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A microbial fuel cell (MFC), or biological fuel cell, is a bio-electrochemical system that drives an electric current by using bacteria and mimicking bacterial interactions found in nature. MFCs can be grouped into two general categories: mediated and unmediated. The first MFCs, demonstrated in the early 20th century, used a mediator: a chemical that transfers electrons from the bacteria in the cell to the anode. Unmediated MFCs emerged in the 1970s; in this type of MFC the bacteria typically have electrochemically active redox proteins such as cytochromes on their outer membrane that can transfer electrons directly to the anode. In the 21st century MFCs started to find a commercial use in wastewater treatment.

Process and corresponding apparatus for continuously producing gaseous hydrogen to be supplied to micro fuel cells and integrated system for producing electric energy

ActiveUS20080085433A1Reduce stepsHydrogenPhysical/chemical process catalystsCobaltMetallic Nickel

A process for the production of hydrogen for micro fuel cells, comprises the successive steps of: continuously supplying a catalytic bed with an aqueous solution of sodium borohydride, the catalytic bed being made of at least one metal chosen among cobalt, nickel, platinum, ruthenium with obtainment of hydrogen and of a by-product comprising sodium metaborate, continuously recovering the hydrogen thus obtained and supplying, with said hydrogen as it is as obtained, a micro fuel cell which transforms hydrogen into electric energy. An apparatus provides continuous supply of hydrogen to a micro fuel cell. An integrated system structured for continuously producing and supplying hydrogen to a micro fuel cell and for converting the continuously supplied hydrogen into electric energy.

Owner:STMICROELECTRONICS SRL

Composite cathode of microbial fuel cell and preparation method and application thereof

PendingCN107221682AWide variety of sourcesLow priceHybrid capacitor electrodesBiochemical fuel cellsOxide compositeAlloy

The invention discloses a composite cathode of a microbial fuel cell and a preparation method thereof. The composite cathode in turn comprises a catalytic layer, a carbon cloth layer, a carbon base layer and a diffusion layer from one side to the other side; and the material of the catalytic layer is a mixture of a graphene oxide / magnesium oxide composite material, activated carbon and perfluorinated sulfonic acid. The composite cathode of the microbial fuel cell is prepared from the magnesium oxide / graphene oxide composite material. Compared with noble metal platinum and alloy materials thereof, the raw materials of the composite cathode of the microbial fuel cell are wide in source and low in price, and the prepared composite cathode has a large surface area, excellent conductivity and stable electronic migration, can be used in microbial fuel cells, has low cost, stable operation and high output power, and can be widely used in the microbial fuel cells, lithium batteries or super capacitors.

Composite cathode of microbial fuel cell and preparation method and application thereof

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Owner:SOUTH CHINA UNIV OF TECH +1

2 results about "Microbial fuel cell" patented technology

Process and corresponding apparatus for continuously producing gaseous hydrogen to be supplied to micro fuel cells and integrated system for producing electric energy

Composite cathode of microbial fuel cell and preparation method and application thereof

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