Fuel battery and preparation method thereof

A fuel cell and fuel technology, used in fuel cells, fuel cell components, solid electrolyte fuel cells, etc., can solve the problems of fuel cell life impact, complex water management, and low reaction kinetics

Inactive Publication Date: 2014-10-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Fuel battery and preparation method thereof
  • Fuel battery and preparation method thereof
  • Fuel battery and preparation method thereof

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Experimental program
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Embodiment 1

[0031] I provided in this embodiment - / I 3 - Redox couple type cathode fuel cell single cell, its main feature is I - / I 3 - The redox couple molecules are used as the cathode reaction medium to replace the traditional oxygen as the direct electroreduction of the cathode reactant, and the recovery of the couple molecules relies on photocatalysis. see figure 1 , the single cell is composed of a catalytic layer, an ion exchange membrane 2, a flow field plate and a photocatalytic electrode 4, wherein: the cathode and anode catalysts are respectively coated on both sides of the ion exchange membrane 2 to form a cathode catalytic layer 3, an anode catalytic layer 1, and an anode The catalyst layer 1, the ion exchange membrane 2 and the cathode catalyst layer 3 constitute a membrane electrode. Then the membrane electrode is placed between the anode flow field and the cathode flow field, and the membrane electrode, the anode flow field and the cathode flow field are connected ...

Embodiment 2

[0033] The I provided by above-mentioned embodiment 1 - / I 3 - A redox couple type cathode fuel cell is prepared by the following method, the steps of which include:

[0034] 1. Preparation of Membrane Electrode:

[0035] Add 1g of Pt / C catalyst into 13ml of deionized water and stir vigorously, then add 6.7ml of Nafion solution into it, heat the resulting mixture for 30min, then perform sonication treatment, and homogenize the mixture for 1h to obtain a catalytic layer Homogenate, spray the obtained catalytic layer homogenate onto the PTFE film, dry at 60°C for 10min and then dry in N 2 Heat at 90° C. for 3 minutes under ambient conditions to form a catalytic layer, transfer the obtained catalytic layer to the ion exchange membrane 2 at 125° C. and 10 MPa, and press hot to obtain a membrane electrode.

[0036] 2. Single battery assembly:

[0037] The conductive end plate, flow field plate, gasket and membrane electrode are assembled into a single cell in sequence. The pu...

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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...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M4/90H01M8/02H01M8/0202H01M8/1004
CPCY02E60/521H01M4/8803H01M4/9083H01M8/1009Y02E60/50Y02P70/50
Inventor 王雅东黄世强涂文懋潘牧
Owner WUHAN UNIV OF TECH
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