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Two-dimensional MOFs (Metal Organic Frameworks) material with proton conductivity and preparation method thereof

A technology of proton conduction and performance, applied in the field of two-dimensional MOFs materials and its preparation, to achieve the effects of easy industrialization and production, easy control of conditions, and good crystallization ability

Active Publication Date: 2019-04-09
HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, exploring and researching the introduction of bipyridine-containing bisphosphate groups into metal-organic materials is expected to obtain two-dimensional proton-conducting MOFs materials with better performance, which is beneficial to the development of fuel cells. No relevant reports have been seen so far.

Method used

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  • Two-dimensional MOFs (Metal Organic Frameworks) material with proton conductivity and preparation method thereof
  • Two-dimensional MOFs (Metal Organic Frameworks) material with proton conductivity and preparation method thereof
  • Two-dimensional MOFs (Metal Organic Frameworks) material with proton conductivity and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 0.05mmol of 2,2'-bipyridyl-4,4'-diphosphate and CuCl 2 Put 0.05mmol in the bottle, and then add concentrated hydrochloric acid: water (mass ratio) = 1:8, a total of 1.5ml of the mixture into the bottle, heat at 200 degrees Celsius for 5 hours, and naturally cool down to obtain green crystals. Its infrared spectrum is shown in figure 2 .

[0020] Unit cell parameters: The compound crystallizes in the monoclinic system, C2 / c space group, β=100.391°, F(000)=1656.0, Z=8.

Embodiment 2

[0022] 0.05mmol of 2,2'-bipyridyl-4,4'-diphosphate and CuCl 2 Put 0.1mmol in the bottle, and then add concentrated hydrochloric acid: water (mass ratio) = 1:5, a total of 1.5ml of the mixture into the bottle, heat at 240 degrees Celsius for 3 hours, and naturally cool down to obtain green crystals. Its infrared spectrum is shown in figure 2 .

[0023] The proton conductivity test was carried out on the obtained compound: when the relative humidity (RH) was 98%, the proton conductivity of the compound increased with the increase of temperature, and showed a linear relationship, and at 25°C and 100°C Its proton conductivity is, respectively, 1.97×10 -4 and 4.32×10 -3 S cm -1 . Under these conditions, the activation energy of the compound is 0.41 eV. The powder proton conductivity of the compound at 25°C changes little with the increase of humidity (from 1.64×10 at RH 35% -4 1.96 x 10 to RH 98% -4 S cm -1 ). At 100°C, the powder proton conductivity of the compound inc...

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Abstract

The invention relates to the field of proton conductive materials and discloses an MOFs (Metal Organic Frameworks) material with excellent proton conductivity and a preparation method thereof. According to the method, a two-dimensional layer target material is prepared through heating by taking H4L as a linking ligand and taking Cu<2+> and Cl<-> as connection points. The material disclosed by theinvention has the advantages that the proton conductivity is good; the preparation method is simple and easy to operate; the yield is high; the thermodynamic and chemical properties are stable; and the material is easy to popularize and apply in a large area.

Description

technical field [0001] The invention belongs to the technical field of proton-conducting materials, and relates to a two-dimensional MOFs material with proton-conducting properties and a preparation method thereof. Background technique [0002] At present, many advanced energy storage and conversion devices are involved in exploring solutions to energy challenges and environmental problems, among which proton transfer membrane fuel cells are considered to be a very promising choice, mainly because of their excellent characteristics, such as energy High density, low pollutant emissions and mild working conditions (Reference: Barbir F. PEM FuelCells: Theory and Practice. (Elsevier Academic Press, New York, 2005).). Although intensive research has been carried out in the field of proton transfer membrane fuel cells, it is still a challenge to design and synthesize electrode materials with high proton conductivity and stability. In addition, the lack of crystallinity in the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 段显英魏梅林
Owner HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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