Transparent polymer non-aqueous proton conducting material and its preparing method

A transparent polymer, proton-conducting technology, applied in the field of polymer materials and electrochemical materials

Inactive Publication Date: 2005-12-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Transparent polymer non-aqueous proton conducting material and its preparing method
  • Transparent polymer non-aqueous proton conducting material and its preparing method
  • Transparent polymer non-aqueous proton conducting material and its preparing method

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Embodiment 1

[0020] The raw materials used are as follows:

[0021] Polyvinyl alcohol, the number average molecular weight Mn is 17200, the product of Aldrich company.

[0022] Imidazole is a product of Shanghai Runjie Chemical Reagent Co., Ltd.

[0023] 85wt% phosphoric acid, product of Shanghai United Chemical Plant.

[0024] The ratio of raw materials used is as follows:

[0025] Polyvinyl alcohol (MW=17200) 15 parts (number of moles of repeating units)

[0026] 0.5 part of imidazole (number of moles)

[0027] Phosphoric acid 1 part (moles)

[0028] Sample preparation:

[0029] According to the above ratio, phosphoric acid and imidazole were dissolved in deionized water, and stirred at a constant temperature of 90°C for 4 hours to prepare imidazolium phosphate. Dissolve polyvinyl alcohol in deionized water, and stir with a magnetic stirrer at a constant temperature of 100°C until the PVA is completely dissolved to obtain a transparent and uniform viscous li...

Embodiment 2

[0035] The ratio of raw materials used is as follows:

[0036] 15 parts of polyvinyl alcohol (Mn=17200) (number of moles of repeating units)

[0037] 1 part of pyrazole (number of moles)

[0038] Phosphoric acid 1 part (moles)

[0039] Dissolve polyvinyl alcohol and phosphoric acid in deionized water according to the above ratio, stir at a constant temperature of 100°C for 4 hours, mix evenly, and form a film on the polytetrafluoroethylene board by casting the solution, and dry it in vacuum , that is, an all-solid-state PYA / pyrazole / phosphoric acid composite proton-conducting membrane. The proton conductivity and light transmission properties of the obtained composite film are as follows: figure 1 and figure 2 shown.

Embodiment 3

[0041] The ratio of raw materials used is as follows:

[0042] 15 parts of polyvinyl alcohol (Mn=17200) (number of moles of repeating units)

[0043] 1 part of imidazole (number of moles)

[0044] Phosphoric acid 1 part (moles)

[0045] Dissolve polyvinyl alcohol, phosphoric acid and imidazole in deionized water according to the above ratio, stir at a constant temperature of 100°C for 4 hours, mix evenly, and form a film on the polytetrafluoroethylene plate by casting the solution, vacuum After drying, a fully homogeneous PVA / imidazole / phosphoric acid composite proton-conducting membrane can be obtained. The proton conductivity and light transmission properties of the obtained composite film are as follows: figure 1 and figure 2 shown.

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Abstract

The present invention belongs to macromolecule material and electrochemistry technological fields, concretely relating to a kind of transparent polymer non-water proton electric material based on polyvinyl alcohol and nitrogen heterocyclic compound and its producing method. Its characteristic is: add nitrogen heterocyclic compound into normal polyvinyl alcohol/acid compound proton electric system, then its proton conductivity can improve 2 - 4 magnitudes. The light penetrating rate of polyvinyl alcohol/ acid/ nitrogen heterocyclic compound composite membrane is almost the same as normal polyvinyl alcohol/acid compound proton electric membrane in certain content bound of nitrogen heterocyclic compound. It can be widely used in various entire solid state electrochemistry apparatuses.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and electrochemical materials, and in particular relates to a transparent polymer non-aqueous proton conductive material based on polyvinyl alcohol and nitrogen heterocyclic compounds and a preparation method thereof. Background technique [0002] Polymer non-aqueous proton-conducting materials have attracted people's attention due to their high electrical conductivity, wide operating temperature range, all-solid-state easy packaging, and stable physical and chemical properties. They can be widely used in medium-temperature fuel cells, electrochromic devices, and supercapacitors. , sensors and other all-solid-state electrochemical devices. The most researched polymer non-aqueous proton-conducting system is the composite system of polymer and protonic acid, polyvinyl alcohol / phosphoric acid composite membrane is one of the representative systems (Petty-Weeks S., Zupancic J.J.and Swedo J.R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04
Inventor 浦鸿汀黄平
Owner TONGJI UNIV
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