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Adhesive for battery electrolyte membrane

A technology of electrolyte membrane and adhesive, applied in solid electrolyte, non-aqueous electrolyte, non-aqueous electrolyte battery, etc., can solve the problem of expensive perfluoropolymer, and achieve the effect of stable battery characteristics, high affinity, and environmental protection and safety.

Inactive Publication Date: 2018-03-13
杨昌恩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As ion-conductive binders used in sub-exchange fuel cells, perfluorosulfonic acid polymers are generally used due to their chemical stability. However, perfluoropolymers are very expensive. In addition, perfluoropolymers include fluorine , it is necessary to take into account the impact on the environment when synthesizing and handling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A binder for a battery electrolyte membrane, the binder comprising at least one cross-linked polymer, the cross-linked polymer being a block copolymer, the block copolymer comprising a polymer block and a flexible The polymer block, the main unit of the polymer block is an aromatic propylene-based polymer unit, and the polymer block has a monovalent anion-conducting group; the mass ratio between the polymer block and the flexible polymer block is 10:90.

[0019] Wherein, the degree of polymerization of the block copolymer is 100-1000.

[0020] Wherein, the block copolymer is catalyzed by transition elements, and the transition elements are selected from platinum-ruthenium alloys.

[0021] Wherein, the α-carbon in the aromatic propylene-based polymer unit is a tertiary carbon, and has an ion-conducting group on the polymer block.

[0022] Wherein, the percentage of aromatic propylene-based polymer units whose α-carbon is a tertiary carbon in the polymer block is greate...

Embodiment 2

[0024] A binder for a battery electrolyte membrane, the binder comprising at least one cross-linked polymer, the cross-linked polymer being a block copolymer, the block copolymer comprising a polymer block and a flexible The polymer block, the main unit of the polymer block is an aromatic propylene-based polymer unit, and the polymer block has a monovalent anion-conducting group; the mass ratio between the polymer block and the flexible polymer block is 30:70.

[0025] Wherein, the degree of polymerization of the block copolymer is 100-1000.

[0026] Wherein, the transition element is a mixture of platinum-ruthenium alloy and platinum-osmium alloy with a mass ratio of 1:1.2.

[0027] Wherein, the α-carbon in the aromatic propylene-based polymer unit is a tertiary carbon, and has an ion-conducting group on the polymer block.

[0028] Wherein, the percentage of aromatic propylene-based polymer units whose α-carbon is a tertiary carbon in the polymer block is greater than or eq...

Embodiment 3

[0030] A binder for a battery electrolyte membrane, the binder comprising at least one cross-linked polymer, the cross-linked polymer being a block copolymer, the block copolymer comprising a polymer block and a flexible The polymer block, the main unit of the polymer block is an aromatic propylene-based polymer unit, and the polymer block has a monovalent anion-conducting group; the mass ratio between the polymer block and the flexible polymer block is 50:50.

[0031] Wherein, the degree of polymerization of the block copolymer is 100-1000.

[0032] Wherein, the transition element is a mixture of platinum-ruthenium alloy and platinum-osmium alloy with a mass ratio of 1:1.3.

[0033] Wherein, the α-carbon in the aromatic propylene-based polymer unit is a tertiary carbon, and has an ion-conducting group on the polymer block.

[0034] Wherein, the percentage of aromatic propylene-based polymer units whose α-carbon is a tertiary carbon in the polymer block is greater than or eq...

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Abstract

The invention relates to the technical field of battery electrolytes, in particular to an adhesive for a battery electrolyte membrane. The adhesive comprises at least one cross-linked polymer, whereinthe cross-linked polymer is a block polymer; the block polymer comprises a polymer block and a flexible polymer block; a main unit of the polymer block is an aromatic propenyl polymer unit; the polymer block has a monovalent anionic conduction group; and the mass ratio of the polymer block to the flexible polymer block is (10:90) to (90:10). The adhesive for the battery electrolyte membrane is low in production cost and environment-friendly and safe in use; and meanwhile, the adhesive for the battery electrolyte membrane has higher affinity on a polymer electrolyte membrane, and the interfacecharacteristics and the long-term stability of a battery can be improved. According to the adhesive for the battery electrolyte membrane, high proton conductivity is provided for a large number of proton conducting polymers, such as a sulfonic acid group in adhesive resin. Therefore, the adhesive has higher ion exchange capacity than other polymers.

Description

technical field [0001] The invention relates to the technical field of battery electrolytes, in particular to a binder for battery electrolyte membranes. Background technique [0002] Lithium battery electrolyte is the carrier of ion transmission in the battery. It is generally composed of lithium salt and organic solvent. Organic solvent (such as ethanol) or new ionic liquid (N-methylimidazole) is used as the electrolyte solution. [0003] As ion-conductive binders used in sub-exchange fuel cells, perfluorosulfonic acid polymers are generally used due to their chemical stability. However, perfluoropolymers are very expensive. In addition, perfluoropolymers include fluorine , it is necessary to take into account the impact on the environment when synthesizing and processing. Contents of the invention [0004] The object of the present invention is to overcome the disadvantages of the prior art and provide a low-cost, safe and environment-friendly binder for battery electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M10/0565
CPCH01M10/052H01M10/0565H01M2300/0082Y02E60/10
Inventor 杨昌恩
Owner 杨昌恩