A rapid activation method for phosphoric acid-doped polybenzimidazole high-temperature membrane fuel cell membrane electrodes

A technology of polybenzimidazole and fuel cell membrane, which is applied in the field of fuel cells, can solve the problems of low activation efficiency and long activation time, and achieve the effects of improving work efficiency, accelerating stability, and shortening completion time
CN109950581BActive Publication Date: 2021-11-05江苏乾景新能源产业技术研究院有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江苏乾景新能源产业技术研究院有限公司
Publication Date
2021-11-05

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Abstract

The invention discloses a method for quickly activating a membrane electrode of a phosphoric acid-doped polybenzimidazole high-temperature membrane fuel cell, which belongs to the technical field of fuel cells. During the activation process, when the battery is heated from room temperature to 120 ° C, the electrochemical workstation is used to perform cyclic voltammetry scanning; the use of cyclic voltammetry scanning can accelerate the redistribution of phosphoric acid in the membrane electrode in the early stage of activation, and can be cleaned Impurities are attached to the surface of the electrode catalyst, so that the catalytic layer exposes more active surfaces. The invention can effectively shorten the time required for activation, and the whole activation process only needs 4-5 hours, thereby providing a new method for the activation of high-temperature membrane fuel cells.
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Description

technical field

[0001] The invention belongs to the technical field of fuel cells, and in particular relates to a rapid activation method for phosphoric acid-doped polybenzimidazole high-temperature membrane fuel cells. Background technique

[0002] In recent years, in order to solve the problems of low catalyst activity, low carbon monoxide poisoning resistance, and complicated water management process in low-temperature polyelectrolyte membrane fuel cells (PEMFC), relevant researchers have proposed phosphoric acid doped with operating temperatures in the range of 120-200 °C. Heteropolybenzimidazole high-temperature membrane fuel cells (HT-PEMFC) try to solve the above problems faced by low-temperature PEMFC by increasing the operating temperature of the fuel cell, thereby further improving the performance of PEMFC and reducing the cost of PEMFC preparation and operation.

[0003] In order to achieve the best working efficiency, the assembled proton exchange membrane fuel c...

Claims

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