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Metal-molecule-free antiferroelectric solid solution as well as preparation method and application thereof

A solid solution and antiferroelectric technology, which is applied in the preparation of amino compounds from amines, energy storage, and reduction of greenhouse gases. It can solve the problems of restricting the development of molecular ferroic materials and the difficulty of combining molecules, and achieve excellent antiferroelectric properties. The effect of simple reaction and mild conditions

Pending Publication Date: 2022-07-05
MINDU INNOVATION LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unlike metal ions, which exhibit good solid solubility, molecules with different sizes, deformations, and orientations are difficult to combine in a homogeneous phase, which greatly limits the development of molecular ferroic materials.

Method used

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  • Metal-molecule-free antiferroelectric solid solution as well as preparation method and application thereof
  • Metal-molecule-free antiferroelectric solid solution as well as preparation method and application thereof
  • Metal-molecule-free antiferroelectric solid solution as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] (C 7 H 16 The preparation method of N)I protects the following steps: dissolving cyclohexylmethylammonium iodide in water, then warming up to 80 ° C and keeping the temperature for 30 h, then slowly cooling at a rate of 1 ° C every day, and finally through filtration, concentration, and natural air-drying, i.e. colorless flakes (C 7 H 16 N)I.

Embodiment 2

[0044] (C 7 H 16 N)Br 0.5 I 0.5 The preparation method protects the following steps: dissolving cyclohexylmethylamine bromide and cyclohexylmethylammonium iodide with a stoichiometric ratio of 0.5:0.5 in γ-butyrolactone, then warming up to 85 ° C and keeping the temperature for 24 h, followed by daily The temperature was slowly lowered at a rate of 0.5 °C, and finally filtered, concentrated, and air-dried to obtain colorless flakes (C 7 H 16 N)Br 0.5 I 0.5 .

Embodiment 3

[0046] (C 7 H 16 N)Br 0.8 Cl 0.2 The preparation method protects the following steps: dissolving cyclohexylmethylamine bromide and cyclohexylmethylamine chloride with a stoichiometric ratio of 0.8:0.2 in γ-butyrolactone, then warming up to 80 ° C and keeping the temperature for 30 h, then using daily The temperature is slowly lowered at a rate of 1 °C, and finally, after filtration, concentration, and natural air drying, a colorless flake (C 7 H 16 N)Br 0.8 Cl 0.2 .

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Abstract

The invention relates to a metal-molecule-free antiferroelectric solid solution as well as a preparation method and application thereof. The general formula of the solid solution is (C7H16N) BrxI1-x and (C7H16N) BrxCl1-x (0 < = xlt; 1) the material is an antiferroelectric phase at room temperature and belongs to an orthorhombic system; the solid solution shows excellent antiferroelectric properties at the Curie temperature or below, wherein the saturation polarization of the cyclohexyl methylamine chloride can reach 11.4 [mu] C / cm < 2 >. In addition, the solid solution also has near-zero remanent polarization, large coercive field and high breakdown voltage resistance, and can be used as a candidate material of an energy storage dielectric.

Description

technical field [0001] The invention belongs to the field of functional materials, and mainly relates to a metal-free molecular antiferroelectric solid solution, a preparation method and an application. Background technique [0002] In recent years, due to the excessive use of conventional petrochemical energy sources such as coal, oil, and natural gas, global air pollution, energy shortages, and climate warming have become increasingly prominent. Due to the needs of environmental governance and ecological protection, clean new energy such as solar energy, wind energy, and geothermal energy has been vigorously developed and utilized to replace some conventional energy consumption. However, new energy cannot be stored directly and needs to be converted into electrical energy before it can be stored, which makes solid-state energy storage materials attract more and more attention. As an important class of functional materials, antiferroelectric (AFE) materials have the struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/17C07C209/68
CPCC07C211/17C07B2200/13Y02E70/30
Inventor 孙志华徐豪杰郭吴倩罗军华
Owner MINDU INNOVATION LAB
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