High-temperature proton exchange membrane used for membrane fuel cells, and production method and application thereof

A proton exchange membrane and fuel cell technology, applied in fuel cells, sustainable manufacturing/processing, circuits, etc., can solve the problems of phosphoric acid with water, loss, etc., achieve strong water permeability, improve electrical conductivity, and high hydrophilicity Effect

Active Publication Date: 2018-03-23
WUHAN HYNERTECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

High-temperature proton exchange membrane fuel cells (HT-PEMFCs) refer to proton exchange membrane fuel cells with an operating temperature between 100°C and 200°C. Existing high-temperature proton exchange membranes based on phosphoric acid face problems such as serious loss of phosphoric acid with water.

Method used

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  • High-temperature proton exchange membrane used for membrane fuel cells, and production method and application thereof
  • High-temperature proton exchange membrane used for membrane fuel cells, and production method and application thereof
  • High-temperature proton exchange membrane used for membrane fuel cells, and production method and application thereof

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Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] A proton exchange membrane with high resistance alcohol performance, the film-forming raw materials are polyvinyl alcohol and phosphorylated chitosan, the mass ratio of polyvinyl alcohol and phosphorylated chitosan in the film-forming raw materials can ensure the conductivity of protons, and ensure the proton Under the condition of conductivity, the mass ratio of polyvinyl alcohol and phosphorylated chitosan can be adjusted.

[0024] The preparation method of polyvinyl alcohol / phosphorylated chitosan composite proton exchange membrane comprises the following steps:

[0025] (1) Preparation of phosphorylated chitosan;

[0026] In one embodiment, the preparation method of phosphonated chitosan is: take 2g of chitosan and dissolve it in a 250mL thre...

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Abstract

The invention discloses a polyvinyl alcohol-phosphorylated chitosan composite membrane used for high-temperature proton exchange membrane fuel cells, and also provides a production method and an application of the composite membrane. Raw materials for forming the proton exchange membrane comprise polyvinyl alcohol and phosphorylated chitosan. The PCS and the PVA are chemically cross-linked to produce the high-performance composite membrane, and the PVA has high hydrophilicity, strong water permeability and low alcohol exchangeability as a potential blend polymer, and can be used for improvingthe mechanical, chemical and electrochemical properties of the PCS proton exchange membrane, and the PCS and the PVA are chemically cross-linked through a cross-linking agent glutaraldehyde to make the hydroxyl and amino groups of the PVA and the hydroxyl group of the PCS form strong chemical bonds, so the electric conductivity and the mechanical performances of the composite membrane are furtherimproved.

Description

technical field [0001] The invention belongs to the technical field of proton exchange membrane fuel cells, and in particular relates to a high-temperature proton exchange membrane and its preparation method and application. Background technique [0002] Proton exchange membrane fuel cells (PEMFCs) are a device that directly converts the chemical energy of fuel into electrical energy. It has the characteristics of high energy conversion rate, low environmental pollution, and low noise. Proton exchange membrane is one of the core components of PEMFCs, which plays an important role in blocking positive and negative electrodes, transferring protons, and attaching electrocatalysts. High-temperature proton exchange membrane fuel cells (HT-PEMFCs) refer to proton exchange membrane fuel cells with an operating temperature between 100°C and 200°C. Existing high-temperature proton exchange membranes based on phosphoric acid face problems such as serious loss of phosphoric acid with w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/124
CPCH01M8/124Y02P70/50Y02E60/50
Inventor 程寒松张运丰董佳明
Owner WUHAN HYNERTECH CO LTD
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