Metal/air battery-hydrogen oxygen fuel cell integration type combination power supply
A fuel cell and air battery technology, which is applied in the direction of fuel cell half-cells and primary battery-type half-cells, to reduce risks, ensure long-term stable work, and avoid electrode corrosion
Active Publication Date: 2015-07-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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[0010] Aiming at the problem of hydrogen evolution at the anode of the existing metal / air battery, the present invention proposes a method for reusing hydrogen evolution at the anode by using a hydrogen-oxygen fuel cell
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[0033] A magnesium / air battery-hydrogen fuel cell integrated combined power supply. Among them, the anode in the magnesium / air battery is AZ61 magnesium alloy; the cathode includes a catalytic layer, a hydrophobic diffusion layer and a current collector cathode, and the electrode area is 224cm 2 . The cathode catalytic layer uses carbon-supported manganese oxide as the catalyst, and the loading is 6 mg cm -2 , 20% of PTFE is a hydrophobic agent; the hydrophobic diffusion layer is a graphitized carbon fiber felt with a thickness of 3cm after the PTFE emulsion hydrophobic treatment; PTFE accounts for 40-85% of the total mass of the hydrophobic diffusion layer; the current collecting layer is foam Nickel, the entire magnesium-air battery module is composed of the same single battery as above in series, and the distance between the poles of the single battery is 3mm.
[0034] The hydrogen-oxygen fuel cell is a proton exchange membrane fuel cell, the anode and cathode catalysts a...
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Abstract
Provided is a metal / air battery-hydrogen oxygen fuel cell integration type combination power supply. The metal / air battery-hydrogen oxygen fuel cell integration type combination power supply comprises a metal / air battery module and a hydrogen oxygen fuel cell module, wherein the hydrogen oxygen fuel cell module is fixedly connected with the upper position of the metal / air battery module, and a hydrogen circulation opening is formed in a contact surface between the hydrogen oxygen fuel cell module and the top portion of the metal / air battery module; the hydrogen oxygen fuel cell module comprises a hydrophobic ventilating layer and membrane electrodes, the hydrophobic ventilating layer is attached to the positive electrode of the membrane electrodes; the positive electrode of the membrane electrodes is downward, and vertically arranged in the hydrogen oxygen fuel cell module, and the hydrogen circulation opening is communicated with the hydrophobic ventilating layer; and a hydrogen discharging opening which is vertically communicated with the hydrophobic ventilating layer is arranged on the top portion of the hydrogen oxygen fuel cell module. The metal / air battery-hydrogen oxygen fuel cell integration type combination power supply achieves recycle of the hydrogen in the metal / air battery, improves using efficiency of the hydrogen, lowers danger caused by accumulating the hydrogen, and improves current efficiency of the metal / air battery-hydrogen oxygen fuel cell integration type combination power supply simultaneously. In the meantime, the metal / air battery-hydrogen oxygen fuel cell integration type combination power supply has the advantages of being simple in structure, easy to achieve and the like.
Description
technical field [0001] The invention relates to a metal / air battery, in particular to a hydrogen evolution reuse technology for anodes of magnesium, aluminum, zinc and other metal / air batteries; [0002] The invention relates to the field of combined power sources of metal / air batteries and hydrogen-oxygen fuel cells. Background technique [0003] A metal / air battery is an electrochemical reaction device that uses metal (such as magnesium, aluminum, zinc, etc.) as the anode fuel, oxygen in the air as the oxidant, and lye or neutral brine as the electrolyte solution. my country's magnesium, aluminum, zinc and other metals are rich in reserves and low in price. Therefore, metal / air batteries have broad application prospects in many fields such as mobile power sources such as communication power sources, field emergency power sources, lighting power sources, and reserve power sources. Metal / air batteries have the characteristics of high energy density, no pollution of reactant...
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IPC IPC(8): H01M12/06
Inventor 孙公权王二东
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI