Non-oxide porous diaphragm material for high-temperature batteries and preparation method thereof

A porous diaphragm and non-oxide technology, which is applied to fuel cell parts, fuel cells, battery pack parts, etc., can solve the problems of poor diaphragm stability, low ion conductivity, and easy corrosion and fracture, so as to reduce contact, The effect of good mechanical strength and good high temperature stability

Active Publication Date: 2017-05-24
WUHAN UNIV OF TECH
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by this invention is: provide a kind of non-oxide porous diaphragm material and preparation method thereof for high-temperature batteries, to overcome the β "-alumina diaphragm and MgO, LiAlO in the prior art above-mentioned 2 Problems such as poor stability of the oxide diaphragm, easy corrosion and fracture, and low ionic conductivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-oxide porous diaphragm material for high-temperature batteries and preparation method thereof
  • Non-oxide porous diaphragm material for high-temperature batteries and preparation method thereof
  • Non-oxide porous diaphragm material for high-temperature batteries and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh 4.00 g of TiN powder and dry it in vacuum for 24 hours. The average particle size of the TiN powder used is 2 μm. MgO tube was selected as the diaphragm fixing material, and the vacuum-dried TiN powder was placed in a stainless steel mold for dry pressing at a pressure of 20 MPa to obtain a dry pressing sample.

[0045] The vacuum drying process is as follows: put the TiN powder in a vacuum drying oven, set the temperature at 80° C., and take it out after drying for 24 hours.

[0046] The TiN porous diaphragm material was prepared by sintering the sample together with the MgO tube under an argon atmosphere at atmospheric pressure. The specific process was as follows: the sintering temperature was 1200°C, the heating rate was 5°C / min, and the holding time was 3h. The obtained TiN porous diaphragm material has a thickness of 1.2 mm, an open porosity of 24%, and a bending strength of 170 MPa.

[0047] Monolithic assembly of TiN porous membrane materials to Na-NiCl ...

Embodiment 2

[0049] Choose 3.80g SiC powder, 0.20g Y 2 o 3 and 0.10gAl 2 o 3 The powders were mixed evenly and dried in vacuum for 24 hours. The average particle size of the SiC powder used is 2 μm, Y 2 o 3 and Al 2 o 3 The average particle diameter of the powder was 5 μm. A BN tube was selected as the diaphragm fixing material, and the vacuum-dried mixed powder was placed in a stainless steel mold for dry pressing at a pressure of 20 MPa to obtain a dry pressing sample.

[0050] The vacuum drying process is as follows: the mixed powder (solvent is absolute ethanol) after ball milling is placed in a vacuum drying oven, the temperature is set at 60° C., dried for 24 hours, and then taken out.

[0051] The SiC porous diaphragm material was prepared by sintering the sample together with the BN tube under an argon atmosphere at normal pressure. The specific process was as follows: the sintering temperature was 1500°C, the heating rate was 5°C / min, and the holding time was 3h. The obta...

Embodiment 3

[0054] Select 4.50g AlN powder, 0.04g B 2 o 3 and 0.10g Y 2 o 3 The powders were mixed evenly and dried in vacuum for 24 hours. The average particle size of the AlN powder used is 5 μm, B 2 o 3 and Y 2 o 3 The average particle diameter of the powder was 5 μm. MgO tube was chosen as the diaphragm fixing material. The vacuum-dried mixed powder and MgO tube were placed in a hot-pressed sintering mold.

[0055] The vacuum drying process is as follows: the mixed powder (solvent is absolute ethanol) after ball milling is placed in a vacuum drying oven, the temperature is set at 60° C., dried for 24 hours, and then taken out.

[0056] The AlN porous diaphragm material was prepared by hot-pressing and sintering the sample together with the MgO tube in an argon atmosphere. The specific process was as follows: the sintering temperature was 1450°C, the heating rate was 10°C / min, the holding time was 30min, and the pressure was 50MPa. The obtained AlN porous diaphragm material h...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a non-oxide porous diaphragm material for high-temperature batteries. The non-oxide porous diaphragm material for high-temperature batteries comprises TiB2, ZrB2, SiC, ZrC, TiC, BN, AlN, Si3N4, TiN or porous carbon, and the average particle diameter is 2 mu m. The preparation method of the material comprises the following step: carrying out normal-pressure sintering, hot pressed sintering or field-assisted sintering independently on the raw materials of the non-oxide porous diaphragm material or the combination of the raw materials of the non-oxide porous diaphragm material and raw materials of a diaphragm fixing material, thereby obtaining the non-oxide porous diaphragm material. The non-oxide porous diaphragm material provided by the invention has the advantages of stable performance, simple preparation method, low cost and the like, can effectively prevent short-circuiting and enhance the circulation efficiency and number, and can easily implement industrialization.

Description

technical field [0001] The invention belongs to the field of energy storage battery materials, in particular to a non-oxide porous diaphragm material used for high-temperature batteries and a preparation method thereof. [0002] technical background [0003] With the development of social science and technology and the improvement of productivity, the consumption of non-renewable fossil energy is increasing day by day, and environmental problems are becoming more and more serious. In order to cope with the increasingly prominent energy crisis and the pollution of the ecological environment caused by traditional fossil fuels, it is urgent to develop and utilize new types of renewable and clean energy. research hotspot. However, at present, natural wind energy, water energy, and solar power generation have problems such as discontinuity, large volatility, and inability to be directly integrated into the power grid. Large-scale continuous power supply cannot be achieved, and en...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16H01M8/023H01M8/0234
CPCH01M8/023H01M8/0234H01M50/403H01M50/431Y02E60/10Y02E60/50
Inventor 陈斐黄梅张一弛李耘字沈强张联盟
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap