JPH0660865A - Electrode for secondary battery - Google Patents
Electrode for secondary batteryInfo
- Publication number
- JPH0660865A JPH0660865A JP4233147A JP23314792A JPH0660865A JP H0660865 A JPH0660865 A JP H0660865A JP 4233147 A JP4233147 A JP 4233147A JP 23314792 A JP23314792 A JP 23314792A JP H0660865 A JPH0660865 A JP H0660865A
- Authority
- JP
- Japan
- Prior art keywords
- insoluble
- infusible substrate
- powder
- infusible
- crushing
- 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
Classifications
-
- 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
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は２次電池用電極に係り、
更に詳しくは、芳香族系ポリマーの熱処理物の粉砕物に
ポリテトラフルオロエチレン系結合剤（以下ＰＴＦＥ系
結合剤と記す）を加え、混合・混練し、該混練物を破砕
し、圧縮成型して得られたポリアセン系骨格構造を有す
る２次電池用電極に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary battery electrode,
More specifically, a polytetrafluoroethylene-based binder (hereinafter referred to as a PTFE-based binder) is added to a pulverized product of a heat-treated aromatic polymer, mixed and kneaded, and the kneaded product is crushed and compression molded. The present invention relates to a secondary battery electrode having a polyacene skeleton structure.
【０００２】[0002]
【従来の技術】高分子材料は成型性，軽量性および量産
性に優れている。そのため高分子材料のこれらの特性を
生かして、電気的に半導性を有する有機高分子材料がエ
レクトロニクス産業を始めとして多くの産業分野におい
て希求されている。初期の有機半導体はフイルム状ある
いは板状体等に成型することが困難であり、又ｎ型ある
いはｐ型の不純物半導体としての性質を有していなかっ
たため、用途的にも限定されていた。近年、比較的成型
性に優れた有機半導体が得られるようになり、しかもこ
れらの半導体に電子供与性ドーパントあるいは電子受容
性ドーパントをドーピングすることによってｎ型あるい
はｐ型の有機半導体とすることが可能となった。そのよ
うな有機半導体の代表例として、ポリアセチレンがあ
る。ところがポリアセチレンは酸素によって酸化され易
い欠点がある。このため空気中で取り扱うことが困難で
あり、工業材料としては実用性に欠ける。本願の出願人
の出願にかかる、特開昭５９−３８０６号公報には
（Ａ）炭素，水素および酸素から成る芳香族系ポリマー
の熱処理物であって、水素原子／炭素原子の原子比が
０．６０〜０．１５で表わされるポリアセン系骨格構造
を含有する不溶不融性基体と、（Ｂ）電子供与性ドーピ
ング剤又は電子受容性ドーピング剤とから成り、（Ｃ）
電気伝導性が未ドープの該基体よりも大であることを特
徴とする電気伝導性有機高分子系材料。が提案されてい
る。2. Description of the Related Art Polymer materials are excellent in moldability, light weight and mass productivity. Therefore, by utilizing these characteristics of the polymer material, an organic polymer material having electrical semiconductivity is desired in many industrial fields including the electronics industry. The early organic semiconductors were difficult to be formed into a film-like or plate-like body, and did not have the property as an n-type or p-type impurity semiconductor, so that their applications were limited. In recent years, it has become possible to obtain organic semiconductors having relatively excellent moldability, and it is possible to obtain an n-type or p-type organic semiconductor by doping these semiconductors with an electron-donating dopant or an electron-accepting dopant. Became. Polyacetylene is a typical example of such an organic semiconductor. However, polyacetylene has a drawback that it is easily oxidized by oxygen. Therefore, it is difficult to handle in air, and it is not practical as an industrial material. Japanese Patent Application Laid-Open No. 59-3806, filed by the applicant of the present application, discloses a heat-treated product of (A) an aromatic polymer composed of carbon, hydrogen and oxygen, wherein the atomic ratio of hydrogen atoms / carbon atoms is 0. 60 to 0.15, which is composed of an insoluble and infusible substrate containing a polyacene-based skeleton structure, and (B) an electron-donating or electron-accepting doping agent, and (C).
An electrically conductive organic polymer-based material, which has an electrical conductivity higher than that of the undoped substrate. Is proposed.
【０００３】該材料は空気中で安定であり、工業材料と
して実用的である。しかしながら、この先願において
も、ポリアセン系骨格構造を有する不溶不融性基体から
なる有機高分子系材料を板状，円筒状等の成型体とする
時熱処理時の寸法安定性に問題があり、正確な寸法の材
料を得る事は難しく、また、大きなサイズの成型体を得
ようとした時、熱処理時にクラック等が発生するという
問題が残されていた。一方、セラミックス材料，炭素材
料等の様々な分野で粉末体を成型して目的とする形状の
製品を得る事は、一般的方法として知られており、成型
性に優れ、かつ高性能の粉末に対するニーズも大きい。
本願の出願人の出願に係る、特開平２−２１４７６２号
公報に記載の粉末材料では、結合剤と混合しただけで圧
縮成型すると、十分な強度を有する圧縮成型体を得るこ
とができなかった。The material is stable in air and is practical as an industrial material. However, even in this prior application, there is a problem in dimensional stability during heat treatment when an organic polymer material made of an insoluble and infusible substrate having a polyacene skeleton structure is formed into a plate-shaped, cylindrical, or the like, It is difficult to obtain a material having various sizes, and there is a problem that cracks and the like are generated during the heat treatment when trying to obtain a large-sized molded body. On the other hand, it is known as a general method to mold a powder body in various fields such as ceramic materials and carbon materials to obtain a product having a desired shape, and to obtain a powder having excellent moldability and high performance. The needs are also great.
With the powder material described in Japanese Patent Application Laid-Open No. 2-214762, which was filed by the applicant of the present application, a compression molded article having sufficient strength could not be obtained when compression molding was performed only by mixing with a binder.
【０００４】[0004]
【発明が解決しようとする課題】本発明者らは、ポリア
セン系骨格構造を含有する不溶不融性基体を粉砕し、粉
末化し、ＰＴＦＥ系結合剤を加え、混合・混練し、該混
練物を破砕して得られた顆粒状不溶不融性基体を圧縮成
型することにより上述の問題点を解決した。本発明の目
的は、半導性ないし導電体の電気伝導性を有し、且つ成
型性に優れた顆粒状粒子を圧縮成型することによって得
られる２次電池用電極を提供することにある。更に他の
目的および効果は以下の説明から明らかにされよう。DISCLOSURE OF THE INVENTION The inventors of the present invention crushed an insoluble and infusible substrate containing a polyacene skeleton structure, pulverized it, added a PTFE binder, and mixed and kneaded the mixture to obtain a kneaded product. The above-mentioned problems were solved by compression-molding a granular insoluble and infusible substrate obtained by crushing. An object of the present invention is to provide an electrode for a secondary battery obtained by compression-molding granular particles having semiconductivity or electric conductivity of a conductor and excellent in moldability. Still other objects and effects will be apparent from the following description.
【０００５】[0005]
【課題を解決するための手段】本発明の上記目的は、炭
素・水素および酸素から成る芳香族系ポリマーの熱処理
物であって、水素原子／炭素原子の原子比が０．０５〜
０．５であるポリアセン系骨格構造を含有する不溶不融
性基体粉末に、ＰＴＦＥ系結合剤を加え、混合混練し、
該混練物を破砕して得られる顆粒状不溶不融性基体を圧
縮成型することを特徴とする２次電池用電極によって達
成される。The above object of the present invention is a heat-treated product of an aromatic polymer composed of carbon / hydrogen and oxygen, wherein the atomic ratio of hydrogen atoms / carbon atoms is 0.05 to.
A PTFE binder was added to an insoluble infusible base powder containing a polyacene skeleton structure of 0.5, mixed and kneaded,
This is achieved by an electrode for a secondary battery, characterized in that a granular insoluble and infusible substrate obtained by crushing the kneaded product is compression-molded.
【０００６】上記のポリアセン系骨格構造を含有する不
溶不融性基体とは、特開昭５９−３８０６号公報に記載
される芳香族系縮合ポリマーを特定の条件で熱処理する
ことにより得られる。具体的には本発明に用いる該芳香
族系ポリマーは（ａ）フェノール・ホルムアルデヒド樹
脂の如き、フェノール性水酸基を有する芳香族系炭化水
素化合物とアルデヒド類の縮合物、（ｂ）キシレン変性
フェノール，ホルムアルデド樹脂（フェノールの一部を
キシレンで置換したもの）の如き、フェノール性水酸基
を有する芳香族系炭化水素化合物，フェノール性水酸基
を有さない芳香族系炭化水素化合物およびアルデヒドの
縮合物及び（ｃ）フラン樹脂が好適である。The insoluble and infusible substrate containing the polyacene skeleton structure is obtained by heat-treating the aromatic condensation polymer described in JP-A-59-3806 under specific conditions. Specifically, the aromatic polymer used in the present invention is (a) a condensate of an aldehyde with an aromatic hydrocarbon compound having a phenolic hydroxyl group such as a phenol / formaldehyde resin, (b) a xylene-modified phenol, formaldehyde. Aromatic resin such as a deresin (a part of phenol is replaced by xylene), an aromatic hydrocarbon compound having a phenolic hydroxyl group, an aromatic hydrocarbon compound having no phenolic hydroxyl group, and a condensate of aldehyde, and (c ) Furan resins are preferred.
【０００７】本発明における不溶不融性基体は、上記の
如き芳香族系ポリマーの熱処理物であって例えば次のよ
うにして製造することができる。前記した芳香族系ポリ
マーに塩化亜鉛，リン酸ナトリウム等の無機塩を混合す
る。これにより、不溶不融性基体に多孔性を付与するこ
とができる。混入する量は、無機塩の種類及び目的とす
る電極の形状，性能によって異なるが、重量比で１０／
１〜１／７が好ましい。また、多孔性でありかつ連通孔
を有する基体を得る場合には、無機塩を芳香族系縮合ポ
リマーの２．５〜１０重量倍の量で用いることが好まし
い。このようにして得られた無機塩と芳香族系縮合ポリ
マーの混合物を、フィルム状，板状等の目的とする形と
なし、５０〜１８０℃の温度で２〜９０分間加熱するこ
とにより硬化成型する。かくして得られた硬化体を、次
いで非酸化性雰囲気中で４００〜８００℃の温度、好ま
しくは４５０〜７５０℃の温度、特に好ましくは５００
〜７００℃の温度まで加熱する。この熱処理によって芳
香族系縮合ポリマーは、脱水素脱水反応をおこし、芳香
環の縮合反応によって、ポリアセン系骨格構造が形成さ
れる。得られた熱処理体を水あるいは希塩酸等で十分洗
浄することによって、熱処理体中に含まれている無機塩
を除去する。その後、これを乾燥すると不溶不融性基体
が得られる。The insoluble and infusible substrate in the present invention is a heat-treated product of the aromatic polymer as described above and can be produced, for example, as follows. An inorganic salt such as zinc chloride or sodium phosphate is mixed with the aromatic polymer described above. This makes it possible to impart porosity to the insoluble and infusible substrate. The amount to be mixed depends on the type of inorganic salt, the shape and performance of the intended electrode, but the weight ratio is 10 /
1 to 1/7 is preferable. Further, in the case of obtaining a substrate which is porous and has communicating holes, it is preferable to use the inorganic salt in an amount of 2.5 to 10 times by weight that of the aromatic condensation polymer. The mixture of the inorganic salt and the aromatic condensation polymer thus obtained is formed into a desired shape such as a film or a plate, and is cured by heating at a temperature of 50 to 180 ° C. for 2 to 90 minutes. To do. The cured product thus obtained is then subjected to a temperature of 400 to 800 ° C., preferably 450 to 750 ° C., particularly preferably 500 in a non-oxidizing atmosphere.
Heat to a temperature of ~ 700 ° C. By this heat treatment, the aromatic condensation polymer undergoes a dehydrogenation dehydration reaction, and a polyacene skeleton structure is formed by the condensation reaction of the aromatic ring. The heat-treated body thus obtained is thoroughly washed with water, diluted hydrochloric acid or the like to remove the inorganic salt contained in the heat-treated body. Then, this is dried to obtain an insoluble and infusible substrate.
【０００８】この反応は熱縮合重合の一種であり、反応
度は最終生成物の水素原子／炭素原子（以後Ｈ／Ｃと云
う）で表わされる原子数比によって表わされる。不溶不
融性基体のＨ／Ｃの値は０．０５〜０．５、好ましく
は、０．１５〜０．３５である。不溶不融性基体のＨ／
Ｃの値が０．５より大きい場合は、ポリアセン系骨格構
造が未発達なため電気伝導度が低く好ましくない。一
方、Ｈ／Ｃの値が０．０５より小さい場合、ドーピング
できるドーパント量が少なく好ましくない。次に該不溶
不融性基体を粉砕することによって、不溶不融性基体粉
末を得ることができる。本発明の不溶不融性基体粉末を
得るためには、当然のことながら装置の機種を選定する
ことが重要であるが、その中で一般に知られているボー
ルミル，振動ミル，ジェットミル等の微粉砕可能な装置
が好ましい。例えばボールミルによる粉砕の場合、粉砕
時間が数分〜１００時間が適当であるが、その時間は得
るものによって決定すべきものである。かくして該不溶
不融性基体粉末が得られる。さらに該粉末の平均粒径は
０．１〜５．０μｍ、好ましくは０．１〜２．０μｍで
ある。平均粒径が上限より大きい場合、該粉末を用いて
成型品とした時、実用的に十分な強度が得にくく、下限
より小さい場合、粉砕効率，粉砕時間の点から実用的で
ない。This reaction is a kind of thermal condensation polymerization, and the degree of reaction is represented by the number ratio of hydrogen atoms / carbon atoms (hereinafter referred to as H / C) in the final product. The H / C value of the insoluble and infusible substrate is 0.05 to 0.5, preferably 0.15 to 0.35. Insoluble / infusible substrate H /
If the value of C is larger than 0.5, the polyacene skeleton structure is undeveloped and the electrical conductivity is low, which is not preferable. On the other hand, when the H / C value is less than 0.05, the amount of dopant that can be doped is small, which is not preferable. Next, the insoluble and infusible substrate powder can be obtained by pulverizing the insoluble and infusible substrate. In order to obtain the insoluble and infusible base powder of the present invention, it is naturally important to select the type of equipment, but among them, generally known ball mills, vibration mills, jet mills, etc. Millable devices are preferred. For example, in the case of crushing by a ball mill, a crushing time of several minutes to 100 hours is suitable, and the time should be determined depending on what is obtained. Thus, the insoluble and infusible substrate powder is obtained. Further, the average particle size of the powder is 0.1 to 5.0 μm, preferably 0.1 to 2.0 μm. When the average particle size is larger than the upper limit, it is difficult to obtain a practically sufficient strength when the powder is used to form a molded product, and when the average particle size is smaller than the lower limit, it is not practical in terms of grinding efficiency and grinding time.
【０００９】顆粒状不溶不融性基体は、上記不溶不融性
基体粉末にＰＴＦＥ系結合剤を加え、市販の混合機，ま
たは造粒機、例えばダルトン（株）製 品川ミキサー等
の混合機により混合する。このときのＰＴＦＥ系結合剤
としては、ポリテトラフルオロエチレン（ＰＴＦＥ），
ポリクロロトリフルオロエチレン（ＰＣＴＦＥ），テト
ラフルオロエチレン−エチレン共重合体（ＥＴＦＥ），
テトラフルオロエチレン−ヘキサフルオロプロピレン共
重合体（ＦＥＰ），テトラフルオロエチレン−パーフル
オロアルキルビニルエーテル共重合体（ＰＦＡ）等が挙
げられるがＰＴＦＥが特に好ましく、エマルジョンタイ
プでも粉末タイプでもよい。ＰＴＦＥ系結合剤量は、不
溶不融性基体粉末１００重量部に対し、３〜３０重量部
（固形分）が好ましい。得られた混合物を混練機により
混練する。混練機としては、二軸ローラー，ニーダー，
スクリュー押出機，らいかい機等があるが、練り作用の
行なえる装置であればなんでもよいが、二軸ローラーが
好ましい。次に得られた混練物を破砕し、顆粒状不溶不
融性基体を得る。破砕する装置は一般に知られているコ
ーヒーミル，カッティングミル等特に限定されるもので
はない。The granular insoluble and infusible substrate is prepared by adding a PTFE binder to the insoluble and infusible substrate powder, and mixing it with a commercially available mixer or a granulator such as a Shinagawa mixer manufactured by Dalton Co., Ltd. Mix. At this time, as the PTFE-based binder, polytetrafluoroethylene (PTFE),
Polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-ethylene copolymer (ETFE),
Examples thereof include tetrafluoroethylene-hexafluoropropylene copolymer (FEP) and tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), but PTFE is particularly preferable, and emulsion type or powder type may be used. The amount of the PTFE binder is preferably 3 to 30 parts by weight (solid content) with respect to 100 parts by weight of the insoluble and infusible base powder. The obtained mixture is kneaded by a kneader. As a kneader, a twin-screw roller, a kneader,
There are a screw extruder, a raider, etc., but any device that can perform the kneading action may be used, but a biaxial roller is preferable. Next, the obtained kneaded product is crushed to obtain a granular insoluble and infusible substrate. The crushing device is not particularly limited, such as a generally known coffee mill and cutting mill.
【００１０】さらにこの不溶不融性基体を乾燥し、圧縮
成型を行なう。該不溶不融性基体はそのままでも成型可
能であるが、その粒径を小さくして用いることもでき
る。粒径は１０〜２０００μｍが好ましいが、その粒径
は、成型物の形状により選択されるべきものである。成
型するための圧縮成型機は市販の打錠機を使用すること
により自動的に成型物となる。例えばロータリー型打錠
機あるいは単発式打錠機でよい。すなわち、臼部ときね
部とがあり、臼部に入った顆粒状粒子をかきとることに
より、一定量の粒子が臼部に入る。それを上下からきね
で圧縮し、抜き出すことにより、成型物、すなわち電池
用電極となる。かくして圧縮成型しやすい顆粒状粒子か
ら、２次電池用電極が得られる。Further, the insoluble and infusible substrate is dried and compression molded. The insoluble and infusible substrate can be molded as it is, but it can also be used by reducing its particle size. The particle size is preferably 10 to 2000 μm, but the particle size should be selected according to the shape of the molded product. As a compression molding machine for molding, a commercially available tableting machine is used to automatically obtain a molded product. For example, a rotary type tableting machine or a single shot type tableting machine may be used. That is, there are a mortar and a ridge, and a certain amount of particles enter the mortar by scraping the granular particles that have entered the mortar. A molded product, that is, a battery electrode, is obtained by compressing it from above and below with a crevice and extracting it. Thus, the secondary battery electrode can be obtained from the granular particles that are easily compression-molded.
【００１１】[0011]
【発明の効果】本発明に係る２次電池用電極は、ポリア
セン系骨格構造を含有する不溶不融性基体粉末とＰＴＦ
Ｅ系結合剤との混合物を混練後、破砕することによって
得られる顆粒状不溶不融性基体を用いることにより圧縮
成型が可能で、充分な強度を有する電極となる。さらに
は臼部の形状を変えることにより、板状，円板状に成型
できる。以下、実施例により本発明を具体的に説明す
る。The secondary battery electrode according to the present invention comprises an insoluble and infusible base powder containing a polyacene skeleton structure and PTF.
By using a granular insoluble and infusible substrate obtained by kneading a mixture with an E-type binder and then crushing, compression molding is possible and an electrode having sufficient strength is obtained. Furthermore, by changing the shape of the die, it can be molded into a plate shape or a disk shape. Hereinafter, the present invention will be specifically described with reference to examples.
【００１２】実施例 水溶性レゾール（約６０％濃度）／塩化亜鉛／水を重量
比で１０／２５／４の割合で混合した水溶液を１００ｍ
ｍ×２ｍｍの型に流し込みその上にガラス板を被せ水分
が蒸発しない様にした後、約１００℃の温度で１時間加
熱して硬化させた。該フェノール樹脂をシリコニット電
気炉中に入れ窒素気流下で４０℃／時間の速度で昇温し
て、５００℃まで熱処理を行なった。次に該熱処理物を
希塩酸で洗った後、水洗いし、その後乾燥することによ
って板状の不溶不融性基体（Ｓ1 −１）を得た。上記
（Ｓ1 −１）の不溶不融性基体を、本願の出願人の出願
に係る、特開平２−２１４７６２号公報に記載のボール
ミルで平均粒径０．５μｍの不溶不融性基体粉末（（Ｓ
1 −２）が得られるよう粉砕した。上記（Ｓ1 −２）の
該粉末１００部に対し、ＰＴＦＥ系結合剤１０部（固形
分）と水１５０部とを加え、ステンレスビーカー内で混
合した。上記の混合物（Ｓ1 −３）を二軸ローラーにて
混練し、厚さ２ｍｍの板状の混練物（Ｓ1 −４）とし
た。上記（Ｓ1 −４）の混練物をあらかじめ３〜５ｍｍ
角の大きさにカットし、さらにコーヒーミルにて破砕
し、顆粒状不溶不融性基体（Ｓ1 −５）とした。上記
（Ｓ1 −５）の顆粒状不溶不融性基体を圧縮成型機にて
厚さ１ｍｍ，直径１５ｍｍφの円板状に圧縮成型を行な
った。該成型物（Ｓ1 −６）の強度を確認するため、円
板状の該成型物を１０個抜き出し、直径部分から３０°
の角度に曲げてみたが、１０個中１０個とも割れは生じ
ていず、充分な強度を有していた。 比較例 実施例（Ｓ1 −２）と同様な方法で平均粒径０．５μｍ
の不溶不融性基体粉末（Ｓ0 −２）を作成した。該粉末
１００部に対し、ＰＴＦＥ３０部（固形分）と、水１５
０部と加え、ステンレスビーカー内で混合し、へらで攪
拌し、乾燥し、顆粒状不溶不融性基体（Ｓ0 −５）を得
た。該基体（Ｓ0 −５）を実施例と同様な方法で圧縮成
型を行ない、該成型物の強度を１０個試験したが、１０
個中１０個とも３０°の角度に曲げると割れてしまっ
た。EXAMPLE An aqueous solution prepared by mixing water-soluble resol (about 60% concentration) / zinc chloride / water at a weight ratio of 10/25/4 is 100 m.
After pouring it into a m × 2 mm mold and covering it with a glass plate to prevent water from evaporating, it was heated at a temperature of about 100 ° C. for 1 hour to be cured. The phenol resin was put into a silicon knit electric furnace, heated under a nitrogen stream at a rate of 40 ° C./hour, and heat-treated to 500 ° C. Then, after washing the heat-treated product with dilute hydrochloric acid, washed with water, to obtain a plate-like insoluble and infusible base (S 1 -1) by subsequent drying. The insoluble infusible substrate powder (S 1 -1) described above is prepared by the ball mill described in Japanese Patent Application Laid-Open No. 2-214762 filed by the applicant of the present application and having an average particle size of 0.5 μm. (S
It was pulverized to obtain 1-2 ). To 100 parts of the powder of the above (S 1-2 ), 10 parts of PTFE-based binder (solid content) and 150 parts of water were added and mixed in a stainless beaker. The mixture of the (S 1 -3) were kneaded with a biaxial roller, and a plate-like kneaded product with a thickness of 2mm (S 1 -4). Advance 3~5mm the kneaded product of the above (S 1 -4)
Cut to the size of the corner, further crushed in a coffee mill to a granular insoluble and infusible base (S 1 -5). The (S 1 -5) granular insoluble and infusible substrate thickness of 1mm in the compression molding machine of, was performed compression molded into a disk form having a diameter of having a diameter of 15 mm. To confirm the strength of the molded type product (S 1 -6), the disc-shaped molded form was withdrawn 10, 30 ° from the diameter portion
Bending at an angle of 10 showed no cracking in 10 out of 10 pieces, and had sufficient strength. Comparative Example By the same method as in Example (S 1-2 ), the average particle size was 0.5 μm.
Insoluble infusible substrate powder (S 0 -2) was prepared. With respect to 100 parts of the powder, 30 parts of PTFE (solid content) and 15 parts of water
In addition to 0 parts, the mixture was mixed in a stainless beaker, stirred with a spatula, and dried to obtain a granular insoluble and infusible substrate (S 0 -5). The substrate (S 0 -5) was compression-molded in the same manner as in the example, and 10 pieces of the molded product were tested for strength.
All 10 pieces cracked when bent at an angle of 30 °.
Claims (1)
縮合ポリマーの熱処理物であって、水素原子／炭素原子
の原子比が０．０５〜０．５であるポリアセン系骨格構
造を含有する不溶不融性基体粉末に、ポリテトラフルオ
ロエチレン系結合剤及を加え、混合・混練し、該混練物
を破砕して得られる顆粒状不溶不融性基体を圧縮成型す
ることを特徴とする２次電池用電極。1. A heat-treated product of an aromatic condensation polymer composed of carbon / hydrogen and oxygen, which contains a polyacene skeleton structure having an atomic ratio of hydrogen atoms / carbon atoms of 0.05 to 0.5. Secondary in which a granular insoluble infusible substrate obtained by adding a polytetrafluoroethylene-based binder and the like to the infusible substrate powder, mixing and kneading and crushing the kneaded product is compression-molded. Battery electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4233147A JP2723763B2 (en) | 1992-08-06 | 1992-08-06 | Electrodes for secondary batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4233147A JP2723763B2 (en) | 1992-08-06 | 1992-08-06 | Electrodes for secondary batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0660865A true JPH0660865A (en) | 1994-03-04 |
| JP2723763B2 JP2723763B2 (en) | 1998-03-09 |
Family
ID=16950461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4233147A Expired - Lifetime JP2723763B2 (en) | 1992-08-06 | 1992-08-06 | Electrodes for secondary batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2723763B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1055801A (en) * | 1996-08-09 | 1998-02-24 | Toshiba Battery Co Ltd | Nonaqueous solvent secondary battery, manufacture of negative electrode mix therefor and device for the manufacture |
-
1992
- 1992-08-06 JP JP4233147A patent/JP2723763B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1055801A (en) * | 1996-08-09 | 1998-02-24 | Toshiba Battery Co Ltd | Nonaqueous solvent secondary battery, manufacture of negative electrode mix therefor and device for the manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2723763B2 (en) | 1998-03-09 |
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