Thermal battery-electrolytic tank coupling hydrogen production system

Abstract

The invention provides a thermal battery-electrolytic tank coupled hydrogen production system, which is characterized in that an electrolytic tank is filled with electrolyte, and a hydrogen evolution cathode, a thermal chemical battery anode, a thermal chemical battery cathode and an oxygen evolution anode are sequentially arranged in the electrolytic tank; the hydrogen evolution cathode and the thermochemical battery anode as well as the thermochemical battery cathode and the oxygen evolution anode are respectively separated by an exchange membrane; when hydrogen evolution and oxygen evolution are independently operated, the hydrogen evolution cathode and the anode of the thermochemical battery as well as the oxygen evolution anode and the cathode of the thermochemical battery are respectively connected to an external circuit through a lead; when hydrogen evolution and oxygen evolution need to be carried out at the same time, the thermochemical battery anode and the thermochemical battery cathode are directly connected through a wire, and the hydrogen evolution cathode and the oxygen evolution anode are connected with a power source through wires. The thermal chemical battery is mounted in the middle of the electrolytic tank, and the transition metal redox couple is used as a mediator, so that the cathode and the anode of the electrolytic tank are decoupled, and the correlation limitation between the cathode and the anode and the mixing of hydrogen and oxygen are relieved.

Description

Technical field [0001] The present invention provides a thermal cell-electrolytic cell coupling hydrogen system, which belongs to the technical field of electrolytic water hydrogen. Background technique [0002] Electrolytic water hydrogen is a renewable energy technique that converts water into oxygen and hydrogen by hydrogenation and oxygen reacting reactive energy. In practical applications, an ion exchange membrane or a porous film is usually separated, so that the hydrogenation and oxygen reactions are performed in the cathode and anode chamber, respectively. Due to inconsistencies of the cathode and anode electrode reaction, the oxygenation of the anode tends to be a limiting factor in hydropower solution. Further, since the ion exchange membrane or the porous film has a certain permeability, the resulting hydrogen or oxygen will span the exchange membrane, produce hydrogen and oxygen mixing; and due to the different rate of molar gas generation, it is necessary to strictly...

AI Technical Summary

Problems solved by technology

At present, one of the solutions to the above problems is to use redox mediators to decouple the anode and cathode reactions. On the one hand, avoid the mixing of hydrogen and oxygen, and at the same time solve the limitation of the anode oxygen evolution reaction kinetics on the cathode hydrogen evolution reaction. However, the above system uses The solid or liquid redox mediator will generate additional redox overpotential, which will reduce the system efficiency

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