Organic/inorganic hybrid phase-change energy-storage material with enhanced thermal conductivity and preparation method thereof

A phase-change energy storage material, heat conduction enhancement technology, applied in the field of energy storage, to achieve broad application prospects, high energy storage density, and good shapeability

Active Publication Date: 2011-01-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no reports on thermal conductivity-enhanced organic / inorganic hybrid phase-change energy storage materials and their preparation methods in which chemically bonded thermally conductive enhanced inorganic composites are used as supporting materials and organic phase change materials are used as working substances.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 1~2 mmol ethyl tetrasilicate, 1~2 mmol methyl tetratitanate, 5~50ml water, 0.1~2ml hydrochloric acid, 5~200ml ethanol, 1-10mmol polyethylene glycol 1000 (PEG1000) into the reaction system , stirred at 20-100°C for 1-24h to form a gel, took out the gel, put it in an oven and aged it at 20-100°C for 1-24h, and obtained a thermal conductivity-enhanced PEG1000 / silicon-titanium oxide composite hybrid phase change energy storage Material.

Embodiment 2

[0019] Add 1~2 mmol methyl tetrasilicate, 1~2 mmol methyl tetratitanate, 5~50ml water, 0.1~2ml hydrochloric acid, 5~200ml ethanol, 1-10mmol polyethylene glycol 1000 (PEG1000) into the reaction system , stirred at 20-100°C for 1-24h to form a gel, took out the gel, put it in an oven and aged it at 20-100°C for 1-24h, and obtained a thermal conductivity-enhanced PEG1000 / silicon-titanium oxide composite hybrid phase change energy storage Material.

Embodiment 3

[0021] Add 1~2 mmol butyl tetrasilicate, 1~2 mmol methyl tetratitanate, 5~50ml water, 0.1~2ml hydrochloric acid, 5~200ml ethanol, 1-10mmol polyethylene glycol 1000 (PEG1000) into the above system , stirred at 20-100°C for 1-24h to form a gel, took out the gel, put it in an oven and aged it at 20-100°C for 1-24h, and obtained a thermal conductivity-enhanced PEG1000 / silicon-titanium oxide composite hybrid phase change energy storage Material.

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Abstract

The invention provides an organic / inorganic hybrid phase-change energy-storage material with enhanced thermal conductivity and a preparation method thereof, belonging to the energy storage technical field. The preparation method comprises the following steps: taking an inorganic compound with enhanced thermal conductivity connected by chemical bonds as a supporting material, and taking an organicphase-change energy-storage material as a working substance; hydrolyzing and condensing with an inorganic compound-sol precursor; and compounding and hybridizing with the organic phase-change material to obtain the organic / inorganic hybrid phase-change energy-storage material. The organic / inorganic hybrid phase-change energy-storage material has the advantages of good shaping property, high energy storage density and wide application prospect, thus being applicable to the fields such as energy-saving building materials, solar energy storage and utilization, industrial waste heat recovery and the like.

Description

technical field [0001] The invention relates to an organic / inorganic hybrid phase-change energy storage material with enhanced heat conduction and a preparation method thereof, belonging to the technical field of energy storage. Background technique [0002] my country is in the process of accelerating industrialization and urbanization, and the demand for energy has a very large room for growth. However, the supply and demand of energy have a strong time dependence in many cases. In order to solve the contradiction between energy supply and demand imbalance, improve energy utilization efficiency and protect the environment, energy storage technology has emerged as the times require. Energy storage is to use specific technology to store excess energy when energy is abundant, and release it when energy is insufficient, so as to effectively improve energy utilization efficiency and achieve energy saving [Renewable and sustainable energy reviews, 2009,13(2), 318-345]. This ke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCY02P20/10
Inventor 唐炳涛邱美鸽张淑芬贾超
Owner DALIAN UNIV OF TECH
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