Rapid activation method of proton exchange membrane fuel cell

A proton exchange membrane, fuel cell technology, applied in fuel cells, battery electrodes, electrochemical generators, etc., can solve the problems of poor effect, speed up the reaction speed and long time on both sides of the cathode and anode, save activation cost, Shortened activation time and enhanced hydrophilicity

Active Publication Date: 2022-08-02
先进储能材料国家工程研究中心有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The newly made battery needs to be activated before it can be used normally. Activation can increase the activity of the catalyst in the MEA (proton exchange membrane fuel cell) and speed up the reaction speed on both sides of the cathode and anode. Conventional fuel cell activation usually takes more than 4 hours, which takes a long time and the effect is not good

Method used

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  • Rapid activation method of proton exchange membrane fuel cell
  • Rapid activation method of proton exchange membrane fuel cell
  • Rapid activation method of proton exchange membrane fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A rapid activation method of proton exchange membrane fuel cell, 5 × 5 cm 2 The newly prepared CCM film is placed in a plasma treatment device and treated according to the prior art plasma surface treatment process. The plasma treatment device is filled with argon gas, and the flow rate of argon gas is 15ml / s. The power of the plasma treatment device is 100W, The vacuum degree is 50Pa, the temperature is 40℃, and the plasma surface treatment time is 2min; after that, the treated CCM membrane is made into a proton exchange membrane fuel cell according to the existing process, and the proton exchange membrane fuel cell is connected to the battery tester. Press the following Steps to activate:

[0019] (a) First, set the battery operating temperature to 45°C, humidify, and use the metering ratio mode for the supply of reaction gas. According to hydrogen: 1.5, air: 2.5, the initial value of the output current is set to 2.5A, and the battery operating temperature is graduall...

Embodiment 2

[0030] A rapid activation method of proton exchange membrane fuel cell, 4 × 4 cm 2 The newly prepared CCM film is placed in a plasma treatment device and treated according to the prior art plasma surface treatment process. The plasma treatment device is filled with argon gas, the flow rate of argon gas is 10ml / s, and the power of the plasma treatment device is 100W, The vacuum degree is 50Pa, the temperature is 40℃, and the plasma surface treatment time is 5min; then the treated CCM membrane is made into a proton exchange membrane fuel cell according to the existing process, and the proton exchange membrane fuel cell is connected to the battery tester. Press the following Steps to activate:

[0031] (a) First, set the battery working temperature to 40°C, humidify, use the fixed value mode for the supply of reaction gas, hydrogen is 500mL / min, air is 1500mL / min, the initial value of the output current is set to 1A, and the battery working temperature is gradually increased. Hi...

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Abstract

The invention provides a rapid activation method for a proton exchange membrane fuel cell. The newly prepared CCM membrane is subjected to plasma surface treatment, and then it is made into a proton exchange membrane fuel cell, and the activation is carried out according to the following steps: Gradually increase and forcefully increase the output current in stages until the battery operating temperature reaches 70 to 80°C and the output voltage drops to 0.4 to 0.5V; (b) Fix the battery operating temperature at 70 to 80°C, and gradually force it in stages Increase the output current until the output voltage drops to 0.4~0.5V, and cycle 1~4 times; (c) Fix the working temperature of the battery at 70~80℃, first press 50~200mA / cm 2 the smaller output current, then press 800~1200mA / cm 2 The larger output current, cycle 2 to 8 times. The method of the invention is simple in process, can shorten the activation time of the battery, and improve the production efficiency.

Description

technical field [0001] The invention relates to a rapid activation method for a proton exchange membrane fuel cell. Background technique [0002] Fuel cell is an efficient and clean new energy utilization technology. The newly made battery needs to be activated before it can be used normally. Activation can improve the catalyst activity in the MEA (proton exchange membrane fuel cell) and speed up the reaction speed on both sides of the cathode and anode. Conventional fuel cell activation usually takes more than 4 hours, which is a long time. and ineffective. The purpose of fuel cell activation mainly includes: ① structure optimization of the newly prepared CCM surface, improve CCM wettability, and optimize water condition; ② hydrate the electrode and the diffusion layer through battery discharge, reduce the internal resistance of the membrane electrode, especially Ohmic internal resistance; ③The activation process is also the establishment process of the channels of gas, p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04223H01M4/88
CPCH01M8/04223H01M4/8878Y02P70/50
Inventor 钟发平贺凤倪江鹏杨涵邓宇飞尹涛
Owner 先进储能材料国家工程研究中心有限责任公司
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