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Microbial fuel cell

外国特許コード F110003961
整理番号 E08901WO
掲載日 2011年7月7日
出願国 欧州特許庁(EPO)
出願番号 09724654
公報番号 2270915
公報番号 2270915
出願日 平成21年3月27日(2009.3.27)
公報発行日 平成23年1月5日(2011.1.5)
公報発行日 平成29年5月3日(2017.5.3)
国際出願番号 JP2009056385
国際公開番号 WO2009119846
国際出願日 平成21年3月27日(2009.3.27)
国際公開日 平成21年10月1日(2009.10.1)
優先権データ
  • 特願2008-086195 (2008.3.28) JP
  • 特願2008-249178 (2008.9.26) JP
  • 2009WO-JP56385 (2009.3.27) WO
発明の名称 (英語) Microbial fuel cell
発明の概要(英語) (EP2270915)
It is an object of the present invention to provide a microbial fuel cell capable of increasing a current density without employing a mediator.
The microbial fuel cell 1 includes a 3-dimensionally structured agglomerate formed from conductive fine particles 2 and microorganisms 3.
In the agglomerate 4, the conductive fine particles 2 disperse among pieces of Shewanella 3 and the conductive fine particles 2 are coupled to one another to hold Shewanella 3, thus forming the 3-dimensional structure as a whole.
Accordingly, with respect to Shewanella 3, conductive fine particles 2 hold Shewanella 3a on a surface of an electrode 103 and even Shewanella 3b positioned vertically away from the surface of the electrode 103.
Hence, it becomes possible that more pieces of Shewanella 3 are allowed to transfer electrons.
特許請求の範囲(英語) [claim1]
1. A microbial fuel cell equipped with a pair of electrodes and an external circuit electrically connecting a pair of said electrodes, wherein on a negative electrode that is one of said electrodes, 3-dimensionally structured agglomerates are formed in a solution containing conductive fine particles and microorganisms with an extracellular electron transfer capability and then said conductive fine particles transfer electrons from said microorganisms to said negative electrode.
[claim2]
2. The microbial fuel cell according to claim 1, wherein said conductive fine particles disperse among said microorganisms and further said conductive fine particles are coupled to one another to hold said microorganisms.
[claim3]
3. The microbial fuel cell according to claim 1 or claim 2, wherein said conductive fine particles include ferric oxide.
[claim4]
4. The microbial fuel cell according to claim 3, wherein said conductive fine particles include alpha -Fe 2O 3, alpha -FeOOH, gamma -Fe 2O 3, epsilon -Fe 2O 3 or Fe 3O 4.
[claim5]
5. The microbial fuel cell according to claim 1 or claim 2, wherein said conductive fine particles include ferric sulfide.
[claim6]
6. The microbial fuel cell according to claim 5, wherein said conductive fine particles are obtained by biosynthesis of microorganisms in an environment where ferric ions and sulfide ions coexist.
[claim7]
7. The microbial fuel cell according to claim 1 or claim 2, wherein said conductive fine particles include manganese oxide.
[claim8]
8. The microbial fuel cell according to any of claims 1 to 7, wherein said microorganisms are metal-reducing bacteria.
[claim9]
9. The microbial fuel cell according to claim 8, wherein said metal-reducing bacteria include bacteria of a Shewanella group, a Geobacter group, a Rhodoferax group or a Pseudomonas group.
[claim10]
10. The microbial fuel cell according to claim 8, wherein said metal-reducing bacteria contain Shewanella loihica or Shewanella oneidensis.
  • 出願人(英語)
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • HASHIMOTO KAZUHITO
  • NAKAMURA RYUHEI
  • KAI FUMIYOSHI
  • WATANABE KAZUYA
  • KATO SOICHIRO
国際特許分類(IPC)
欧州特許分類/主・副
  • C12N001/20
  • C12P001/04
  • C12P003/00
  • H01M004/86B
  • H01M004/86M3
  • H01M004/90
  • H01M008/16
  • Y02E060/52H
指定国 (EP2270915)
Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
参考情報 (研究プロジェクト等) ERATO HASHIMOTO Light Energy Conversion AREA
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