Fuel battery and preparation method thereof

Abstract

The invention provides a fuel battery. The fuel battery is characterized in that I- / I3-oxidation and reduction coupled molecules are as a cathode reaction medium to replace the traditional mode of direct electric reduction using oxygen as a cathode substance, and the coupled molecules are restored by means of the action of photocatalysis so as to form the I- / I3-oxidation and reduction coupled cathode fuel single battery. The invention also provides a preparation method of the fuel battery. The preparation method comprises the steps of preparing a membrane electrode and assembling the membrane electrode. The fuel battery and the preparation method have the advantages that the cathode function of the fuel battery is realized by utilizing the reverse circulation of the coupled molecules under the action of photocatalysis, so that a proton-exchange-membrane fuel battery with low consumption and high efficiency is formed; the mode using the coupled molecules as the cathode replaces the traditional mode of direct electric oxidation of oxygen, and the use of a noble-metal catalyst can be reduced or abandoned on the premise of guaranteeing high-performance output; a liquid cathode is adopted as a reactant, so that the design, control and operating management of the fuel battery can be simplified; the coupled molecules are restored by means of photocatalysis, so as to be beneficial for further improvement of the reaction kinetics.

Description

technical field [0001] The present invention relates to a fuel cell, in particular to a fuel cell by using I - / I 3 - Redox couples as fuel cell cathodes as a means to improve fuel cell performance. Background technique [0002] As a future clean vehicle energy system, proton membrane fuel cell (PEMFC) is used to replace the low-efficiency and high-emission traditional internal combustion engine. It is regarded as one of the key technologies for establishing a new energy economy. After years of basic research and application development, substantial progress has been made in the use of proton exchange membrane fuel cells as vehicle power. The miniature proton exchange membrane fuel cell portable power supply and the small proton exchange membrane fuel cell mobile power supply have reached the level of commercialization. , Research on high-power proton exchange membrane fuel cell power generation system has also achieved certain results. [0003] However, as an energy con...

AI Technical Summary

Problems solved by technology

The water management system also leads to a more complex fuel cell system

In order to deal with the problems of low oxygen reduction reaction kinetics and complex water management in fuel cells, people have also proposed the idea of ​​developing high-temperature proton exchange membrane fuel cells

By carrying out the reaction at a higher temperature, on the one hand, the reaction kinetics of oxygen can be improved, and on the other hand, the reaction product generated by the cathode is gaseous water, which reduces the difficulty of water management. Although theoretically, high-temperature fuel cells can Reduce the complexity of the fuel cell system. However, since the fuel cell operates at high temperature, the Nafion membrane currently widely used will no longer be used, and a new type of high-temperature membrane needs to be developed, and the life of the fuel cell is also greatly impacted.

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