A sequential power generation system for prolonging the net lifetime of a miniature biofuel cell stack has been developed. The system consists of layered chambers of enzyme fuel cells designed to be exposed sequentially to fuel solution by automatically switched fuel flow. The cell chambers were initially separated by magnetized plastic covers sealed with a degradable glue, poly(lactic-co-glycolic acid) (PLGA). The time that the cover was opened by attraction with an external magnet, thereby activating the following cell, was adjustable from a few hours to a few weeks by controlling the weight ratio of Fe3O4 in the covers and the molecular weight of PLGA. By using sequential power generation in this way, the power output of the system was stable for longer periods, and therefore the net lifetime of the stack has been extended as compared with that of a single biofuel cell.

Original languageEnglish
Pages (from-to)2574-2578
Number of pages5
JournalLab on a Chip
Volume10
Issue number19
DOIs
Publication statusPublished - 2010 Oct 7

ASJC Scopus subject areas

  • Bioengineering
  • Biochemistry
  • Chemistry(all)
  • Biomedical Engineering

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