Patent ID: 8852765
Filing Date: 2014-10-07
Classification: C12N,C12P,H01M,Y02E

Abstract:
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 spontaneously formed in a solution containing conductive fine particles and microorganisms with an extracellular electron transfer capability, said 3-dimensionally structured agglomerates being formed from said conductive fine particles and microorganisms by allowing said microorganisms to specifically adsorb said conductive fine particles; and said microorganisms are held by said conductive fine particles over a range of zone extending vertically away from a surface of said negative electrode, in a manner such that said conductive fine particles are distributed among said microorganisms; and said conductive fine particles comprise α-Fe 2 O 3 , α-FeOOH, γ-Fe 2 O 3 , ε-Fe 2 O 3 or Fe 3 O 4 or ferric sulfide, and then said conductive fine particles transfer electrons from said microorganisms to said negative electrode.