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Fuel cell anode regulating and controlling method

A fuel cell and anode technology, which is applied in the field of fuel cell anode regulation, can solve the problems of low utilization rate of fuel cell anode, hinder fuel cell, difficult gas emission, etc., so as to increase the effective reaction area, increase the discharge capacity, and improve the utilization rate. rate effect

Active Publication Date: 2020-02-11
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of existing fuel cells, such as the difficulty of gas emission generated by the anode, the formation of a gas barrier layer that hinders the movement of charged particles in the fuel cell, potential safety hazards, and the low utilization rate of the anode of the fuel cell, the present invention provides a fuel cell Anode regulation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Under the condition of ambient temperature 20±1°C, nickel foam sheet (PPI is 100, thickness 1.5mm, width 1.5cm, length 2.5cm) is used as working electrode, graphite electrode is used as counter electrode, and the distance between nickel foam sheet and graphite is 200mm , taking the calomel electrode as the reference electrode, and using methanol / potassium hydroxide solution as the electrolyte (concentrations of methanol and potassium hydroxide are both 1M), to build a fuel cell electrochemical system for conventional experiments, and to foam nickel sheet (surface 5mm within the range) to apply a boosting magnetic field. The promoting magnetic field is provided by a strong permanent magnet, and the source magnetic field generated by the strong permanent magnet acts on the nickel foam sheet to form a promoting magnetic field with a strength of 1.5-1.7T.

[0039] The reaction current of the methanol fuel cell system was detected by CHI760E electrochemical workstation. The ...

Embodiment 2

[0041]Concrete process is identical with embodiment 1, and difference is, promotes that magnetic field is formed by the combination of an AC electromagnet and a DC electromagnet, is a complex source magnetic field, and its effect on the magnetic field strength of the promoted magnetic field that forms within the scope of 5mm of nickel foam sheet surface is: 2.1~2.8T.

[0042] The reaction current of the methanol fuel cell system is also detected by CHI760E electrochemical workstation. The detection process starts with a voltage of 0V, terminates with a voltage of 1.2V, and scans at a speed of 0.1V / s. After testing, its peak current density at the end voltage is 247mA / cm 2 , and produced a distinct redox peak.

Embodiment 3

[0044] The specific steps are the same as in Example 1, except that the promotion magnetic field is provided by a constant magnetic field produced by a DC electromagnet, and the magnetic field strength of the promotion magnetic field formed within the 5mm range of the foamed nickel sheet surface is 1.4~1.6T.

[0045] The reaction current of the methanol fuel cell system is also detected by CHI760E electrochemical workstation. The detection process starts with a voltage of 0V, terminates with a voltage of 1.2V, and scans at a speed of 0.1V / s. After testing, its peak current density at the end voltage is 207mA / cm 2 , and produced a distinct redox peak.

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Abstract

The invention relates to the field of fuel cells, and in particular relates to a fuel cell anode regulating and controlling method. The method comprises the steps that a promotion magnetic field is applied to the anode of a fuel cell; the promotion magnetic field has an effect on charged particles on the anode surface; and the charged particles disturbing the anode surface agitate an electrolyte on the anode surface, so that the charged particles are uniformly reacted on the anode surface, and gas precipitated from the anode is discharged. According to the invention, the promotion magnetic field is applied to regulate and control the anode, which can disturb the movement of the charged particles on the anode surface, and then disturbs the electrolyte; the uniformity of components in the electrolyte is improved; by stirring the electrolyte on the anode surface, the problem that bubbles precipitated from the anode surface are enriched continuously to form a gas barrier layer is solved;the utilization rate of the anode of the fuel cell is effectively improved, and the effective reaction area thereof is increased; the discharge amount of the cell is increased; and the efficiency of the fuel cell is improved.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a regulation method for fuel cell anodes. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into a computer, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Since the fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high. In addition, fuel cells use fuel and oxygen as raw materials, and there are no mechanical transmission parts, so there is no noise pollution. Very little harmful gas is emitted. It can be seen that from the point of view of saving energy and protecting the ecological environment, fuel cells are the most promising power generation technology. [0003] However, ex...

Claims

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Application Information

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IPC IPC(8): H01M8/008H01M8/04276H01M8/04298
CPCH01M8/008H01M8/04276H01M8/04298H01M2004/8684Y02E60/50Y02W30/84
Inventor 唐谊平侯广亚
Owner ZHEJIANG UNIV OF TECH
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