JPH02109256A - Paper battery - Google Patents
Paper batteryInfo
- Publication number
- JPH02109256A JPH02109256A JP63262376A JP26237688A JPH02109256A JP H02109256 A JPH02109256 A JP H02109256A JP 63262376 A JP63262376 A JP 63262376A JP 26237688 A JP26237688 A JP 26237688A JP H02109256 A JPH02109256 A JP H02109256A
- Authority
- JP
- Japan
- Prior art keywords
- conductive coating
- coating film
- conductive
- polyvinyl butyral
- positive electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 30
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims abstract description 25
- 239000011231 conductive filler Substances 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 19
- 239000003973 paint Substances 0.000 claims description 13
- 239000004014 plasticizer Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 12
- 229910002804 graphite Inorganic materials 0.000 abstract description 10
- 239000010439 graphite Substances 0.000 abstract description 10
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 229960002380 dibutyl phthalate Drugs 0.000 abstract 2
- 238000001035 drying Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012799 electrically-conductive coating Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1243—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the internal coating on the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、正極や負極等を積層して作った偏平薄形の
発電要素を用いて構成される、ベーパー電池に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a vapor battery constructed using a flat and thin power generation element made by laminating a positive electrode, a negative electrode, etc.
〈従来の技術〉
この種のベーパー電池、例えばリチウムベーパー電池で
は、従来より、正極合剤と正極集電体あるいはｄ−極端
子板などとの固着性を改善して電池の内部抵抗を低減す
る方法の１つとして、正極合剤と正極集電体ないし正極
端子板などとの間に、導電性を持つ塗膜を介在させるこ
とが提案されている。<Prior art> In this type of vapor battery, for example, a lithium vapor battery, it has conventionally been possible to reduce the internal resistance of the battery by improving the adhesion between the positive electrode mixture and the positive electrode current collector or the d-electrode terminal plate. As one method, it has been proposed to interpose an electrically conductive coating film between the positive electrode mixture and the positive electrode current collector or positive terminal plate.
このような導電性塗膜としては、水ガラス系やフッ素系
樹脂等を結着剤としまたグラファイトやカーボンブラッ
ク等の炭素粉を導電性フィラーとして用いてなる導電性
塗料を、正極集電体や正極端子板の正極合剤対向側の面
に塗布して形成したものが知られている。Such a conductive coating film is made by using a water glass-based or fluorine-based resin as a binder and carbon powder such as graphite or carbon black as a conductive filler. It is known that the material is formed by coating the surface of the positive electrode terminal plate facing the positive electrode mixture.
〈発明が解決しようとする課題〉
しかしながら、この導電性塗料において従来より結着剤
として用いられている水ガラス系やフッ素系樹脂等は固
着性に劣るため合剤保持力が低く、このため電池組立時
において、この導電性塗膜を形成した正極集電体ないし
正極端子板の合剤対向面に正極合剤を載置する際、正極
合剤を所定の位置に固定・保持させることが難しい。<Problems to be Solved by the Invention> However, the water glass-based and fluorine-based resins conventionally used as binders in this conductive paint have poor adhesion and have a low mixture retention ability, which makes them difficult to use in batteries. During assembly, when placing the positive electrode mixture on the mixture-opposing surface of the positive electrode current collector or positive electrode terminal plate on which this conductive coating has been formed, it is difficult to fix and hold the positive electrode mixture in a predetermined position. .
それ故ｉＥ極合剤の位置ズレが起こり品＜、電池組立て
に支障が出る等の問題があった。Therefore, there were problems such as misalignment of the iE electrode mixture, which caused problems in the product and battery assembly.
この発明は、特定の結着剤を用いることで、正極集電体
ないし正極端子板と正極合剤との間の固着性低下を招く
ことなしに、導電性塗膜の合剤保持力を向」ニさせるこ
とかできるペーパー電池を提供することを目的とする。This invention uses a specific binder to improve the retention strength of the conductive coating film without reducing the adhesion between the positive electrode current collector or positive terminal plate and the positive electrode mixture. The aim is to provide a paper battery that can be used for a long time.
〈課題を解決するだめの手段〉
この発明のリチウムペーパー電池は、導電性フィラーと
、結着剤としてポリビニルブチラル（ＰＶＢ）と、また
可塑剤としてフタル酸ジブチル（ＤＢＰ）とを含んでな
る導電性塗料を、正極集電体上ないし正極端子板上に塗
布して導電性塗膜を形成し、更にこの導電性塗膜上に正
極合剤を圧着させ一体化させてなることを要旨とする。<Means for Solving the Problem> The lithium paper battery of the present invention comprises a conductive filler, polyvinyl butyral (PVB) as a binder, and dibutyl phthalate (DBP) as a plasticizer. The gist of the present invention is to apply a conductive paint onto a positive electrode current collector or a positive electrode terminal plate to form a conductive paint film, and then press and bond a positive electrode mixture onto this conductive paint film to integrate the positive electrode mixture. .
尚、上記圧着による一体化後に、３００℃程度の温度で
加熱乾燥処理を行なうようにしてもよい。この加熱乾燥
処理により、導電性塗膜中のポリビニルブチラール並び
にフタル酸ジブチルをそれぞれ８０〜９０重量％程度熱
分解させることができる。Incidentally, after the above-mentioned integration by pressure bonding, a heat drying process may be performed at a temperature of about 300°C. By this heat drying treatment, polyvinyl butyral and dibutyl phthalate in the conductive coating film can be thermally decomposed by about 80 to 90% by weight, respectively.
上記の導電性フィラーとしては、グラファイト、カーボ
ンブラック等の炭素粉末、あるいは銀粉等の金属粉末を
用いることかできる。As the conductive filler, carbon powder such as graphite or carbon black, or metal powder such as silver powder may be used.
そして、ポリビニルブチラール自体は可塑性がないので
、可塑剤を併用する必要がある。この場合、上記のよう
に、ポリビニルブチラールと相溶性のあるフタル酸ジブ
チルを可塑剤に用いることが最適である。Since polyvinyl butyral itself has no plasticity, it is necessary to use a plasticizer together. In this case, as mentioned above, it is optimal to use dibutyl phthalate, which is compatible with polyvinyl butyral, as a plasticizer.
また、このフタル酸ジブチルの添加量をポリビニルブチ
ラールの十分程度とすれば、導電性塗膜を均一なシート
状とし得ることが判っている。It has also been found that if the amount of dibutyl phthalate added is sufficient to the amount of polyvinyl butyral, it is possible to form a conductive coating film in the form of a uniform sheet.
更に、これらポリビニルブチラール、並びにフタル酸ジ
ブチルの添加量は、導電性塗料における導電性フィラー
との合計量に対して、それぞれ２０重量％未満１１０重
量％未満の場合は」二記圧着後に加熱乾燥処理を施す必
要かあり、一方それぞれ５重量％未満、２．５重量％未
満の場合は加熱乾燥処理を施す必要がない。前記範囲内
より多い添加量とした場合は、導電性塗膜の電気抵抗が
大きく増加する。Furthermore, if the amount of polyvinyl butyral and dibutyl phthalate added is less than 20% by weight and less than 110% by weight, based on the total amount of the conductive filler in the conductive paint, heat drying treatment is performed after pressure bonding. On the other hand, if the amount is less than 5% by weight and less than 2.5% by weight, there is no need to perform heat drying treatment. If the amount added is greater than the above range, the electrical resistance of the conductive coating film will increase significantly.
一方、下限は特に限定されず、例えばポリビニルブチラ
ールを０．５重量％用いた場合でも十分な効果が得られ
る。On the other hand, the lower limit is not particularly limited; for example, even when using 0.5% by weight of polyvinyl butyral, sufficient effects can be obtained.
また、上記の導電性塗料に、その延展性を増大させるべ
く、例えばアルコール系溶媒を添加しても良い。このよ
うな溶媒は、上記の加熱乾燥処理をする場合はその際、
またこの処理をしない場合でも作業雰囲気で容易に飛散
させることができる。尚、ポリビニルブチラール、並び
にフタル酸ジブチルは水溶性ではないので溶媒として水
を使用することはできない。Furthermore, an alcohol-based solvent, for example, may be added to the above-mentioned conductive paint in order to increase its spreadability. When such a solvent is subjected to the heat drying treatment described above,
Moreover, even if this treatment is not performed, it can be easily dispersed in the working atmosphere. Note that polyvinyl butyral and dibutyl phthalate are not water-soluble, so water cannot be used as a solvent.
〈作用〉
」二紀のように結着剤としてポリビニルブチラールを用
いることで、導電性塗膜に固着性が付与され、正極合剤
を正極集電体ないし正極端子板に確実に固着させること
ができ、電池の組立容品化が図れる。〈Function〉 By using polyvinyl butyral as a binder like in Niki, adhesiveness is imparted to the conductive coating film, making it possible to reliably adhere the positive electrode mixture to the positive electrode current collector or positive electrode terminal plate. This allows the battery to be assembled into a package.
また、このように導電性塗膜に固着性を持たせることて
正極合剤と正極集電体または正極端子板との固着性が向
上するので、電池内部の接触抵抗を大幅に低下させるこ
とができるという効果がある。In addition, by imparting adhesion to the conductive coating film in this way, the adhesion between the positive electrode mixture and the positive electrode current collector or positive electrode terminal plate is improved, so it is possible to significantly reduce the contact resistance inside the battery. There is an effect that it can be done.
〈実施例〉 次に、実施例について説明する。<Example> Next, examples will be described.
ポリビニルブチラール２４重量部とフタル酸ジブチルｉ
２重量部に、導電性フィラーとしてグラファイト６４重
量部と加え、更に所定量のアルコールと分散剤を添加し
、これらをボールミルにより所定時間混練して導電フィ
ラーを均一に分散させ、導電性の塗料を作製した。24 parts by weight of polyvinyl butyral and dibutyl phthalate
To 2 parts by weight, 64 parts by weight of graphite as a conductive filler was added, and a predetermined amount of alcohol and a dispersant were added, and these were kneaded for a predetermined time using a ball mill to uniformly disperse the conductive filler, thereby forming a conductive paint. Created.
次いで、この導電性塗料を正極端子板に所定量塗布して
、厚さ２〜３μｍの導電性の塗膜を形成した後、導電性
塗膜上に正極合剤を圧着し固定させる。Next, a predetermined amount of this conductive paint is applied to the positive electrode terminal plate to form a conductive coating film with a thickness of 2 to 3 μm, and then the positive electrode mixture is pressed and fixed onto the conductive coating film.
その後、これらを恒温槽中に入れ、３００℃程度の温度
で加熱乾燥処理して、導電性塗膜中のポリビニルブチラ
ール並びにフタル酸ジブチルを熱分解させ、導電性フィ
ラー同士の接触を持だせる。Thereafter, these are placed in a constant temperature bath and heated and dried at a temperature of about 300° C. to thermally decompose the polyvinyl butyral and dibutyl phthalate in the conductive coating film and bring the conductive fillers into contact with each other.
尚、加熱乾燥処理による熱分解後にロールまたはプレス
しても良い。この圧着により、上記の熱分解処理の際に
生した内部の気泡がなくなり、また導電性フィラー同士
の接触性がより高まるため、導電性塗膜の電気抵抗を更
に向上できて好ましい。Note that it may be rolled or pressed after thermal decomposition by heating and drying treatment. This pressure bonding eliminates internal air bubbles generated during the above thermal decomposition treatment and further increases the contact between the conductive fillers, which is preferable because it further improves the electrical resistance of the conductive coating film.
そして、第１図のように、こうして正極端子板７．導電
性塗膜２並びに正極合剤３を組合せて作った正極部を、
セパレータ４を介して負極端子板５にリチウム負極６を
圧着した負極部と組合せ、また正極端子板周縁部と負極
端子板周縁部との間に封口剤７を介在させて両者を密着
させて、図示した通りの、厚さ ０．５順て１．６ｍ１
Ｘ３４ ｉｎの大きさのペーパーリチウム電池（本発明
品）を作製した。Then, as shown in FIG. 1, the positive terminal plate 7. A positive electrode part made by combining the conductive coating film 2 and the positive electrode mixture 3,
A lithium negative electrode 6 is combined with a negative electrode part that is crimped onto a negative terminal plate 5 through a separator 4, and a sealant 7 is interposed between the peripheral edge of the positive terminal plate and the peripheral edge of the negative terminal plate to bring them into close contact. As shown, thickness 0.5 is 1.6m1
A paper lithium battery (product of the present invention) with a size of 34 inches was produced.
一方、上記の導電性塗膜を形成しない他は同様にして、
リチウムペーパー電池（従来品）を作製した。On the other hand, in the same manner except that the above conductive coating film was not formed,
A lithium paper battery (conventional product) was manufactured.
これらの電池を各々 １００個ずつ作り、それぞれの電
池について、各電池の内部抵抗（Ω）を調べ、その平均
値、最大１直並びに最小値などを求めた所、下表の通り
の結果を得た。We made 100 of each of these batteries, checked the internal resistance (Ω) of each battery, and found the average value, maximum 1 series, minimum value, etc., and obtained the results shown in the table below. Ta.
表
範囲を調べるため、導電性塗料における各組成を変化さ
せ、その際の導電性塗膜の電気抵抗の変化を調べた。In order to investigate the table range, each composition of the conductive paint was changed and the change in electrical resistance of the conductive paint film at that time was examined.
この結果は第２図に示した通りであり、電気抵抗が最も
低くなるのは、導電性フィラーであるグラファイトが７
０重量部、またポリビニルブチラール、フタル酸ジブチ
ルがそれぞれ２０重量部１０重量部の付近であり、この
前後の領域ではいずれも電気抵抗が高くなることが判る
。The results are shown in Figure 2, and the electrical resistance is lowest when graphite, which is a conductive filler, has the lowest electrical resistance.
0 parts by weight, and around 20 parts by weight and 10 parts by weight of polyvinyl butyral and dibutyl phthalate, respectively, and it can be seen that the electrical resistance becomes high in both regions before and after this.
尚、この図は導電性塗膜形成後に加熱分解処理を行った
結果である。Note that this figure shows the results of thermal decomposition treatment performed after the conductive coating film was formed.
グラファイトが７０重量部以下（つまりポリビニルブチ
ラールが２０重量部以上）の領域で電気抵抗が大きく増
加する原因としては、余剰のポリビニルブチラールがグ
ラファイト粒子を覆ってしまうことによりグラファイト
同士の接触が不十分となり、電気抵抗か増加するものと
思われる。The reason why the electrical resistance increases significantly in the region where graphite is 70 parts by weight or less (that is, polyvinyl butyral is 20 parts by weight or more) is that the excess polyvinyl butyral covers the graphite particles, resulting in insufficient contact between the graphite particles. , the electrical resistance is expected to increase.
一方、ポリビニルブチラールの添加量が２０重量部未満
の場合、ポリビニルブチラールの量か少量のため、導電
性塗膜に十分な固着性を付与することができなくなり、
グラファイト同士の接触は十分であるにも拘らず、導電
性塗料と正極端子板、導電性塗料とｉＥ極会合剤の接触
が不十分となり、電気抵抗が増加するものと思われる。On the other hand, if the amount of polyvinyl butyral added is less than 20 parts by weight, the amount of polyvinyl butyral is too small to impart sufficient adhesion to the conductive coating.
Although the contact between the graphites is sufficient, it is thought that the contact between the conductive paint and the positive terminal plate, and between the conductive paint and the iE electrode association agent is insufficient, leading to an increase in electrical resistance.
尚、ポリビニルブチラールが２０重量部未満の場合には
、上記のように熱分解処理を行なってポリビニルブチラ
ールの８０〜９０重量％を分解（フタル酸ジブチルも同
様に分解）させる必要があり、それにより、グラファイ
ト同士の接触が十分となって、電気抵抗の低い導電性塗
膜が確保される。If the amount of polyvinyl butyral is less than 20 parts by weight, it is necessary to perform a thermal decomposition treatment as described above to decompose 80 to 90% by weight of the polyvinyl butyral (dibutyl phthalate is also decomposed in the same way). , sufficient contact between graphites is achieved, ensuring a conductive coating film with low electrical resistance.
また、ポリビニルブチラールの添加量を５重量部未満と
した場合、加熱分解処理をしなくともグラファイト同士
が十分接触しているか、または極めて接近しているため
、電子のトンネル効果により、電気抵抗の低い導電性塗
膜を確保することができる。In addition, when the amount of polyvinyl butyral added is less than 5 parts by weight, the graphite particles are in sufficient contact with each other or are very close to each other even without thermal decomposition treatment, resulting in low electrical resistance due to the electron tunneling effect. A conductive coating can be ensured.
〈発明の効果〉
以上のようにこの発明のペーパー電池によれば、電池組
立てに程において正極合剤を正極集電体上ないし正極端
子板上に確実に固着させることができて、電池の組立容
易化が図れる。<Effects of the Invention> As described above, according to the paper battery of the present invention, the positive electrode mixture can be reliably fixed on the positive electrode current collector or the positive electrode terminal plate during the battery assembly process, and the battery assembly can be performed easily. It can be made easier.
更に、正極合剤と正極集電体または正極端子板との固着
性が向上するから、電池内部の接触抵抗が大幅に低下し
、電池性能の向上を図れるという利点もある。Furthermore, since the adhesion between the positive electrode mixture and the positive electrode current collector or positive electrode terminal plate is improved, the contact resistance inside the battery is significantly reduced, and there is also the advantage that battery performance can be improved.
第１図は実施例の電池の断面図、第２図は導電性塗膜に
おけるグラファイトの含有量と電気抵抗との関係を示し
たグラフである。
・正極端子板、
導電性塗膜、
３・・・正極
合剤、
セバレ
夕、
５・・・負極端子板。FIG. 1 is a cross-sectional view of the battery of the example, and FIG. 2 is a graph showing the relationship between the graphite content in the conductive coating film and the electrical resistance.・Positive electrode terminal plate, conductive coating film, 3... Positive electrode mixture, separator, 5... Negative electrode terminal plate.
Claims (1)
ールと、また可塑剤としてフタル酸ジブチルとを含んで
なる導電性塗料を、正極集電体上ないし正極端子板上に
塗布して導電性塗膜を形成し、更にこの導電性塗膜上に
正極合剤を圧着させてなることを特徴とするペーパー電
池。1. A conductive paint containing a conductive filler, polyvinyl butyral as a binder, and dibutyl phthalate as a plasticizer is applied onto the positive electrode current collector or the positive terminal plate to form a conductive coating film. What is claimed is: 1. A paper battery comprising a conductive coating film and a positive electrode mixture being pressure-bonded onto the conductive coating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63262376A JP2878289B2 (en) | 1988-10-18 | 1988-10-18 | Paper battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63262376A JP2878289B2 (en) | 1988-10-18 | 1988-10-18 | Paper battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02109256A true JPH02109256A (en) | 1990-04-20 |
| JP2878289B2 JP2878289B2 (en) | 1999-04-05 |
Family
ID=17374893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63262376A Expired - Fee Related JP2878289B2 (en) | 1988-10-18 | 1988-10-18 | Paper battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2878289B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100403806B1 (en) * | 1996-11-30 | 2003-12-18 | 삼성전자주식회사 | Lithium secondary battery |
| US9659716B2 (en) | 2011-07-29 | 2017-05-23 | Uacj Corporation | Collector and electrode structure, non-aqueous electrolyte cell, electrical double layer capacitor, lithium ion capacitor, or electrical storage device using same |
| US9911546B2 (en) | 2011-07-29 | 2018-03-06 | Uacj Corporation | Current collector, electrode structure, nonaqueous electrolyte battery, electrical storage device, and nitrocellulose resin material |
| SE2251198A1 (en) * | 2022-10-13 | 2024-04-14 | Northvolt Ab | Overlapping edge coating comprising polyvinyl butyralin in an electrode roll, and a cylindrical secondary cell |
-
1988
- 1988-10-18 JP JP63262376A patent/JP2878289B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100403806B1 (en) * | 1996-11-30 | 2003-12-18 | 삼성전자주식회사 | Lithium secondary battery |
| US9659716B2 (en) | 2011-07-29 | 2017-05-23 | Uacj Corporation | Collector and electrode structure, non-aqueous electrolyte cell, electrical double layer capacitor, lithium ion capacitor, or electrical storage device using same |
| US9911546B2 (en) | 2011-07-29 | 2018-03-06 | Uacj Corporation | Current collector, electrode structure, nonaqueous electrolyte battery, electrical storage device, and nitrocellulose resin material |
| SE2251198A1 (en) * | 2022-10-13 | 2024-04-14 | Northvolt Ab | Overlapping edge coating comprising polyvinyl butyralin in an electrode roll, and a cylindrical secondary cell |
| SE546181C2 (en) * | 2022-10-13 | 2024-06-18 | Northvolt Ab | Overlapping edge coating comprising polyvinyl butyral in an electrode roll, and a cylindrical secondary cell |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2878289B2 (en) | 1999-04-05 |
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