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Proton exchange membrane applied to fuel cell and preparation method of proton exchange membrane

A proton exchange membrane, fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as performance that has not yet been reported, and achieve the effects of good transmission pathways, high proton conductivity, and good water retention performance.

Inactive Publication Date: 2021-07-30
深圳氢时代新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis and performance of SPES / amine-functionalized cobalt titanate (ACT) composite membranes for proton exchange membrane fuel cell electrolytes have not been reported yet.

Method used

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  • Proton exchange membrane applied to fuel cell and preparation method of proton exchange membrane
  • Proton exchange membrane applied to fuel cell and preparation method of proton exchange membrane
  • Proton exchange membrane applied to fuel cell and preparation method of proton exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] MsACT 0.5 Preparation of:

[0038] refer to figure 1 , the mixed solution of SPES and ACT nanoparticles was prepared into a SPES / ACT composite film by solution casting method, in which the SPES film was prepared as a reference, and the prepared films were named Ms and MsACTx respectively, where x represents ACT nanoparticles in nano % by weight in the composite film.

[0039] Stirring at room temperature, 0.995g of SPES was dissolved in 2.5mL of DMAc to obtain a SPES suspension, 0.005g of ACT nanoparticles (0.5wt.%) was ultrasonically dispersed in 2.5ml of DMAc, and then added to the SPES suspension The liquid was stirred at room temperature for 30 minutes to obtain a uniform low-viscosity liquid; the obtained low-viscosity liquid was directly cast on a glass plate at a constant speed with a doctor blade, dried at room temperature for 24 hours, and then dried overnight at 70°C; the prepared Before the membrane is used, it needs to be soaked in 2mol sulfuric acid solu...

Embodiment 2

[0041] MsACT 1 Preparation of:

[0042] refer to figure 1 , the mixed solution of SPES and ACT nanoparticles was prepared into a SPES / ACT composite film by solution casting method, in which the SPES film was prepared as a reference, and the prepared films were named MS and MsACTx, where x represents ACT nanoparticles in nano % by weight in the composite film.

[0043] Stirring at room temperature, 0.99g of SPES was dissolved in 2.5mL of DMAc to obtain a SPES suspension, 0.01g of ACT nanoparticles (1.0wt.%) was ultrasonically dispersed in 2.5ml of DMAc, and then added to the SPES suspension solution, stirred at room temperature for 30 minutes to obtain a uniform low-viscosity liquid; the obtained low-viscosity liquid was directly cast on a glass plate at a constant speed with a doctor blade, dried at room temperature for 24 hours, and then dried overnight at 70°C. Before the membrane is used, it needs to be soaked in 2mol sulfuric acid solution for 24h for pretreatment.

Embodiment 3

[0045] MsACT 2 Preparation of:

[0046] refer to figure 1 , the mixed solution of SPES and ACT nanoparticles was prepared into a SPES / ACT composite film by solution casting method, in which the SPES film was prepared as a reference, and the prepared films were named MS and MsACTx, where x represents ACT nanoparticles in nano % by weight in the composite film.

[0047] Stirring at room temperature, 0.98g of SPES was dissolved in 2.5mL of DMAc to obtain a SPES suspension, 0.02g of ACT nanoparticles (2.0wt.%) was ultrasonically dispersed in 2.5ml of DMAc, and then added to the SPES suspension solution, stirred at room temperature for 30 minutes to obtain a uniform low-viscosity liquid, which was directly cast on a glass plate at a constant speed with a doctor blade, dried at room temperature for 24 hours, and then dried overnight at 70°C. Before the membrane is used, it needs to be soaked in 2mol sulfuric acid solution for 24h for pretreatment.

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Abstract

The invention discloses a proton exchange membrane applied to a fuel cell and a preparation method of the proton exchange membrane. The proton exchange membrane is prepared from the following raw materials: 0.005 g-0. 03g of functionalized cobalt titanate nano particles and 0.97 g-0.995 g of sulfonated polyethersulfone. The novel proton exchange membrane is prepared by combining amine functionalized cobalt titanate nanoparticles with a sulfonated polyethersulfone polymer matrix; surface modification is carried out on cobalt titanate nano particles by adopting grafted (3-aminopropyl)triethoxysilane; the interfacial compatibility of the ACT nano particles subjected to surface modification and the SPES is improved, so that the ACT nano particles can be uniformly dispersed in the SPES film; the prepared nano composite film is characterized by adopting technologies such as Fourier transform infrared spectroscopy, thermogravimetric analysis, a universal testing machine, a field emission scanning electron microscope and an atomic force microscope; the obtained nano composite film shows better stability and good water retention performance.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a proton exchange membrane applied to fuel cells and a preparation method thereof. Background technique [0002] Polymer electrolyte membranes have attracted considerable attention for their potential applications in electric vehicles as well as portable electronic devices such as fuel cells, batteries and electrolysis cells, seawater desalination and separation. The fuel cell directly converts chemical energy into electrical energy. The proton exchange membrane (PEM) is one of the important components of the polymer electrolyte membrane fuel cell (PEMFC). Among them, the proton exchange membrane must meet certain application conditions: appropriate water absorption, High proton conductivity and good thermal, mechanical and chemical stability. [0003] The proton exchange membrane plays the role of electrode isolation, and at the same time enables protons to pass through the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1048H01M8/1051H01M8/1032H01M8/1027H01M8/1069H01M8/1086
CPCH01M8/1048H01M8/1051H01M8/1032H01M8/1027H01M8/1069H01M8/1086H01M2008/1095Y02E60/50
Inventor 马海庆姚文东贺迪华
Owner 深圳氢时代新能源科技有限公司
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