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Diimidazole diiodide platinum/polymer hybrid proton exchange membrane and preparation method thereof

A proton exchange membrane and diimidazole technology, which is applied in the field of diimidazole diiodide platinum/polymer hybrid proton exchange membrane and its preparation, can solve the problems of hybrid membrane proton conduction performance decline, proton transfer channel tortuous, etc., to achieve Good industrial production basis, improved proton conductivity, and the effect of increasing water content

Inactive Publication Date: 2016-07-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the dispersibility and compatibility of inorganic particles in the polymer matrix, water molecules tend to interact with SiO 2 Combined, the proton transfer channel is more tortuous and no longer coherent, so although the water retention capacity of the hybrid membrane is improved, the proton conduction performance is decreased

Method used

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  • Diimidazole diiodide platinum/polymer hybrid proton exchange membrane and preparation method thereof
  • Diimidazole diiodide platinum/polymer hybrid proton exchange membrane and preparation method thereof
  • Diimidazole diiodide platinum/polymer hybrid proton exchange membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] At room temperature, in a dark environment, 60 mg of potassium chloroplatinite (K 2 [PtCl 4 ]) was dissolved in 7ml of deionized water, and ultrasonically placed to obtain a uniform solution; 10mg of potassium iodide (KI) was added to the above solution, and allowed to react for 30min; finally, 15mg of imidazole (Im) was added to the above mixture, and allowed to react 24h. The brown-yellow precipitate obtained above is washed with a large amount of deionized water and absolute ethanol, and finally the product is dried, and the product obtained is denoted as PtIm 2 I 2 , that is, diimidazole diiodoplatinum. PtIm 2 I 2 Dissolved in N,N-dimethylformamide to give 0.5% (w / w) of PtIm 2 I 2 / DMF solution. Take a certain amount of Nafion TM After the solution was rotary evaporated, N,N-dimethylformamide was added to obtain a 100 mg / ml Nafion / DMF solution, and the rotary evaporation was continued for 10 minutes. Add a certain amount of 0.5% (w / w) PtIm to the above sol...

Embodiment 2

[0028] At room temperature, in a dark environment, 40 mg of potassium chloroplatinite (K 2 [PtCl 4 ]) was dissolved in 7ml of deionized water, and ultrasonically placed to obtain a uniform solution; 10mg of potassium iodide (KI) was added to the above solution, and allowed to react for 30min; finally, 20mg of imidazole (Im) was added to the above mixture, and allowed to react 24h. The brown-yellow precipitate obtained above is washed with a large amount of deionized water and absolute ethanol, and finally the product is dried, and the product obtained is denoted as PtIm 2 I 2 , that is, diimidazole diiodoplatinum. PtIm 2 I 2 Dissolved in N,N-dimethylformamide to give 0.5% (w / w) of PtIm 2 I 2 / DMF solution. Take a certain amount of Nafion TM After the solution was rotary evaporated, N,N-dimethylformamide was added to obtain a 100 mg / ml Nafion / DMF solution, and the rotary evaporation was continued for 10 minutes. Add a certain amount of 0.5% (w / w) PtIm to the above sol...

Embodiment 3

[0035] At room temperature, in a dark environment, 50 mg of potassium chloroplatinite (K 2 [PtCl 4 ]) was dissolved in 7ml of deionized water, and ultrasonically placed to obtain a uniform solution; 200mg of potassium iodide (KI) was added to the above solution, and allowed to react for 30min; finally, 100mg of imidazole (Im) was added to the above mixture, and allowed to react for 24h . The brown-yellow precipitate obtained above is washed with a large amount of deionized water and absolute ethanol, and finally the product is dried, and the product obtained is denoted as PtIm 2 I 2 , that is, diimidazole diiodoplatinum. PtIm 2 I 2 Dissolved in N,N-dimethylformamide to give 0.5% (w / w) of PtIm 2 I 2 / DMF solution. Take a certain amount of Nafion TM After the solution was rotary evaporated, N,N-dimethylformamide was added to obtain a 100 mg / ml Nafion / DMF solution, and the rotary evaporation was continued for 10 minutes. Add a certain amount of 0.5% (w / w) PtIm to the ab...

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Abstract

The invention belongs to the technical field of membranes, in particular to a diimidazolium diiodide platinum / polymer hybrid proton exchange membrane and a preparation method thereof. In the present invention, potassium chloroplatinite and potassium iodide are mixed and then reacted, then imidazole is added therein, washed and dried, the obtained product is added into a polymer solution, ultrasonically prepared into a casting solution, coated and formed into a film, and then baked, and finally After being activated by soaking in hydrogen peroxide solution and acid, a diimidazole diiodide platinum / polymer hybrid proton exchange membrane is obtained. Compared with the pure polymer proton exchange membrane, the proton conductivity of the proton exchange membrane prepared by the invention is greatly improved, and the methanol permeability does not increase significantly even under the harsh conditions of high methanol concentration and / or high temperature. The method of the invention has simple operation process, mild preparation conditions, easy batch and large-scale production, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of membranes, and in particular relates to a diimidazole diiodide platinum / polymer hybrid proton exchange membrane and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell has become the most competitive clean alternative power source for gasoline internal combustion engine power due to its advantages of fast start-up, high specific power, simple structure, and convenient operation. Among them, the proton exchange membrane, as the core component of the fuel cell, provides channels for the migration and transport of protons, so its comprehensive performance plays a vital role in the fuel cell. An ideal proton exchange membrane should have a certain mechanical strength, the permeability of fuel (methanol or hydrogen, etc.) in the membrane should be as small as possible, and the most important thing is to have excellent proton conductivity, that is, high energy conversi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/22C08L27/18C08L61/16C08L79/04C08L79/08C08K5/56H01M8/02H01M2/16C07F15/00H01M8/1041H01M8/1081
CPCY02P70/50Y02E60/50
Inventor 杨丽佳汤蓓蓓武培怡
Owner FUDAN UNIV
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