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Method and device for activating proton exchange membrane fuel cell

A proton exchange membrane, fuel cell technology, applied in the direction of fuel cell additives, etc., can solve problems such as poor activation effect, and achieve the effect of improving activation rate and better activation effect

Active Publication Date: 2011-06-15
内蒙古快为科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the embodiments of the present invention is to provide a proton exchange membrane fuel cell activation method and device to solve the problem of poor activation effect of existing proton exchange membrane fuel cells

Method used

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  • Method and device for activating proton exchange membrane fuel cell
  • Method and device for activating proton exchange membrane fuel cell
  • Method and device for activating proton exchange membrane fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a method for activating a proton exchange membrane fuel cell, such as Figure 7 shown, including:

[0058] S101, continuously feeding deionized water into the gas channel of the proton exchange membrane fuel cell;

[0059] S102. After the deionized water is stopped and the deionized water is removed, adjust the stack fixture of the battery according to the preset rules, so that the force of each screw of the battery is equal to the preset pressure value and the error of the effective length is not greater than preset deviation;

[0060] S103. Continuously feed the corresponding reaction gas into the gas channel, and at the same time adjust the load to prompt the battery to output current according to a preset step gradient until the output voltage of the battery reaches a preset voltage.

[0061] In the method of this embodiment, by introducing deionized water into the gas channel, the membrane electrode is fully wetted, water channels and pro...

Embodiment 2

[0063] This embodiment provides a method for activating a proton exchange membrane fuel cell, such as Figure 8 shown, including:

[0064] S201, purging the gas channel of the battery.

[0065] In the membrane electrode manufacturing process, there is inevitably dust (including carbon powder, catalyst particles, atmospheric dust, etc.) Risk of contaminating the catalyst and hindering the establishment of the pentachannel.

[0066] After the stack is integrated, first use dry inert gas to purge and clean the gas channel of the battery. The inert gas may be nitrogen, argon or the like.

[0067] For a battery with a closed cathode flow channel, step S201 may specifically be: simultaneously purging the gas flow channel in a pulsed manner with an inert gas. During the purging process, the pressure on both sides of the membrane electrode is always equal, and the purging pressure is continuously pulsed, such as 0.3MPa-0.2MPa-0.1MPa-0.2MPa-0.3MPa, and the pressure fluctuation rang...

Embodiment 3

[0110] Embodiments of the present invention also provide an activation device for a proton exchange membrane fuel cell, such as Figure 12 As shown, the device includes:

[0111] The water circulation module 10 is used to continuously feed deionized water into the gas channel of the proton exchange membrane fuel cell;

[0112] The pressure adjustment module 20 is used to adjust the cell stack fixture of the battery according to preset rules after the deionized water is stopped and the deionized water is removed, so that the force of each screw of the battery is equal to the preset pressure value and The effective length error is not greater than the preset deviation;

[0113] A gas supply module 30, configured to continuously feed the corresponding reaction gas into the gas flow channel after the pressure adjustment module 20 adjusts the stack fixture;

[0114] The current adjustment module 40 is configured to adjust the load to prompt the battery to output current according...

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Abstract

The embodiment of the invention discloses a method and device for activating a proton exchange membrane fuel cell. The method comprises the following steps of: continuously adding deionized water to a gas channel of the proton exchange membrane fuel cell; adjusting a galvanic pile clamp of the cell according to a preset rule after stopping adding deionized water and removing the deionized water; continuously pumping corresponding reaction gases to the gas channel and adjusting a load so that a current is output according to a preset step gradient until the output voltage of the cell reaches apreset voltage; fully moisturizing a membrane electrode by continuously adding deionized water to the gas channel; decreasing ohmic polarization and concentration polarization to acquire an optimal range between the ohmic polarization and the concentration polarization by adjusting the galvanic pile clamp; and outputting the current by the cell according to the preset step gradient by adjusting the load after pumping the reaction gases so that the transmission channels of water, heat, electrons, protons and gases are internally adjusted, more catalysts become effective reaction points, and the activation effect is better.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an activation method and device for a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is an energy conversion device that can electrochemically convert the chemical energy stored in fuel and oxidant into DC power in one step. It is similar in principle to the storage battery, and realizes the migration of electrons through the external circuit at the cathode and anode through the electrochemical oxidation-reduction reaction. But similar in form to diesel generators, it needs to continuously supply fuel and air, discharge waste gas and waste water, and output electric energy. Its electrode reaction is as follows: [0003] Anode reaction 2H 2 →4H + +4e - [0004] Cathodic reaction 4H + +O 2 +4e - →2H 2 o [0005] Battery reaction 2H 2 +O 2 =2H 2 O+Q [0006] Among them, the electrolyte of the proton exchange membrane fuel cell (PEMFC)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04
CPCY02E60/50
Inventor 王兴杰梁恩志蔡腾宇李彦舟吴海军
Owner 内蒙古快为科技有限公司
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