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Resin composition and organic-electrolyte battery

一种树脂组合物、有机电解液的技术，应用在非水电解质蓄电池、二次电池、电池电极等方向，能够解决空隙狭窄、难以形成高信赖性的密封结构等问题，达到信赖性高、粘合性优秀、防止液体接界的效果

Active Publication Date: 2012-05-16
AJINOMOTO CO INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the number of power generating elements increases, the overall thickness of the corresponding stacked battery also increases. Because of the increase in size, the power generating elements (stacked unit of positive electrode / electrolyte layer / negative electrode) must be made thinner. The gap between the two current collectors sandwiched becomes narrower, making it difficult to form a highly reliable sealing structure with conventional polyolefin-based adhesives and polyvinylidene fluoride resins.

Method used

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  • Resin composition and organic-electrolyte battery
  • Resin composition and organic-electrolyte battery
  • Resin composition and organic-electrolyte battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6、 comparative example 1～4

[0150] A resin composition having a composition shown in Table 1 below was prepared.

[0151] Preparation of the resin composition weighed an epoxy resin (A component), a curing agent (B component), and a co-curing agent (C component), and mixed them for 10 minutes using a kneader. Then, a predetermined amount of filler (component D) was added and mixed for 20 minutes, passed through a three-roll compactor twice, and degassed and mixed with a kneader for 30 minutes to prepare.

[0152] The physical properties (viscosity, glass transition temperature of cured product) of the resin compositions of Examples and Comparative Examples were measured by the following methods, and the following evaluation tests were provided.

[0153] 1. Viscosity of the resin composition (25°C)

[0154] Using an E-type viscometer (RE-80U manufactured by Toki Sangyo Co., Ltd.), in accordance with the procedure of JIS-K7117-2, using a rotor of 3°×R9.7, the value measured at 5 rpm and 2 minutes is a mea...

Embodiment 7～13、 comparative example 6

[0189] A resin composition having a composition shown in Table 2 below was prepared.

[0190] Preparation of the resin composition weighed an epoxy resin (A component), a curing agent (B component), and a co-curing agent (C component), and mixed them for 10 minutes using a kneader. Then, a predetermined amount of filler (component D) was added and mixed for 20 minutes, passed through a three-roll compactor twice, and degassed and mixed with a kneader for 30 minutes to prepare. The adjusted resin composition was provided for the above test.

[0191] [Table 2]

[0192]

[0193] In the record of Table 2 (removal of duplicate content with Table 1), EP9003-1 is an epoxy resin containing a terpene structure skeleton produced by ADEKA Company (a low-viscosity product of EP9003, viscosity (25°C)=90poise), EP9003 -2 is an epoxy resin containing a terpene structure skeleton produced by ADEKA (a high-viscosity product of EP9003, viscosity (25°C)=230poise), YL7291 is an epoxy resin c...

Embodiment 14～20

[0195] Resin compositions having compositions shown in Table 3 below were prepared.

[0196] Preparation of the resin composition weighed an epoxy resin (A component), a curing agent (B component), and a co-curing agent (C component), and mixed them for 10 minutes using a kneader. Then, a predetermined amount of filler (component D) was added and mixed for 20 minutes, passed through a three-roll compactor twice, and degassed and mixed with a kneader for 30 minutes to prepare. The adjusted resin composition was provided for the above test.

[0197] [table 3]

[0198]

[0199] In the records in Table 3 (removal of duplicate contents in Tables 1 and 2), ZX1059 is a liquid bisphenol AD ​​epoxy resin (epoxy equivalent: 165) produced by Dongdu Chemical Co., Ltd., and MX965 is a silicone rubber produced by KANEKA Rubber-like core-shell structure polymer modified epoxy resin (epoxy equivalent: 220), RKB3040 is a butadiene rubber-like rubber-like core-shell structure polymer modif...

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Abstract

Provided is a resin composition having excellent adhesion to metals and high resistance to organic solvents. In particular, the resin composition is suitable for use as a sealing material for organic-electrolyte batteries which has excellent adhesion to terminals or current collectors constituted of a highly heat-resistant metal such as stainless steel or nickel, is less apt to deteriorate even upon contact with high-temperature organic electrolytes, and is less apt to affect the electrolytes. Also provided is a highly reliable organic-electrolyte battery in which the electrolyte is prevented from oozing out from the electrolyte layer by the action of the resin composition. The resin composition is characterized by comprising an epoxy resin (A) comprising an epoxy resin (E1) having an aromatic ring and an alicyclic skeleton and a latent hardener (B). The organic-electrolyte battery has a positive electrode comprising a current collector (13) and a positive active-material layer (2) electrically bonded to the surface thereof, a negative electrode comprising a current collector (13) and a negative active-material layer (6) electrically bonded to the surface thereof, and an electrolyte layer (7) disposed between the positive electrode and the negative electrode, the battery including a sealing part formed by tightly filling the gap between the peripheral edge parts of the two opposed current collectors (13) with a cured object (12) formed from the resin composition.

Description

technical field [0001] The present invention relates to a resin composition having both excellent adhesion to metal and high resistance to organic solvents, in particular to a resin composition suitable for use as a sealant for organic electrolyte batteries and to a resin composition formed from the resin composition. An organic electrolyte battery with high long-term reliability of the sealed part. Background technique [0002] In recent years, as secondary batteries, organic electrolyte batteries that can achieve small size, light weight, high output, and high energy density have attracted attention, and among them, lithium-ion secondary batteries have become the mainstream. The sealant used here is a very important material for isolating the organic electrolyte from external water. [0003] Heretofore, resin-based sealing agents have been used, for example, polyolefin-based adhesives (Japanese Patent Document 1), polyvinylidene fluoride resins (Japanese Patent Document 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/24C08G59/50H01M2/06H01M2/08H01M2/30H01M4/66H01M10/0566H01M10/0585H01M50/178H01M50/186H01M50/193H01M50/548H01M50/562
CPCY02E60/12H01M2/30C08G59/24H01M10/0585C08G59/50H01M10/052C08L63/00H01M10/05C08G59/26H01M2/08Y02E60/122H01M4/661C08G59/4014C08G59/4021H01M2/06Y02E60/10Y02P70/50H01M50/562H01M50/186H01M50/193H01M50/178H01M50/548C08L2666/22C08G59/5006H01M4/66
Inventor 天野博荻野启志保坂贤司仙北谷良一下井田良雄堀江英明
Owner AJINOMOTO CO INC
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