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Nano-composite proton exchange membrane as well as preparation method and application thereof

A proton exchange membrane and nanocomposite technology, applied in the field of proton exchange membrane fuel cells, can solve the problems of acid-base composite materials to be explored, and achieve the effect of excellent battery performance

Active Publication Date: 2014-04-09
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In acid-base composites, proton donors (acid groups) and acceptors (base groups) are tightly connected, and protons can be directly transferred between donors and acceptors by jumping mechanism under anhydrous conditions, but the preparation Structurally and performance-stable acid-base composites remain to be explored

Method used

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  • Nano-composite proton exchange membrane as well as preparation method and application thereof
  • Nano-composite proton exchange membrane as well as preparation method and application thereof
  • Nano-composite proton exchange membrane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 4.5 g graphite flakes and 27.0 g KMnO 4 Slowly added to 600 mL of mixed acid (540 mL of concentrated sulfuric acid and 60 mL of phosphoric acid) under vigorous stirring. The reaction solution was heated to 50 °C and stirred for 20 h, then the resulting solution was cooled and poured into 1200 mL of water and 30 mL of H 2 o 2 in the mixture. After ultrasonic treatment for 1 h, centrifuge at 800 rpm for 5 min, and centrifuge the obtained supernatant at 10,000 rpm, suspend the obtained solid in 30 wt% HCL aqueous solution, and disperse the obtained powder in 300 mL of 10 wt% HCL after the supernatant is centrifuged Stirring in medium temperature for 12 h, centrifugation, CH 3 OH was washed, vacuum dried and ground to obtain GO.

[0039]Add 5.0 g GO to 100 mL 2.0 mg mL -1 Dopamine aqueous solution (pH 8.5), stirred at room temperature for 4 h, centrifuged, washed with deionized water, and dried at 60 °C to obtain DGO.

[0040] 0.01875 g DGO was added to 6.0 g DMF, son...

Embodiment 2

[0043] 4.5 g graphite flakes and 27.0 g KMnO 4 Slowly added to 600 mL of mixed acid (540 mL of concentrated sulfuric acid and 60 mL of phosphoric acid) under vigorous stirring. The reaction solution was heated to 50 °C and stirred for 20 h, then the resulting solution was cooled and poured into 1200 mL of water and 30 mL of H 2 o 2 in the mixture. After ultrasonic treatment for 1 h, centrifuge at 800 rpm for 5 min, and centrifuge the obtained supernatant at 10,000 rpm, suspend the obtained solid in 30% HCL aqueous solution, and disperse the obtained powder in 300 mL of 10% HCL after the supernatant is centrifuged Stirring in medium temperature for 12 h, centrifugation, CH 3 OH was washed, vacuum dried and ground to obtain GO.

[0044] Add 5.0 g GO to 100 mL 2.0 mg mL -1 Dopamine aqueous solution (pH 8.5), stirred at room temperature for 4 h, centrifuged, washed with deionized water, and dried at 60 °C to obtain DGO.

[0045] 0.0375 g DGO was added to 7.5 g DMF, sonicated...

Embodiment 3

[0048] 4.5 g graphite flakes and 27.0 g KMnO 4 Slowly added to 600 mL of mixed acid (540 mL of concentrated sulfuric acid and 60 mL of phosphoric acid) under vigorous stirring. The reaction solution was heated to 50 °C and stirred for 20 h, then the resulting solution was cooled and poured into 1200 mL of water and 30 mL of H 2 o 2 in the mixture. After ultrasonic treatment for 1 h, centrifuge at 800 rpm for 5 min, and centrifuge the obtained supernatant at 10,000 rpm, suspend the obtained solid in 30% HCL aqueous solution, and disperse the obtained powder in 300 mL of 10% HCL after the supernatant is centrifuged Stirring in medium temperature for 12 h, centrifugation, CH 3 OH was washed, vacuum dried and ground to obtain GO.

[0049] Add 5.0 g GO to 100 mL 2.0 mg mL -1 Dopamine aqueous solution (pH 8.5), stirred at room temperature for 4 h, centrifuged, washed with deionized water, and dried at 60 °C to obtain DGO.

[0050] 0.05625 g DGO was added to 7.5 g DMF, sonicate...

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Abstract

The invention belongs to the technical field of a proton exchange membrane fuel cell, and particularly relates to a nano-composite proton exchange membrane for the proton exchange membrane fuel cell under a high-temperature anhydrous condition as well as a preparation method and an application thereof. The nano-composite proton exchange membrane is a graphene oxide nano-composite proton exchange membrane which is modified by sulfonated poly(ether ether ketone) and polydopamine. Compared with a pure polymeric membrane, the nano-composite proton exchange membrane provided by the invention has more excellent battery performance and is particularly suitable to be applied under the high-temperature anhydrous condition.

Description

technical field [0001] The invention belongs to the technical field of proton exchange membrane fuel cells, and in particular relates to a nanocomposite proton exchange membrane used in high temperature anhydrous proton exchange membrane fuel cells and its preparation method and application. Background technique [0002] Proton exchange membrane (PEM) is the core component of proton exchange membrane fuel cell (PEMFC), and PEMFC is regarded as one of the most promising clean energy conversion technologies with a huge potential market. Proton exchange membrane (PEM) is one of the key components restricting the commercial application of proton exchange membrane fuel cell (PEMFC), and it is a hot spot in fuel cell technology research. The PEMFCs that have been developed and applied are mainly low-temperature fuel cells, using perfluorosulfonic acid polymers such as DuPont's Nafion as PEM. However, these fuel cell systems have a series of problems, such as low efficiency of the...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/10H01M2/16C08J5/22C08L61/16C08K9/04C08K3/04H01M8/124
CPCY02E60/521H01M8/1041H01M8/1069C08J5/2256C08K3/04C08K9/04C08L2203/16C08L2203/20C08J2361/16H01M2008/1095C08L61/16Y02E60/50
Inventor 王景涛张浩勤和亚昆刘金盾张冰
Owner ZHENGZHOU UNIV
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