CN108172419B - enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof - Google Patents
enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof Download PDFInfo
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- CN108172419B CN108172419B CN201810006302.8A CN201810006302A CN108172419B CN 108172419 B CN108172419 B CN 108172419B CN 201810006302 A CN201810006302 A CN 201810006302A CN 108172419 B CN108172419 B CN 108172419B
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- paper
- electrolytic capacitor
- tencel
- diaphragm paper
- super
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- 239000003990 capacitor Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 229920000433 Lyocell Polymers 0.000 claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 229920002678 cellulose Polymers 0.000 claims abstract description 20
- 239000001913 cellulose Substances 0.000 claims abstract description 20
- 239000002121 nanofiber Substances 0.000 claims abstract description 20
- 238000010009 beating Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 20
- 238000001514 detection method Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 13
- 230000035699 permeability Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/52—Separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Paper (AREA)
Abstract
The invention relates to a diaphragm paper of a super electrolytic capacitor and a preparation method thereof. The enhanced diaphragm paper for the super electrolytic capacitor is composed of 60-99% of tencel fibers and 1-40% of cellulose nanofibers in percentage by weight. According to the invention, the cellulose nanofibers are added into the tencel pulp, so that the diaphragm paper of the super electrolytic capacitor with good absorptivity and low internal resistance is obtained, and meanwhile, the diaphragm paper has high strength, and the strength is increased by more than 0.3 kN/m.
Description
Technical Field
The invention relates to a diaphragm paper of a super electrolytic capacitor and a preparation method thereof.
Background
Electrolytic capacitors are one of the important components in the electronics industry, and play a particular role in circuits such as rectifier circuits, power supply circuits and ac motor starting circuits, in addition to the functions of filtering, decoupling and signal coupling. The method is widely applied to the fields of automobile industry, security industry, medical electronics, computer televisions, electronic toys, industrial control and the like. The electrolytic capacitor paper is a lining material for adsorbing electrolyte in the electrolytic capacitor, and the performance of the electrolytic capacitor paper directly influences the quality of the electrolytic capacitor.
The super electrolytic capacitor is a novel power type electronic component which appears along with the rapid development of electronic technology and the breakthrough of material science in recent years. It is between common electrolytic capacitor and battery, has higher capacity than common electrolytic capacitor, can be as high as thousands farads; the discharge power is higher than that of a common battery, and the discharge current can reach thousands of amperes. In short, the capacitor has the characteristics of battery capacity, quick charge and discharge performance of the capacitor, safety, reliability, wide application range and the like. The super capacitor has great application value and market potential in the aspects of automobiles (particularly electric automobiles), electric power, railways, communication, national defense, consumer electronics and the like.
The diaphragm paper used by the super capacitor is different from the diaphragm paper used by the common electrolytic capacitor, and the strength of the diaphragm paper is lower than that of the diaphragm paper of the common electrolytic capacitor due to the special raw materials. The low tensile strength may cause easy breakage during assembly, lowering production efficiency, and also may reduce the puncture resistance of the separator paper, resulting in increased leakage current, or even short circuit. Therefore, a separator for a supercapacitor needs to have a high tensile strength, and no good solution is available at present.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is a second object of the present invention to provide a method for producing a separator paper for a reinforced type super electrolytic capacitor, which has a low paper tightness, a small and uniform pore size, and a high tensile strength and is suitable for use in a super capacitor.
In order to achieve the first object, the present invention adopts the following technical solutions:
The enhanced diaphragm paper for the super electrolytic capacitor is composed of 60-99% of tencel fibers and 1-40% of cellulose nanofibers in percentage by weight.
Preferably, the tencel fiber accounts for 80-99% by weight, and the cellulose nanofiber accounts for 1-20% by weight.
Preferably, the tencel fiber accounts for 92-99% by weight, and the cellulose nanofiber accounts for 1-8% by weight.
The cellulose nano-fiber content of the invention is lower than 1 percent, and the enhancement effect on paper is not obvious; the chemical fiber content is higher than 40%, the porosity of the paper is low, the internal resistance is high, and the internal resistance and loss of the diaphragm paper of the super electrolytic capacitor are increased.
In order to achieve the second object, the present invention adopts the following technical solutions:
A method of making said separator paper, comprising the steps of:
1) Adding 80-99 parts of tencel pulp into water to prepare raw pulp with the mass concentration of 3.0-5.0%;
2) The obtained tencel raw pulp is processed by a disc grinder or a beater to obtain pulp A with the mass concentration of 3.0-5.0%, the beating degree of 85-98 DEG SR and the wet weight of 5.0-20 g;
3) Adding 1-20 parts of cellulose nanofibers into a stirring barrel, uniformly dispersing, and adding into the slurry A to obtain slurry B;
4) And (3) carrying out composite forming on the slurry B through a double-rotary screen, and squeezing, drying, curling and slitting after forming to obtain the high-strength diaphragm paper for the super electrolytic capacitor.
by adopting the technical scheme, the cellulose nanofiber is added into the tencel pulp, so that the diaphragm paper of the super electrolytic capacitor with good absorptivity and lower internal resistance is obtained, and meanwhile, the diaphragm paper has higher strength and the strength is increased by more than 0.3 kN/m.
Detailed Description
Reference example 1
The sizing degree of the tencel fiber is 85 DEG SR, a cylinder paper machine is adopted for papermaking, and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like are manufactured into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process by the papermaking process.
Reference example 2
The sizing degree of the tencel fiber is 88 degrees SR, a cylinder paper machine is adopted for papermaking, and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like are manufactured into indexes such as capacity, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process by the papermaking process.
Example 1
The beating degree of the tencel fiber is 85 DEG SR, and the ratio of the tencel fiber to the cellulose nanofiber is 99: 1, adopting a cylinder paper machine to manufacture paper, and making the paper into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like by a paper making process.
example 2
The beating degree of the tencel fiber is 85 DEG SR, and the ratio of the tencel fiber to the cellulose nanofiber is 97: 3, adopting a cylinder paper machine to manufacture the paper, and making the paper into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like by the paper making process.
Example 3
The beating degree of the tencel fiber is 85 DEG SR, and the ratio of the tencel fiber to the cellulose nanofiber is 95: 5, adopting a cylinder paper machine to manufacture the super capacitor, and manufacturing indexes of capacitance, leakage current, internal resistance and the like of the super capacitor according to the conventional process and indexes of paper sheet detection tightness, thickness, tensile strength, air permeability and the like by the papermaking process.
Example 4
The beating degree of the tencel fiber is 85 DEG SR, and the ratio of the tencel fiber to the cellulose nanofiber is 92: 8, adopting a cylinder paper machine to manufacture the paper, and making the paper into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like by the paper making process.
Example 5
The beating degree of the tencel fiber is 90R, and the ratio of the tencel fiber to the cellulose nanofiber is 99: 1, adopting a cylinder paper machine to manufacture paper, and making the paper into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like by a paper making process.
Example 6
the beating degree of the tencel fiber is 90R, and the ratio of the tencel fiber to the cellulose nanofiber is 97: 3, adopting a cylinder paper machine to manufacture the paper, and making the paper into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like by the paper making process.
Example 7
The beating degree of the tencel fiber is 90R, and the ratio of the tencel fiber to the cellulose nanofiber is 95: 5, adopting a cylinder paper machine to manufacture the super capacitor, and manufacturing indexes of capacitance, leakage current, internal resistance and the like of the super capacitor according to the conventional process and indexes of paper sheet detection tightness, thickness, tensile strength, air permeability and the like by the papermaking process.
Example 8
The beating degree of the tencel fiber is 90R, and the ratio of the tencel fiber to the cellulose nanofiber is 92: 8, adopting a cylinder paper machine to manufacture the paper, and making the paper into indexes such as capacitance, leakage current, internal resistance and the like of the detection capacitor of the super capacitor according to the conventional process and indexes such as paper sheet detection tightness, thickness, tensile strength, air permeability and the like by the paper making process.
the test data for each of the above examples is as follows:
Claims (3)
1. The enhanced diaphragm paper for the super electrolytic capacitor is characterized by comprising 60-99% of tencel fibers and 1-40% of cellulose nanofibers in percentage by weight;
The preparation method of the diaphragm paper comprises the following steps:
1) Adding water into 60-99 parts of tencel pulp to prepare raw pulp with the mass concentration of 3.0-5.0%;
2) The obtained tencel raw pulp is processed by a disc grinder or a beater to obtain pulp A with the mass concentration of 3.0-5.0%, the beating degree of 85-98 DEG SR and the wet weight of 5.0-20 g;
3) Adding 1-40 parts of cellulose nanofibers into a stirring barrel, uniformly dispersing, and adding into the slurry A to obtain slurry B;
4) And (3) carrying out composite forming on the slurry B through a double-rotary screen, and squeezing, drying, curling and slitting after forming to obtain the high-strength diaphragm paper for the super electrolytic capacitor.
2. the reinforced supercapacitor separator paper according to claim 1, wherein the tencel fibers are 80-99% and the cellulose nanofibers are 1-20% by weight.
3. The reinforced supercapacitor separator paper according to claim 1, wherein the tencel fibers are 92-99% and the cellulose nanofibers are 1-8% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006302.8A CN108172419B (en) | 2018-01-04 | 2018-01-04 | enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006302.8A CN108172419B (en) | 2018-01-04 | 2018-01-04 | enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108172419A CN108172419A (en) | 2018-06-15 |
| CN108172419B true CN108172419B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006302.8A Active CN108172419B (en) | 2018-01-04 | 2018-01-04 | enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN108172419B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267415A (en) * | 2018-09-10 | 2019-01-25 | 浙江凯恩特种纸业有限公司 | A kind of production method of super electrolytic capacitor diaphragm paper |
| CN109056403A (en) * | 2018-09-10 | 2018-12-21 | 浙江凯恩特种纸业有限公司 | A kind of high intensity super electrolytic capacitor diaphragm paper and preparation method thereof |
| CN109594426B (en) * | 2018-12-04 | 2021-05-11 | 株洲时代新材料科技股份有限公司 | Electrolytic capacitor paper |
| CN115387160A (en) * | 2021-05-24 | 2022-11-25 | 中国制浆造纸研究院有限公司 | Super capacitor paper containing nanocellulose and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696558A (en) * | 2009-10-23 | 2010-04-21 | 浙江凯恩特种材料股份有限公司 | Super electrolytic capacitor paper |
| CN102856522A (en) * | 2012-10-09 | 2013-01-02 | 中国海诚工程科技股份有限公司 | High temperature-resistant cellulose fiber base material-containing lithium ion battery diaphragm and preparation method of the same |
| CN104114479A (en) * | 2012-02-15 | 2014-10-22 | 北越纪州制纸株式会社 | Porous body and process for manufacturing same |
| CN104294711A (en) * | 2014-10-14 | 2015-01-21 | 长沙理工大学 | Method for preparing insulation paper containing tencel fibers |
| CN104988809A (en) * | 2015-06-26 | 2015-10-21 | 浙江凯恩特种材料股份有限公司 | High voltage resistant electrolytic capacitor paper and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522517A (en) * | 2011-12-22 | 2012-06-27 | 中国科学院青岛生物能源与过程研究所 | Cellulose/inorganic particle composite diaphragm for lithium secondary battery and preparation method thereof |
-
2018
- 2018-01-04 CN CN201810006302.8A patent/CN108172419B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696558A (en) * | 2009-10-23 | 2010-04-21 | 浙江凯恩特种材料股份有限公司 | Super electrolytic capacitor paper |
| CN104114479A (en) * | 2012-02-15 | 2014-10-22 | 北越纪州制纸株式会社 | Porous body and process for manufacturing same |
| CN102856522A (en) * | 2012-10-09 | 2013-01-02 | 中国海诚工程科技股份有限公司 | High temperature-resistant cellulose fiber base material-containing lithium ion battery diaphragm and preparation method of the same |
| CN104294711A (en) * | 2014-10-14 | 2015-01-21 | 长沙理工大学 | Method for preparing insulation paper containing tencel fibers |
| CN104988809A (en) * | 2015-06-26 | 2015-10-21 | 浙江凯恩特种材料股份有限公司 | High voltage resistant electrolytic capacitor paper and preparation method thereof |
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| Publication number | Publication date |
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| CN108172419A (en) | 2018-06-15 |
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Effective date of registration: 20210928 Address after: 323300 no.1008 Kain Road, miaogao street, Suichang County, Lishui City, Zhejiang Province Patentee after: ZHEJIANG KAN SPECIAL PAPER Co.,Ltd. Patentee after: Zhejiang Kaien New Material Co.,Ltd. Address before: 323399 no.1008 Kain Road, Suichang County, Lishui City, Zhejiang Province Patentee before: ZHEJIANG KAN SPECIALTIES MATERIAL Co.,Ltd. Patentee before: ZHEJIANG KAN SPECIAL PAPER Co.,Ltd. |
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Effective date of registration: 20211206 Address after: 323399 no.1008 Kain Road, Suichang County, Lishui City, Zhejiang Province Patentee after: Zhejiang KAN Specialties Material Co.,Ltd. Patentee after: Zhejiang Kaien New Material Co.,Ltd. Patentee after: ZHEJIANG KAN SPECIAL PAPER CO.,LTD. Address before: 323300 no.1008 Kain Road, miaogao street, Suichang County, Lishui City, Zhejiang Province Patentee before: ZHEJIANG KAN SPECIAL PAPER CO.,LTD. Patentee before: Zhejiang Kaien New Material Co., Ltd |