Fuel-cell ceramic proton exchange membrane and preparation method thereof

A proton exchange membrane, fuel cell technology, applied in fuel cells, fuel cell parts, solid electrolyte fuel cells, etc. The effect of short life and long working life

Active Publication Date: 2015-03-04
深圳国氢新能源科技有限公司
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  • Abstract
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Problems solved by technology

[0006] Aiming at the defects of high cost, low temperature resistance and short service life of existing polymer exchange membranes, the present invention proposes a fuel cell ceramic proton exchange membrane and a preparation method thereof. In order to achieve the above objectives, the present invention adopts Nano-scale ceramic particles of fixed shape are made into a double-layer continuous ceramic membrane as a fuel cell proton exchange membrane. The ceramic proton exchange membrane has the advantages of high proton conductivity, simple film formation, low cost, high working temperature and long working life. Advantages, suitable for industrial production and application of fuel cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 45 parts by weight of silicon carbide nano ceramic particles with a particle size of 30 nm, 44 parts by weight of ethanol, 2 parts by weight of triolein, 2 parts by weight of ethyl cellulose and 2 parts by weight of diacetate Ethyl oxalate was mixed and ground with a ball mill for 0.5 hours to obtain a mixed solution, and then the mixed solution was cast on a cast film forming machine to form a film with a film thickness of 0.8mm, and then the obtained film was dried at 150°C for 3 hours under vacuum. Finally, the dried film was sintered by microwave at 1000°C for 6 hours to obtain a nano-ceramic film, and then the obtained nano-ceramic film was immersed in 5 parts by weight of phosphotungstic acid proton conduction auxiliary agent solution for 3 hours, taken out, and vacuum-dried for 0.5 hours. h obtained the ceramic proton exchange membrane, after testing, the proton conductivity of the proton exchange membrane was 1.7×10 -1 S / cm, the maximum operating temperature is ...

Embodiment 2

[0030] 46 parts by weight of zirconia nano-ceramic particles with a cubic structure of 60 nm in particle size, 41 parts by weight of toluene, 3 parts by weight of polymethacrylic acid, 2 parts by weight of polyvinyl alcohol and 2 parts by weight of glycerin are mixed with a ball mill Grind for 1 hour to get the mixed solution, then cast the mixed solution on a casting film forming machine to form a film with a film thickness of 0.5mm, then dry the obtained film at 120°C for 2 hours under vacuum, and finally dry the dried film at 1100°C Use discharge plasma sintering at a certain temperature for 8 hours to obtain a nano-ceramic membrane, then intrude the obtained nano-ceramic membrane into 4 parts by weight of silicotungstic acid proton conduction auxiliary agent solution for 2 hours, take it out, and dry it in vacuum for 1 hour to obtain a ceramic proton exchange membrane. , the proton conductivity of the proton exchange membrane is 1.2×10 -1 S / cm, the maximum service temperat...

Embodiment 3

[0032] 47 parts by weight of silicon oxide nano-ceramic particles with a particle size of 90nm with a cuboid structure, 45.5 parts by weight of water, 1.5 parts by weight of polyacrylic acid, 1.5 parts by weight of polymethyl acrylate and 1.5 parts by weight of glycerin and polyethylene The diol was mixed and ground with a ball mill for 0.5 hours to obtain a mixed solution, and then the mixed solution was cast on a cast film forming machine to form a film with a film thickness of 0.6mm, and then the obtained film was dried at 130°C under vacuum for 2 hours, and finally dried The final film was sintered at 900°C for 5 hours to obtain a nano-ceramic film, and then the obtained nano-ceramic film was immersed in 3 parts by weight of zirconium phosphate proton conduction auxiliary agent solution for 1 hour, taken out, and vacuum-dried for 0.5 hours to obtain a ceramic proton film. Exchange membrane, after testing, the proton conductivity of the proton exchange membrane is 1.0×10 -1...

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Abstract

The invention relates to a fuel-cell ceramic proton exchange membrane and a preparation method thereof. Concretely, a nano-level ceramic particle with fixed shape is employed for preparing a ceramic membrane with a double-layer continuous structure, and the ceramic membrane is used as the fuel-cell ceramic proton exchange membrane. The proton exchange membrane has the advantages of high proton electric conductivity, simple film forming process, low cost, high working temperature and long service life, and is suitable for industrial production of fuel batteries and market popularization application.

Description

technical field [0001] The invention relates to the field of fuel cell proton exchange membranes, in particular to a fuel cell ceramic proton exchange membrane and a preparation method thereof. Background technique [0002] The proton exchange membrane is one of the key components in the proton exchange membrane fuel cell (PEMFC). Conducting protons plays an important role in electronic insulation, and its performance directly affects the performance, energy conversion efficiency and service life of batteries. Now widely studied and commercially used are polymer proton exchange membranes, such as perfluorinated proton exchange membranes, non-fluorinated proton exchange membranes, and non-perfluorinated proton exchange membranes; although polymer polymer proton exchange membranes It has the advantages of excellent proton conductivity, low methanol permeability, and simple film formation. However, the polymer materials themselves are easy to degrade, have few sources of raw ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02H01M8/124
CPCH01M8/1016H01M8/124Y02E60/50Y02P70/50
Inventor 陈庆李兴文
Owner 深圳国氢新能源科技有限公司
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