Gel diaphragm for new rare-earth power supply and preparation method thereof

A technology of gel and diaphragm, applied in the field of gel diaphragm for rare earth new power supply and its preparation, can solve the problems of unbalanced electrochemical reaction, poor concentration of liquid electrolyte, low liquid electrolyte, etc., and achieve stable product performance and thickness. Carbonization resistance and thickness controllable effect

Active Publication Date: 2018-09-28
包头昊明稀土新电源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in large-scale rare earth new power supplies, the absolute amount of liquid electrolyte absorbed by the diaphragm itself is low. In addition, there is a concentration difference in the liquid electrolyte in terms of height, which leads to unbalanced electroch

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  • Gel diaphragm for new rare-earth power supply and preparation method thereof
  • Gel diaphragm for new rare-earth power supply and preparation method thereof
  • Gel diaphragm for new rare-earth power supply and preparation method thereof

Examples

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Example Embodiment

[0034] Example 1

[0035] The preparation method of the gel diaphragm for rare earth new power source includes the following steps:

[0036] (1) Combine inorganic electrolyte magnesium lithium silicate, CMC and H 2 O, configure according to the mass ratio of 5:3:92, and mark it as liquid A; mix the high molecular polymers PPA and PAAK with the mass ratio of 1:1, the mixed high molecular polymer and H 2 O is configured according to the mass ratio of 5:95 and is marked as B liquid;

[0037] (2) According to the mass ratio of liquid A and liquid B at 1:1, add liquid A into liquid B and stir evenly into liquid C; assemble the detachable movable plate into a rectangular parallelepiped barrel, and arrange the movable plate with multiple rows of holes upwards. Do not install, transfer C solution into the assembled rectangular parallelepiped barrel, cover the movable plate with multiple rows of holes facing upwards, and transfer it to the vacuum box for gel shaping under intermittent vacuum....

Example Embodiment

[0040] Example 2

[0041] The preparation method of the gel diaphragm for rare earth new power source includes the following steps:

[0042] (1) Combine inorganic electrolyte magnesium lithium silicate, CMC and H 2 O, configured according to the mass ratio of 6:4:90, marked as A liquid; mixed high molecular polymers PVA, PAAS, PAA, PFO, the mass ratio 1:1:1:1, mixed high molecular polymers With H 2 O is configured according to the mass ratio of 10:90, marked as B liquid;

[0043] (2) According to the mass ratio of A liquid and B liquid 1:3, add liquid A into liquid B and stir evenly into liquid C; assemble the detachable movable plate into a rectangular parallelepiped barrel, and arrange the movable plate with multiple rows of holes upwards. Do not install, transfer C solution into the assembled rectangular parallelepiped barrel, cover up the movable plate with multiple rows of holes, and transfer it to the vacuum box for gel shaping under intermittent vacuum. The intermittent vacuu...

Example Embodiment

[0046] Example 3

[0047] The preparation method of the gel diaphragm for rare earth new power source includes the following steps:

[0048] (1) Combine inorganic electrolyte magnesium lithium silicate, CMC and H 2 O, configure according to the mass ratio of 8:5:87 and mark it as liquid A; combine the polymer PAAK with H 2 O is configured according to the mass ratio of 8:92 and is marked as B liquid;

[0049] (2) According to the mass ratio of A liquid and B liquid 1:2, add liquid A into liquid B and stir evenly into liquid C; assemble the detachable movable plate into a rectangular parallelepiped barrel, and arrange the movable plate with multiple rows of holes upwards. Do not install, transfer C solution into the assembled rectangular parallelepiped barrel, cover up the movable plate with multiple rows of holes, and transfer it to the vacuum box for gel shaping under intermittent vacuum. The intermittent vacuum parameters are as follows: vacuum is 2.2× 10 -3 Pa, the temperature is...

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Abstract

The present invention belongs to the field of polymer composites and functional materials, and relates to a gel diaphragm for a new rare-earth power supply and a preparation method thereof. After an Asolution and a B solution are mixed, a mixture is placed into a bucket for vacuum gel forming. Then, gel is cut into sheets and is heat-sealed with a diaphragm to obtain the gel diaphragm for a new rare-earth power supply, wherein the A solution is obtained by mixing magnesium lithium silicate, CMC and H2O, and the B solution is obtained by mixing a polymer and water. The gel diaphragm of the present invention is prepared under the combination of inorganic thixotropic gel and organic gel, is controllable in thickness and resistant to carbonization, and has high mechanical strength. The problem that a gel diaphragm with high mechanical strength cannot be prepared under conventional process treatment in the prior art is solved. The gel diaphragm of the present invention has the features ofhigh conductivity and low interfacial energy of a liquid electrolyte, and also has the advantage of good long-range stability of a solid electrolyte. The present invention also provides a preparationmethod of the gel diaphragm. The preparation method can realize industrialization and has good reproducibility. A production process of the preparation method is non-toxic, pollution-free and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of polymer composite functional materials, and relates to a rare earth new power supply gel diaphragm and a preparation method thereof. Background technique [0002] At present, the development of the automobile industry is facing many pressures, and the development of energy-saving and environmentally friendly new energy vehicles has become the consensus of automobile manufacturers all over the world. At present, the rare earth new power supply is the only battery system that has been actually verified and commercialized and scaled up in the battery system used in pure electric buses in cold regions. The pure electric buses that have been mass-produced and actually commercialized in the world all use rare earth New power system. In the field of rare earth new power supplies, my country has advantages in both technology and resources. Among them, the performance of nickel hydroxide is world-leading, and rare earth re...

Claims

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Application Information

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IPC IPC(8): H01M2/16H01M2/18H01M10/30H01M50/403H01M50/446
CPCH01M10/30H01M50/409H01M50/463Y02E60/10
Inventor 孙俊桑商斌蒋志军周德璧方开东徐继亮蒋昊辰杨文浩杨毅夫刘洪涛
Owner 包头昊明稀土新电源科技有限公司
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