JP2000348713A - Manufacture of positive electrode mix for battery and positive electrode plate for battery using positive electrode mix - Google Patents
Manufacture of positive electrode mix for battery and positive electrode plate for battery using positive electrode mixInfo
- Publication number
- JP2000348713A JP2000348713A JP11156133A JP15613399A JP2000348713A JP 2000348713 A JP2000348713 A JP 2000348713A JP 11156133 A JP11156133 A JP 11156133A JP 15613399 A JP15613399 A JP 15613399A JP 2000348713 A JP2000348713 A JP 2000348713A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- kneaded
- added
- thickener
- battery
- 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
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池用正極合剤、
例えばリチウム二次電池に用いるペースト状の正極合剤
を製造する方法の技術およびこの正極合剤を用いた電池
用正極板の技術に関するものである。The present invention relates to a positive electrode mixture for a battery,
For example, the present invention relates to a technique for producing a paste-like positive electrode mixture used for a lithium secondary battery and a technique for a battery positive electrode plate using the positive electrode mixture.
【０００２】[0002]
【従来の技術】一般的に電池の正極板は、活物質に導電
剤、結着剤および増粘剤を均一に高分散させて混練した
高品質のペースト状の正極合剤を、アルミニウム箔のよ
うな集電体の両面に塗布し、乾燥して形成している。2. Description of the Related Art In general, a positive electrode plate of a battery is made of a high-quality paste-like positive electrode mixture obtained by uniformly and highly dispersing a conductive agent, a binder, and a thickener in an active material and kneading the mixture with an aluminum foil. It is applied to both sides of such a current collector and dried to form.
【０００３】そして、高分散されたペーストを得るため
に、従来では、活物質と導電剤と結着剤とを、これらを
均一に分散させる作用をする増粘剤の溶液に添加して練
合する工程と、この練合したものを所定時間放置してそ
の粘性を増大させて増粘する工程と、この増粘されたも
のを再び練合して調整する工程とを有する製造方法が提
案されている（例えば、特開平９−２０４９１７号公報
参照）。また、高分散されたペースト状にするために、
増粘剤の溶液に予め結着剤を分散させた分散液に、活物
質および導電剤を添加して練合分散させる方法が提案さ
れている（例えば、特開平８−１９５２０１号公報参
照）。[0003] In order to obtain a highly dispersed paste, conventionally, an active material, a conductive agent, and a binder are added to a solution of a thickener that acts to uniformly disperse them, and kneaded. A step of increasing the viscosity of the kneaded product by allowing the kneaded product to stand for a predetermined time to increase the viscosity thereof, and a process of kneading and adjusting the thickened product again. (See, for example, Japanese Patent Application Laid-Open No. 9-204917). Also, in order to make a highly dispersed paste,
There has been proposed a method in which an active material and a conductive agent are added to a dispersion obtained by dispersing a binder in a solution of a thickener in advance and kneaded and dispersed (for example, see JP-A-8-195201).
【０００４】[0004]
【発明が解決しようとする課題】従来における前者の電
池用正極合剤の製造方法にあっては、増粘する工程では
練合したものを放置するための容器が必要になり、後者
の電池用正極合剤の製造方法にあっては、結着剤を予め
分散させておく混合装置が必要になるなど複数の設備を
備える必要があり、工程が複雑になるという問題点があ
った。さらに、後者の電池用正極合剤の製造方法にあっ
ては、所定量の増粘剤が一度に添加された状態で練合す
るので、活物質および導電剤との馴染みが悪くなって練
合に長時間を要し、また、粉状の活物質および導電剤
は、その表面は濡れるが内部までは充分に濡れ難いの
で、乾いた状態の凝集塊として残存し、不均一に分散さ
れた、いわゆる継子状になったペースト状の正極合剤が
得られるという問題点があった。その上、凝集塊が残存
しているペースト状の正極合剤を集電体の両面に塗布す
ると、塗工スジによる不良部分が発生して平滑で良好な
正極合剤の塗膜が得られ難く、優れた電池性能が得られ
ないという問題点もあった。In the former method of producing a positive electrode mixture for a battery, a step of increasing the viscosity requires a container for allowing the kneaded material to stand, and the latter method for producing a positive electrode mixture for a battery. In the method for producing the positive electrode mixture, a plurality of facilities must be provided, such as a mixing device for dispersing the binder in advance, and the process is complicated. Furthermore, in the latter method for producing a positive electrode mixture for a battery, kneading is performed in a state where a predetermined amount of a thickener is added at a time, so that the mixing with the active material and the conductive agent is deteriorated, and the kneading is performed. It takes a long time, and the powdered active material and the conductive agent are wetted on the surface but hardly wet up to the inside, so they remain as dry aggregates and are unevenly dispersed. There was a problem that a so-called stepped paste-like positive electrode mixture was obtained. In addition, when a paste-like positive electrode mixture in which agglomerates remain is applied to both surfaces of the current collector, a defective portion due to a coating streak occurs, and it is difficult to obtain a smooth and good coating film of the positive electrode mixture. Also, there was a problem that excellent battery performance could not be obtained.
【０００５】[0005]
【課題を解決するための手段】上記問題点を解決するた
めに、本発明の電池用正極合剤の製造方法においては、
活物質と導電剤とに、増粘剤を少なくとも２回以上に分
割して添加し、練合し、ついで結着剤を添加して練合す
るもので、練合する際の増粘剤の添加量を規制して活物
質と導電剤と増粘剤との粉体−液体充填状態を、まずフ
ァニキュラー状態にして固練りの練合をし、ついで増粘
剤を追加して添加することにより粉体−液体充填状態を
スラリー状態に希釈分散させて練合したのち、結着剤を
添加して練合することにより正極合剤を調整することと
し、また、このようにして調整した正極合剤を集電体の
表面に塗着して正極板を形成することとしている。Means for Solving the Problems To solve the above problems, a method for producing a positive electrode mixture for a battery according to the present invention comprises:
In the active material and the conductive agent, a thickener is added at least twice or more, kneaded, and then a binder is added and kneaded. The powder-liquid filling state of the active material, the conductive agent, and the thickener is regulated by regulating the amount of addition, and the mixture is first kneaded in a stiffening state, and then the thickener is added. After the powder-liquid filling state is diluted and dispersed into a slurry state and kneaded, a binder is added and kneaded to adjust the positive electrode mixture, and the positive electrode thus adjusted is also adjusted. The mixture is applied to the surface of the current collector to form a positive electrode plate.
【０００６】そして、ファニキュラー状態では、適度に
水分を含み、粘度が比較的高い状態にあるので、この状
態で練合すると、増粘剤が良く馴染み、しかも粒子間に
強い剪断作用が働いて活物質および導電剤の凝集塊が短
時間で分散されて残存することがなくなり、均一に分散
させた状態に練合することができる。つぎに、増粘剤の
添加量を所定量にするために添加する増粘剤により希釈
分散させ、スラリー状態にして練合することにより、均
一に分散練合された正極合剤が得られ、この正極合剤を
用いた電池用正極板は電池性能に優れたものとなる。[0006] In the funicular state, since the water contains a moderate amount of water and has a relatively high viscosity, when kneaded in this state, the thickener is well adapted and a strong shearing action acts between the particles. Aggregates of the active material and the conductive agent are dispersed in a short period of time and do not remain, and can be kneaded in a state of being uniformly dispersed. Next, by diluting and dispersing with a thickener to be added to make the amount of the thickener to be a predetermined amount, and kneading in a slurry state, a uniformly dispersed and kneaded positive electrode mixture is obtained, A battery positive electrode plate using this positive electrode mixture has excellent battery performance.
【０００７】[0007]
【発明の実施の形態】本発明の電池用正極合剤の製造方
法においては、活物質と導電剤とに、増粘剤を少なくと
も２回以上に分割して添加し、練合し、ついで結着剤を
添加して練合することとし、特に、活物質と導電剤と増
粘剤との粉体−液体充填状態をファニキュラー状態にし
て練合する固練り工程、および、活物質と導電剤と増粘
剤との粉体−液体充填状態をスラリー状態にして練合す
る希釈分散工程とにより活物質と導電剤と増粘剤とを均
一に練合したのち、結着剤を添加して練合するものであ
る。BEST MODE FOR CARRYING OUT THE INVENTION In the method for producing a positive electrode mixture for a battery according to the present invention, a thickener is added to the active material and the conductive agent at least twice at a time, kneaded, and then kneaded. A kneading process in which the powder-liquid filling state of the active material, the conductive agent and the thickener is kneaded in a funicular state, and the active material and the conductive material are mixed. The active material, the conductive agent and the thickener are uniformly kneaded by a dilution / dispersion step in which the powder-liquid filling state of the agent and the thickener is kneaded in a slurry state, and then the binder is added. And knead it.
【０００８】粉状の活物質および導電剤と、液状の増粘
剤とを練合する場合の粉体−液体充填状態は、液体の含
有率により表１に示すようなペンデュラー状態、ファニ
キュラー状態、キャピラリー状態、スラリー状態の４状
態を形成する。When the powdered active material and the conductive agent are kneaded with the liquid thickener, the powder-liquid filling state depends on the liquid content, as shown in Table 1 in a pendular state or a funicular state. , A capillary state, and a slurry state.
【０００９】粉体−液体充填相には粉体相と液体相と気
体相との３相が存在するが、液体の充填量が少ない場合
は、粉体相間に気体が充填されているので、液体相は不
連続となり、液体の充填量が増大するにしたがって粉体
相間に液体が充填されてくるので、気体相は不連続相と
なり、ついで消失する。そして、ファニキュラー状態で
は、充填相に気体相、液体相、粉体相の３相が存在し、
液体相および粉体相は連続相になっているが、液体の充
填量により気体相は連続相もしくは不連続相になって粘
度が高い状態にある。また、スラリー状態では、液体相
は連続相になっているが、粉体相は不連続相で気体相は
消失しており、粘度が低い状態になっている。The powder-liquid filling phase has three phases: a powder phase, a liquid phase, and a gas phase. When the filling amount of the liquid is small, a gas is filled between the powder phases. The liquid phase becomes discontinuous, and the liquid is filled between the powder phases as the filling amount of the liquid increases, so that the gas phase becomes a discontinuous phase and then disappears. And, in the funicular state, there are three phases of a gas phase, a liquid phase, and a powder phase in the filling phase,
The liquid phase and the powder phase are continuous phases, but the gas phase becomes a continuous phase or a discontinuous phase depending on the filling amount of the liquid and has a high viscosity. In the slurry state, the liquid phase is a continuous phase, but the powder phase is a discontinuous phase, the gas phase has disappeared, and the viscosity is low.
【００１０】[0010]
【表１】 [Table 1]
【００１１】そして、活物質と導電剤と増粘剤との混合
物は、粉体−液体充填状態のファニキュラー状態では、
適度に水分を含み、粘度が比較的高い状態にあるので、
この状態で練合すると、活物質と導電剤とは、これらを
均一に分散させる目的で添加する増粘剤と良く馴染んで
均一に分散された状態で練合することができる。しか
も、適度に水分を含んで比較的粘度が高いファニキュラ
ー状態で練合すると固練りとなり、活物質粒子間および
導電剤粒子間に強い剪断作用が働くので、活物質および
導電剤の凝集塊が発生しても短時間で崩壊し、分散して
残存することがなくなり、均一に分散された状態で練合
することができる。さらに、増粘剤の添加量を所定量に
するために増粘剤を追加して添加することにより、希釈
分散されたスラリー状態で練合することになり、均一に
分散されて練合された良好な電池性能を示す正極合剤を
得ることができる。Then, the mixture of the active material, the conductive agent and the thickener is in a powdery-liquid filled state in a funicular state.
Since it contains a moderate amount of water and has a relatively high viscosity,
If kneaded in this state, the active material and the conductive agent can be kneaded in a state in which they are well dispersed and uniformly dispersed with the thickener added for the purpose of uniformly dispersing them. Moreover, when kneaded in a relatively high-viscosity funicular state containing a moderate amount of water, the mixture becomes stiff, and a strong shearing action acts between the active material particles and between the conductive agent particles. Even if it occurs, it disintegrates in a short time, does not remain dispersed and can be kneaded in a uniformly dispersed state. Furthermore, by adding a thickener in order to make the addition amount of the thickener a predetermined amount, kneading is performed in a slurry state that is diluted and dispersed, and is uniformly dispersed and kneaded. A positive electrode mixture showing good battery performance can be obtained.
【００１２】また、固練り工程では、増粘剤を複数回に
分割して添加すると、その都度に練合することになり、
均一に分散された練合状態にする上で効果的であり、そ
の分割の回数は７回を限度としてそれ以下が好ましい。
それは、増粘剤を分割して添加する場合、８回以上に分
割して添加すると練合する回数も８回以上となるので、
練合時間が長くなり、また、増粘剤の添加量の計量ばら
つきが大きくなって生産性および計量性が低下して好ま
しくないからである。In the kneading step, when the thickener is divided and added plural times, the thickening agent is kneaded each time.
This is effective in forming a uniformly dispersed kneaded state, and the number of divisions is preferably up to seven times or less.
That is, when the thickener is dividedly added, the number of times of kneading becomes eight or more when dividedly added eight or more times,
This is because the kneading time becomes longer, and the measurement variation of the amount of the thickener added becomes large, thereby lowering the productivity and the measurement property, which is not preferable.
【００１３】さらに、固練り工程で分割して添加する増
粘剤の総量ΣＶN［ｍ3］は、活物質の比表面積をＳａ
［ｍ2／Ｋｇ］、活物質の質量をＷａ［Ｋｇ］、導電剤
の比表面積をＳｄ［ｍ2／Ｋｇ］、導電剤の質量をＷｄ
［Ｋｇ］とした場合、式１で示される関係を満す範囲に
するのが効果的である。Further, the total amount of thickener ΔV N [m 3 ] to be divided and added in the stiffening step is such that the specific surface area of the active material is Sa.
[M 2 / Kg], the mass of the active material is Wa [Kg], the specific surface area of the conductive agent is Sd [m 2 / Kg], and the mass of the conductive agent is Wd.
When [Kg] is set, it is effective to set the range that satisfies the relationship represented by Expression 1.
【００１４】[0014]
【数２】 (Equation 2)
【００１５】それは、固練り工程で分割して添加する増
粘剤の総量ΣＶN［ｍ3］が、３×１０-8×（Ｓａ・Ｗａ
＋Ｓｄ・Ｗｄ）以下であると、液体相が少なすぎるため
に剪断力が強く作用して活物質や導電剤に破壊が発生
し、これら粒子の活性面が露出して再凝集し易くなり、
また、１．７×１０-7×（Ｓａ・Ｗａ＋Ｓｄ・Ｗｄ）以
上であると、ファニキュラー状態を越えるため、これら
粒子の凝集塊に剪断力が充分に作用しなくなり、凝集塊
を短時間で崩壊し、分散させる効果が得られなくなって
好ましくないからである。The total amount of the thickener ΔV N [m 3 ] divided and added in the kneading step is 3 × 10 −8 × (Sa · Wa).
If it is less than + Sd · Wd), the liquid phase is too small, so that the shearing force acts so strongly that the active material and the conductive agent are destroyed, and the active surfaces of these particles are exposed and easily re-agglomerated,
If the ratio is more than 1.7 × 10 −7 × (Sa · Wa + Sd · Wd), the shearing force will not sufficiently act on the aggregates of these particles because the particles exceed the funicular state. This is because it is not preferable because the effect of disintegration and dispersion cannot be obtained.
【００１６】つぎに、固練り工程で増粘剤を分割して添
加する場合の増粘剤の添加量の決定について説明する。
なお、ここでは３回に分割して添加する場合を例に説明
する。Next, the determination of the amount of the thickener to be added when the thickener is dividedly added in the kneading step will be described.
Here, the case of adding three times is described as an example.
【００１７】第１回の添加量Ｖ1［ｍ3］は、式２で示さ
れる関係を満す範囲で決定して添加し、練合したのち、
第２回の添加量Ｖ2［ｍ3］は、第１回の添加量Ｖ
1［ｍ3］との合計が式３で示される関係を満す範囲で決
定して添加し、練合し、ついで、第３回の添加量Ｖ
3［ｍ3］は、第１回の添加量Ｖ1［ｍ3］および第２回の
添加量Ｖ 2［ｍ3］との合計が式４で示される関係を満す
範囲で決定して添加し、練合する。The first addition amount V1[MThree] Is shown in Equation 2.
Determined and added within a range that satisfies the relationship
Second addition amount VTwo[MThree] Is the first addition amount V
1[MThreeIs determined within a range that satisfies the relationship shown in Equation 3.
And then kneaded, then the third addition amount V
Three[MThree] Is the first addition amount V1[MThree] And the second
Addition amount V Two[MThreeSatisfies the relationship shown in Equation 4.
Add in a range determined and kneaded.
【００１８】[0018]
【数３】 (Equation 3)
【００１９】[0019]
【数４】 (Equation 4)
【００２０】[0020]
【数５】 (Equation 5)
【００２１】前記固練り工程後、さらに、増粘剤を添加
してスラリー状態にして練合し、ついで結着剤を添加し
て練合し、ペースト状の電池用正極合剤を得る。その合
剤を集電体の表面に塗着することにより電池性能に優れ
た電池用正極板を提供することができる。After the solidifying step, a thickener is further added to form a slurry, and the mixture is kneaded. Then, a binder is added and kneaded to obtain a paste-like positive electrode mixture for a battery. By coating the mixture on the surface of the current collector, a positive electrode plate for a battery having excellent battery performance can be provided.
【００２２】本発明で用いる活物質としては、特に限定
されるものではないが、例えば、ＭｎＯ2、Ｖ2Ｏ5、Ｖ6
Ｏ13などの金属酸化物、ＴｉＳ2、ＭｏＳ2、ＦｅＳなど
の金属硫化物、ＬｉＣｏＯ2、ＬｉＮｉＯ2、ＬｉＭｎＯ
4などのＣｏ、Ｎｉ、Ｍｎ、Ｆｅ、Ｔｉなどの遷移金属
を主成分とするリチウム複合金属酸化物などがある。The active material used in the present invention is not particularly limited. For example, MnO 2 , V 2 O 5 , V 6
Metal oxides such as O 13 , metal sulfides such as TiS 2 , MoS 2 and FeS, LiCoO 2 , LiNiO 2 , LiMnO
For example, a lithium composite metal oxide containing a transition metal such as Co, Ni, Mn, Fe, and Ti as a main component.
【００２３】また、用いる増粘剤としては、例えば、カ
ルボキシメチルセルロース（Ｌｉ、Ｎａ、Ｋ、ＮＨ
4塩）、あるいはこれらの何れかを主成分としたメチル
セルロース、エチルセルロース、ヒドロキシメチルセル
ロース、ポリビニルアルコール、酸化スターチ、燐酸ス
ターチなどの１種または２種以上の混合物がある。As the thickener used, for example, carboxymethylcellulose (Li, Na, K, NH
(4 salts), or one or a mixture of two or more such as methylcellulose, ethylcellulose, hydroxymethylcellulose, polyvinyl alcohol, oxidized starch, and starch phosphate containing any of these as a main component.
【００２４】また、結着剤としては、多糖類、熱可塑性
樹脂、ゴム弾性を有するポリマーを単独またはこれらの
混合物を用いることができる。例えば、エチレン樹脂不
飽和モノマーの重合体、ポリエステル、ポリウレタン、
ポリエーテル、ポリアミド、ポリウレア、ポリシロキサ
ン、ポリカーボネート、エポキシ樹脂、フェノール樹
脂、セルロース類、糖類および糖類誘導体などがある。
好ましい例としては、ポリテトラフルオロエチレン（Ｐ
ＴＦＥ）、ポリ弗化ビニリデン、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、ポリエチレ
ン、ポリプロピレン、エチレン／プロピレン／環状ジエ
ンポリマー（ＥＰＤＭ）、スチレン／ブタジエン共重合
体（ＳＢＲ）、ポリメタクリル酸メチル、ポリ酢酸ビニ
ル、ポリアクリル酸、ポリビニルアルコール、ポリビニ
ルピロリドン、ポリメチルビニルエーテル、ポリアクリ
ルアミド、ポリヒドロキシエチルメタクリレート、ポリ
エチレンアジペート、ポリビニルアセタール、ポリビニ
ルブチラールのようなエチレン性不飽和モノマーの重合
体、ヘキサメチレンジイソシアネート／ブタンジオール
縮合体のようなポリウレア、ポリエチレンオキサイド、
ポリプロピレンオキサイドのようなポリエーテル、ポリ
ジメチルシロオキサンのようなポリシロキサン、ビスフ
ェノールＡ／エピクロルヒドリン付加重合体のようなエ
ポキシ樹脂、フェノール／ホルマリン縮合体のようなフ
ェノール樹脂、アルギン酸、キチン、キトサン、アガロ
ース、ゼラチンのような糖類ならびにその誘導体、およ
びカルボキシメチルセルロース、酢酸セルロース、ヒド
ロキシプロピルセルロースのようなセルロース類などが
ある。また、上記エチレン性不飽和モノマーの重合体例
を構成するモノマーと他のモノマーとの共重合体でもよ
い。As the binder, a polysaccharide, a thermoplastic resin, or a polymer having rubber elasticity can be used alone or in a mixture thereof. For example, polymers of ethylenically unsaturated monomers, polyesters, polyurethanes,
Examples include polyether, polyamide, polyurea, polysiloxane, polycarbonate, epoxy resin, phenolic resin, celluloses, saccharides and saccharide derivatives.
A preferred example is polytetrafluoroethylene (P
TFE), polyvinylidene fluoride, tetrafluoroethylene / hexafluoropropylene copolymer, polyethylene, polypropylene, ethylene / propylene / cyclic diene polymer (EPDM), styrene / butadiene copolymer (SBR), polymethyl methacrylate, poly Polymers of ethylenically unsaturated monomers such as vinyl acetate, polyacrylic acid, polyvinyl alcohol, polyvinyl pyrrolidone, polymethyl vinyl ether, polyacrylamide, polyhydroxyethyl methacrylate, polyethylene adipate, polyvinyl acetal, polyvinyl butyral, hexamethylene diisocyanate / butane Polyurea such as diol condensate, polyethylene oxide,
Polyether such as polypropylene oxide, polysiloxane such as polydimethylsiloxane, epoxy resin such as bisphenol A / epichlorohydrin addition polymer, phenol resin such as phenol / formalin condensate, alginic acid, chitin, chitosan, agarose, There are sugars such as gelatin and derivatives thereof, and celluloses such as carboxymethylcellulose, cellulose acetate and hydroxypropylcellulose. Further, a copolymer of a monomer constituting the polymer example of the above-mentioned ethylenically unsaturated monomer and another monomer may be used.
【００２５】さらに、上記に例示した結着剤は単独で使
用しても２種以上を混合して使用してもよい。結着剤を
溶媒中に添加するときの形態は、粉末状、溶液状、ある
いはディスパージョン、エマルジョンのような分散状の
何れでもよい。結着剤の添加量は、導電剤などを添加し
た活物質合剤の全重量に対して０．１〜２０重量％が好
ましく、特に０．５〜１０重量％が好ましい。結着剤の
添加量が０．１重量％以下であると芯材となる集電体と
の結着性が悪くなり、２０重量％以上であると結着剤が
多すぎて電池容量が低下して好ましくない。Further, the above-mentioned binders may be used alone or in combination of two or more. The form in which the binder is added to the solvent may be any of powder, solution, and dispersion such as dispersion and emulsion. The addition amount of the binder is preferably from 0.1 to 20% by weight, particularly preferably from 0.5 to 10% by weight, based on the total weight of the active material mixture to which the conductive agent and the like have been added. When the amount of the binder is 0.1% by weight or less, the binding property with the current collector serving as the core material is deteriorated. When the amount is 20% by weight or more, the amount of the binder is too large and the battery capacity is reduced. Is not preferred.
【００２６】また、導電剤としては、構成される電池に
おいて化学変化を起こさない電子伝導性材料であれば用
いることができ、通常は、鱗状黒鉛、鱗片状黒鉛、土状
黒鉛などの天然黒鉛、あるいは、人工黒鉛、カーボンブ
ラック、アセチレンブラック、ケッチェンブラックなど
の導電性材料を単独またはこれらの混合物として用いる
ことができる。As the conductive agent, any electronic conductive material that does not cause a chemical change in the battery to be constituted can be used. Usually, natural graphite such as flaky graphite, flaky graphite, earthy graphite and the like can be used. Alternatively, conductive materials such as artificial graphite, carbon black, acetylene black, and Ketjen black can be used alone or as a mixture thereof.
【００２７】練合して分散させるのに用いる練合装置と
しては、パドル型混合機、リボン混合機、遊星運動形混
合機、スクリュー形混合機、高速流動形混合機、水平単
軸形混練機、水平複軸混練機などがある。具体的には、
縦型リボン形混合機、横型リボン形混合機、縦型スクリ
ュー形混合機、横型スクリュー形混合機、ボールミル、
ピンミキサー、双腕形ニーダ、加圧ニーダ、サンドグラ
インダー、万能ミキサなどを用いることができる。The kneading device used for kneading and dispersing includes a paddle type mixer, a ribbon mixer, a planetary mixer, a screw mixer, a high-speed fluid mixer, a horizontal single-shaft mixer. And a horizontal double-shaft kneader. In particular,
Vertical ribbon mixer, horizontal ribbon mixer, vertical screw mixer, horizontal screw mixer, ball mill,
A pin mixer, a double-arm kneader, a pressure kneader, a sand grinder, a universal mixer, or the like can be used.
【００２８】[0028]
【実施例】その実施例を、図１に示すような万能ミキサ
を練合装置として用い、活物質、導電剤、増粘剤、結着
剤などの混合物を練合することにより、リチウム二次電
池の正極板に用いる活物質のペースト状の合剤を製造す
る場合について詳述する。EXAMPLE The lithium secondary battery was manufactured by kneading a mixture of an active material, a conductive agent, a thickener, and a binder using a universal mixer as shown in FIG. 1 as a kneading apparatus. The case of producing a paste-like mixture of an active material used for a positive electrode plate of a battery will be described in detail.
【００２９】練合装置として用いる万能ミキサを説明す
る図１において、１は練合機、２は練合機１により駆動
されて混合物を撹拌して練合する撹拌翼、３はスクレー
バ、４は混合物を投入する釜、５は釜４内で練合した混
練物を取り出すホース６に設けたバルブである。In FIG. 1, which illustrates a universal mixer used as a kneading apparatus, 1 is a kneading machine, 2 is a stirring blade driven by the kneading machine 1 to stir and knead the mixture, 3 is a scraper, and 4 is a scraper. The kettle 5 for charging the mixture and the valves 5 provided on the hose 6 for taking out the kneaded material kneaded in the kettle 4.
【００３０】（実施例１）活物質として比表面積Ｓａが
４．５×１０2ｍ2／ＫｇのＬｉＣｏＯ2粉末を１００Ｋ
ｇ、導電剤として比表面積Ｓｄが７．０×１０4ｍ2／Ｋ
ｇのアセチレンブラックを３Ｋｇ、結着剤としてポリテ
トラフルオロエチレンの５０重量部水溶液を１５Ｋｇ、
増粘剤としてカルボキシメチルセルロースの１重量部水
溶液を５０Ｋｇ用い、固練り工程での練合は１回行うこ
とにして正極のペースト状合剤を調整する。(Example 1) LiCoO 2 powder having a specific surface area Sa of 4.5 × 10 2 m 2 / Kg was used as an active material at 100K.
g, specific surface area Sd as conductive agent is 7.0 × 10 4 m 2 / K
g of acetylene black, 15 kg of a 50 parts by weight aqueous solution of polytetrafluoroethylene as a binder,
50 kg of an aqueous solution of 1 part by weight of carboxymethylcellulose is used as a thickener, and the kneading in the solidifying step is performed once to prepare a paste mixture for the positive electrode.
【００３１】まず、固練り工程では、ＬｉＣｏＯ2粉末
１００Ｋｇと、アセチレンブラック３Ｋｇと、カルボキ
シメチルセルロース水溶液３０Ｋｇとを釜４に投入し、
撹拌翼２の回転数を１００ｒｐｍとして１２分間練合し
たのち希釈分散工程へ移行する。なお、カルボキシメチ
ルセルロース水溶液の比重を１．１とすると、増粘剤の
添加量Ｖ1は２．７×１０-2ｍ3となる。First, in the kneading step, 100 kg of LiCoO 2 powder, 3 kg of acetylene black and 30 kg of carboxymethylcellulose aqueous solution are charged into the kettle 4.
After the kneading is performed for 12 minutes with the rotation speed of the stirring blade 2 set to 100 rpm, the process proceeds to the dilution dispersion process. Incidentally, when the 1.1 specific gravity of carboxymethylcellulose aqueous solution, the amount V 1 of the thickener becomes 2.7 × 10 -2 m 3.
【００３２】つぎに、希釈分散工程では、固練り工程で
練合した混練物に、残りのカルボキシメチルセルロース
水溶液２０Ｋｇを添加して希釈分散させ、撹拌翼２の回
転数を１００ｒｐｍとし、さらに１５分間練合する。そ
の後、ポリテトラフルオロエチレン水溶液を１５Ｋｇ添
加し、撹拌翼２の回転数を１００ｒｐｍとし、さらに３
分間練合して正極のペースト状合剤を調整する。Next, in the dilution and dispersion step, the remaining 20 kg of the aqueous carboxymethyl cellulose solution is added to the kneaded mixture kneaded in the solidification and kneading step to dilute and disperse the mixture. The rotation speed of the stirring blade 2 is set to 100 rpm, and the mixture is further kneaded for 15 minutes. Combine. Thereafter, 15 kg of an aqueous solution of polytetrafluoroethylene was added, the rotation speed of the stirring blade 2 was set to 100 rpm, and
The mixture is kneaded for a few minutes to prepare a paste mixture for the positive electrode.
【００３３】このようにして調整したペースト状の正極
合剤を、厚さ２０μｍのアルミニウム箔の表面上にダイ
コーターにより塗布し、ついで乾燥してリチウム二次電
池用正極板を形成させる。なお、ダイコーターによる塗
布条件は、乾燥温度を１２０℃、塗布速度を１５ｍ／分
として行った。The paste-like positive electrode mixture thus prepared is applied to the surface of an aluminum foil having a thickness of 20 μm by a die coater, and then dried to form a positive electrode plate for a lithium secondary battery. The application by the die coater was performed at a drying temperature of 120 ° C. and an application speed of 15 m / min.
【００３４】（実施例２）実施例１の場合と同じ条件で
活物質、導電剤、増粘剤、結着剤を用い、固練り工程で
は、カルボキシメチルセルロースの１重量部水溶液を１
０Ｋｇづつ３回に分割して添加し、その都度練合して３
回の練合を行った。なお、固練り工程でのカルボキシメ
チルセルロースの１重量部水溶液の添加総量は、実施例
１の場合と同じ３０Ｋｇである。(Example 2) Under the same conditions as in Example 1, an active material, a conductive agent, a thickener, and a binder were used.
Add 0 Kg in three portions and knead each time.
Kneading was performed. The total addition amount of the 1 part by weight aqueous solution of carboxymethyl cellulose in the stiffening step is 30 kg, which is the same as in Example 1.
【００３５】第１回目の固練り工程では、ＬｉＣｏＯ2
粉末１００Ｋｇと、アセチレンブラック３Ｋｇと、カル
ボキシメチルセルロースの１重量部水溶液１０Ｋｇとを
釜４に投入し、撹拌翼２の回転数を１００ｒｐｍとして
４分間練合して第２回目の固練り工程へ移行する。な
お、カルボキシメチルセルロース水溶液の比重を１．１
とすると、増粘剤の添加量Ｖ1は９．１×１０-3ｍ3とな
る。In the first stiffening step, LiCoO 2
100 kg of powder, 3 kg of acetylene black, and 10 kg of an aqueous solution of 1 part by weight of carboxymethylcellulose are charged into the kettle 4, and the number of revolutions of the stirring blade 2 is set to 100 rpm, and the mixture is kneaded for 4 minutes, and the process proceeds to the second kneading step. . The specific gravity of the aqueous carboxymethyl cellulose solution was 1.1
Then, the added amount V 1 of the thickener is 9.1 × 10 −3 m 3 .
【００３６】第２回目の固練り工程では、カルボキシメ
チルセルロース水溶液１０Ｋｇを添加し、撹拌翼２の回
転数を１００ｒｐｍとして４分間練合して第３回目の固
練り工程へ移行する。なお、カルボキシメチルセルロー
ス水溶液の比重を１．１とすると、増粘剤の総添加量
（Ｖ1＋Ｖ2）は１．８×１０-2ｍ3となる。In the second kneading step, 10 kg of an aqueous solution of carboxymethylcellulose is added, and the number of revolutions of the stirring blade 2 is set to 100 rpm, and the mixture is kneaded for 4 minutes, and the process proceeds to the third kneading step. When the specific gravity of the aqueous carboxymethyl cellulose solution is 1.1, the total amount of the thickener (V 1 + V 2 ) is 1.8 × 10 −2 m 3 .
【００３７】第３回目の固練り工程では、カルボキシメ
チルセルロース水溶液１０Ｋｇを添加し、撹拌翼２の回
転数を１００ｒｐｍとして４分間練合して希釈分散工程
へ移行する。なお、カルボキシメチルセルロース水溶液
の比重を１．１とすると、増粘剤の総添加量（Ｖ1＋Ｖ2
＋Ｖ3）は２．７×１０-2ｍ3となる。希釈分散工程以降
の処理は、実施例１の場合と同じにしている。In the third kneading step, 10 kg of an aqueous carboxymethylcellulose solution is added, the mixture is kneaded for 4 minutes with the rotation speed of the stirring blade 2 at 100 rpm, and the process proceeds to the diluting and dispersing step. Assuming that the specific gravity of the carboxymethylcellulose aqueous solution is 1.1, the total amount of the thickener (V 1 + V 2
+ V 3 ) is 2.7 × 10 −2 m 3 . The processing after the dilution and dispersion step is the same as that in the first embodiment.
【００３８】（比較例）実施例１の場合と同じ条件で活
物質、導電剤、増粘剤、結着剤を用い、固練り工程およ
び希釈分散工程を経ずに増粘剤は一度に所定量を添加し
て調整した。(Comparative Example) Using the active material, the conductive agent, the thickener, and the binder under the same conditions as in Example 1, the thickener was added at once without going through the kneading step and the dilution / dispersion step. Quantitation was added and adjusted.
【００３９】ＬｉＣｏＯ2粉末１００Ｋｇと、アセチレ
ンブラック３Ｋｇと、カルボキシメチルセルロースの１
重量部水溶液５０Ｋｇとを釜４に投入し、撹拌翼２の回
転数を１００ｒｐｍとして９０分間練合したのち、ポリ
テトラフルオロエチレンの５０重量部水溶液を１５Ｋｇ
添加し、実施例１の場合と同様な処理をした。100 kg of LiCoO 2 powder, 3 kg of acetylene black and 1 kg of carboxymethyl cellulose
50 kg of an aqueous solution of 50 parts by weight of a polytetrafluoroethylene is charged into the kettle 4 and kneaded for 90 minutes at a rotation speed of the stirring blade 2 of 100 rpm.
And the same treatment as in Example 1 was performed.
【００４０】以上説明した実施例１、２および比較例に
よるリチウム二次電池用正極板の表面１０００ｃｍ2に
存在するＬｉＣｏＯ2およびアセチレンブラック（カー
ボン）の凝集塊の数を目視により計測した結果は表２に
示す通りで、比較例のように増粘剤を一度で添加するの
ではなく、実施例のように分割して添加し、その都度練
合することにより、凝集塊の発生を極度に減少させるこ
とができる。The number of agglomerates of LiCoO 2 and acetylene black (carbon) present on the surface of 1000 cm 2 of the positive electrode plates for lithium secondary batteries according to Examples 1 and 2 and Comparative Example described above was visually measured. As shown in Fig. 2, instead of adding the thickener all at once as in the comparative example, the thickener is divided and added as in the examples, and kneading is performed each time, thereby extremely reducing the occurrence of aggregates. Can be done.
【００４１】[0041]
【表２】 [Table 2]
【００４２】[0042]
【発明の効果】本発明は、以上説明したような形態で実
施され、以下に記載されるような効果を奏する。The present invention is embodied in the form described above and has the following effects.
【００４３】増粘剤を分割して添加し、その都度、練合
することにより、活物質などが凝集してできる塊の発生
がなくなり、短時間で均一に分散練合されたペースト状
の正極合剤を調整することができ、このペースト状の正
極合剤を集電体の表面に塗布して乾燥し、正極板を形成
した場合、塗工スジおよび凝集塊のない良好な正極塗膜
が得られ、電池性能に優れた正極板を歩留まりよく、生
産性よく提供することができる。By adding the thickener in portions and kneading each time, the formation of agglomerates formed by aggregation of the active material and the like is eliminated, and the paste-like positive electrode dispersed and kneaded uniformly in a short time The mixture can be adjusted.When the paste-like positive electrode mixture is applied to the surface of the current collector and dried to form a positive electrode plate, a good positive electrode coating film without coating streaks and agglomerates is obtained. As a result, a positive electrode plate having excellent battery performance can be provided with high yield and high productivity.
【図１】本発明の実施例において用いる練合装置の説明
図FIG. 1 is an explanatory view of a kneading apparatus used in an embodiment of the present invention.
１ 練合機 ２ 撹拌翼 ４ 釜 1 kneading machine 2 stirring blade 4 pot
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村井 祐之 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 松野 博 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 大花 頼人 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 5H003 AA08 BA03 BB04 BB05 BB06 BB11 BD04 BD05 5H014 AA02 AA04 BB06 BB08 EE01 EE10 HH06 5H029 AJ14 AK03 CJ08 CJ22 CJ28 DJ08 EJ12 HJ07 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuyuki Murai 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Rinto Ohana 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) DJ08 EJ12 HJ07
Claims (6)
も２回以上に分割して添加し、練合し、ついで結着剤を
添加して練合する電池用正極合剤の製造方法。1. A method for producing a positive electrode mixture for a battery in which a thickener is added to an active material and a conductive agent at least twice in a divided manner, kneaded, and then a binder is added and kneaded. Method.
充填状態をファニキュラー状態にして練合する固練り工
程、および、活物質と導電剤と増粘剤との粉体−液体充
填状態をスラリー状態にして練合する希釈分散工程とに
より活物質と導電剤と増粘剤とを練合し、ついで結着剤
を添加して練合する電池用正極合剤の製造方法。2. A kneading step in which a powder-liquid filling state of an active material, a conductive agent, and a thickener is kneaded in a state of a funicular, and a powder of the active material, a conductive agent, and a thickener. -Production of a positive electrode mixture for a battery in which the active material, the conductive agent and the thickener are kneaded by a dilution dispersion step of kneading the liquid filling state into a slurry state, and then a binder is added and kneaded. Method.
して添加し、練合する請求項２記載の電池用正極合剤の
製造方法。3. The method for producing a positive electrode mixture for a battery according to claim 2, wherein in the kneading step, the thickener is added in a plurality of times and kneaded.
剤を分割して添加し、練合する請求項２または３記載の
電池用正極合剤の製造方法。4. The method for producing a positive electrode mixture for a battery according to claim 2, wherein, in the stiffening step, the thickener is divided and added up to seven times and kneaded.
N［ｍ3］を、式１で示される関係を満す範囲にする請求
項２ないし４のいずれかに記載の電池用正極合剤の製造
方法。 【数１】 5. The total amount of thickener added in the stiffening step ΔV
The N [m 3], the manufacturing method for a battery positive electrode material mixture according to any one of claims 2 to 4, the relationship of formula 1 in full to the range. (Equation 1)
てファニキュラー状態にして練合し、さらに、増粘剤を
添加してスラリー状態にして練合し、ついで結着剤を添
加して練合したペースト状の電池用正極合剤を集電体の
表面に塗着した電池用正極板。6. A thickener is added to an active material to which a conductive agent has been added, and the mixture is kneaded in a funicular state. Further, a thickener is added and kneaded in a slurry state. A positive electrode plate for a battery, in which a paste-like positive electrode mixture for a battery obtained by adding and kneading is coated on the surface of a current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15613399A JP4244445B2 (en) | 1999-06-03 | 1999-06-03 | Method for producing positive electrode mixture for battery and positive electrode plate for battery using this positive electrode mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15613399A JP4244445B2 (en) | 1999-06-03 | 1999-06-03 | Method for producing positive electrode mixture for battery and positive electrode plate for battery using this positive electrode mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000348713A true JP2000348713A (en) | 2000-12-15 |
| JP4244445B2 JP4244445B2 (en) | 2009-03-25 |
Family
ID=15621054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15613399A Expired - Fee Related JP4244445B2 (en) | 1999-06-03 | 1999-06-03 | Method for producing positive electrode mixture for battery and positive electrode plate for battery using this positive electrode mixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4244445B2 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1282182A2 (en) | 2001-08-02 | 2003-02-05 | Matsushita Electric Industrial Co., Ltd. | Positive electrode for non-aqueous electrolyte secondary battery and method of producing the same |
| WO2005001963A1 (en) * | 2003-06-27 | 2005-01-06 | Zeon Corporation | Active material for cathode film, polyether polymer composition for cathode film, cathode film, and method for producing cathode film |
| WO2005001964A1 (en) * | 2003-06-30 | 2005-01-06 | Zeon Corporation | Compounding agent composition for cathode film, polyether polymer composition for cathode film |
| JP2005085557A (en) * | 2003-09-05 | 2005-03-31 | Nippon Zeon Co Ltd | Manufacturing method of slurry composition for secondary lithium-ion battery electrode |
| JP2006024550A (en) * | 2004-06-07 | 2006-01-26 | Matsushita Electric Ind Co Ltd | Positive electrode plate for non-aqueous secondary battery and method for manufacturing the same |
| JP2006092760A (en) * | 2004-09-21 | 2006-04-06 | Matsushita Electric Ind Co Ltd | Method of manufacturing negative electrode plate for nonaqueous secondary battery |
| JP2006107896A (en) * | 2004-10-05 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Manufacturing method of electrode plate for negative electrode of nonaqueous secondary battery |
| US7662516B2 (en) | 2004-06-07 | 2010-02-16 | Panasonic Corporation | Electrode plate of positive electrode for non-aqueous electrolyte secondary battery and manufacturing method thereof |
| JP2010044871A (en) * | 2008-08-08 | 2010-02-25 | Panasonic Corp | Method of manufacturing slurry for electrode mixture |
| JP2011181387A (en) * | 2010-03-02 | 2011-09-15 | Toyo Ink Sc Holdings Co Ltd | Manufacturing method of electrode mixture for electrochemical element |
| JP4778526B2 (en) * | 2004-12-27 | 2011-09-21 | 深▲せん▼市比克電池有限公司 | Method for producing positive electrode sheet for lithium ion battery, and positive electrode sheet and lithium ion battery produced by the method |
| JP2011233380A (en) * | 2010-04-28 | 2011-11-17 | Asada Iron Works Co Ltd | Continuous production device and method for composition slurry containing electrode mixture for secondary battery |
| JP2012204061A (en) * | 2011-03-24 | 2012-10-22 | Toppan Printing Co Ltd | Positive electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, production method of positive electrode ink for nonaqueous electrolyte secondary battery, positive electrode ink for nonaqueous electrolyte secondary battery, and manufacturing method of positive electrode for nonaqueous electrolyte secondary battery |
| JP2013116990A (en) * | 2011-12-05 | 2013-06-13 | Toagosei Co Ltd | Method for producing water-based resin emulsion composition |
| JP2014041782A (en) * | 2012-08-23 | 2014-03-06 | Jtekt Corp | Device and method for kneading electricity storage material |
| CN103956455A (en) * | 2014-05-07 | 2014-07-30 | 东莞市安德丰电池有限公司 | Lithium electric positive and negative pole sizing agent low viscosity processing method |
| KR20170009097A (en) * | 2015-07-15 | 2017-01-25 | 주식회사 엘지화학 | Cathode improved conductivity and electrochemical device including the same |
| JP2020045462A (en) * | 2018-09-21 | 2020-03-26 | Fdk株式会社 | Method for producing coating material |
| CN115084441A (en) * | 2021-03-12 | 2022-09-20 | 泰星能源解决方案有限公司 | Method for manufacturing electrode for secondary battery, electrode, and secondary battery provided with electrode |
| WO2023182531A1 (en) * | 2022-03-25 | 2023-09-28 | 三菱ケミカル株式会社 | Organic-inorganic hybrid membrane, organic-inorganic hybrid membrane composite, gas separation and concentration method, gas separation membrane module, method for producing organic-inorganic hybrid membrane, and method for producing organic-inorganic hybrid membrane composite |
-
1999
- 1999-06-03 JP JP15613399A patent/JP4244445B2/en not_active Expired - Fee Related
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1282182A3 (en) * | 2001-08-02 | 2005-04-20 | Matsushita Electric Industrial Co., Ltd. | Positive electrode for non-aqueous electrolyte secondary battery and method of producing the same |
| US6942946B2 (en) | 2001-08-02 | 2005-09-13 | Matsushita Electric Industrial Co., Ltd. | Positive electrode for non-aqueous electrolyte secondary battery and method of producing the same |
| EP1282182A2 (en) | 2001-08-02 | 2003-02-05 | Matsushita Electric Industrial Co., Ltd. | Positive electrode for non-aqueous electrolyte secondary battery and method of producing the same |
| WO2005001963A1 (en) * | 2003-06-27 | 2005-01-06 | Zeon Corporation | Active material for cathode film, polyether polymer composition for cathode film, cathode film, and method for producing cathode film |
| WO2005001964A1 (en) * | 2003-06-30 | 2005-01-06 | Zeon Corporation | Compounding agent composition for cathode film, polyether polymer composition for cathode film |
| JP4608862B2 (en) * | 2003-09-05 | 2011-01-12 | 日本ゼオン株式会社 | Method for producing slurry composition for lithium ion secondary battery electrode |
| JP2005085557A (en) * | 2003-09-05 | 2005-03-31 | Nippon Zeon Co Ltd | Manufacturing method of slurry composition for secondary lithium-ion battery electrode |
| JP2006024550A (en) * | 2004-06-07 | 2006-01-26 | Matsushita Electric Ind Co Ltd | Positive electrode plate for non-aqueous secondary battery and method for manufacturing the same |
| US7662516B2 (en) | 2004-06-07 | 2010-02-16 | Panasonic Corporation | Electrode plate of positive electrode for non-aqueous electrolyte secondary battery and manufacturing method thereof |
| JP2006092760A (en) * | 2004-09-21 | 2006-04-06 | Matsushita Electric Ind Co Ltd | Method of manufacturing negative electrode plate for nonaqueous secondary battery |
| JP2006107896A (en) * | 2004-10-05 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Manufacturing method of electrode plate for negative electrode of nonaqueous secondary battery |
| JP4778526B2 (en) * | 2004-12-27 | 2011-09-21 | 深▲せん▼市比克電池有限公司 | Method for producing positive electrode sheet for lithium ion battery, and positive electrode sheet and lithium ion battery produced by the method |
| JP2010044871A (en) * | 2008-08-08 | 2010-02-25 | Panasonic Corp | Method of manufacturing slurry for electrode mixture |
| JP2011181387A (en) * | 2010-03-02 | 2011-09-15 | Toyo Ink Sc Holdings Co Ltd | Manufacturing method of electrode mixture for electrochemical element |
| JP2011233380A (en) * | 2010-04-28 | 2011-11-17 | Asada Iron Works Co Ltd | Continuous production device and method for composition slurry containing electrode mixture for secondary battery |
| JP2012204061A (en) * | 2011-03-24 | 2012-10-22 | Toppan Printing Co Ltd | Positive electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, production method of positive electrode ink for nonaqueous electrolyte secondary battery, positive electrode ink for nonaqueous electrolyte secondary battery, and manufacturing method of positive electrode for nonaqueous electrolyte secondary battery |
| JP2013116990A (en) * | 2011-12-05 | 2013-06-13 | Toagosei Co Ltd | Method for producing water-based resin emulsion composition |
| JP2014041782A (en) * | 2012-08-23 | 2014-03-06 | Jtekt Corp | Device and method for kneading electricity storage material |
| CN103956455A (en) * | 2014-05-07 | 2014-07-30 | 东莞市安德丰电池有限公司 | Lithium electric positive and negative pole sizing agent low viscosity processing method |
| CN103956455B (en) * | 2014-05-07 | 2016-04-27 | 东莞市安德丰电池有限公司 | A kind of lithium electricity positive and negative electrode slurry low viscosity processing method |
| KR20170009097A (en) * | 2015-07-15 | 2017-01-25 | 주식회사 엘지화학 | Cathode improved conductivity and electrochemical device including the same |
| JP2020045462A (en) * | 2018-09-21 | 2020-03-26 | Fdk株式会社 | Method for producing coating material |
| JP7141901B2 (en) | 2018-09-21 | 2022-09-26 | Fdk株式会社 | Manufacturing method of coating material |
| CN115084441A (en) * | 2021-03-12 | 2022-09-20 | 泰星能源解决方案有限公司 | Method for manufacturing electrode for secondary battery, electrode, and secondary battery provided with electrode |
| JP2022139879A (en) * | 2021-03-12 | 2022-09-26 | プライムプラネットエナジー＆ソリューションズ株式会社 | Method of manufacturing secondary battery electrode, electrode, and secondary battery comprising the electrode |
| JP7320010B2 (en) | 2021-03-12 | 2023-08-02 | プライムプラネットエナジー＆ソリューションズ株式会社 | METHOD FOR MANUFACTURING ELECTRODE FOR SECONDARY BATTERY, ELECTRODE AND SECONDARY BATTERY HAVING SAME |
| CN115084441B (en) * | 2021-03-12 | 2023-10-31 | 泰星能源解决方案有限公司 | Method for manufacturing electrode for secondary battery, electrode, and secondary battery provided with electrode |
| WO2023182531A1 (en) * | 2022-03-25 | 2023-09-28 | 三菱ケミカル株式会社 | Organic-inorganic hybrid membrane, organic-inorganic hybrid membrane composite, gas separation and concentration method, gas separation membrane module, method for producing organic-inorganic hybrid membrane, and method for producing organic-inorganic hybrid membrane composite |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4244445B2 (en) | 2009-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2000348713A (en) | Manufacture of positive electrode mix for battery and positive electrode plate for battery using positive electrode mix | |
| JP6183360B2 (en) | Electrode of lithium ion secondary battery and lithium ion secondary battery using the same | |
| EP2343757A1 (en) | Electrode for lead storage battery and lead storage battery | |
| JPWO2013179909A1 (en) | ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, METHOD FOR PREPARING THE ELECTRODE PASTE, AND METHOD FOR PRODUCING THE ELECTRODE | |
| JP5614578B2 (en) | Method for producing aqueous composition | |
| CN110600671A (en) | Semi-dry method batching process of lithium ion battery electrode slurry, lithium ion battery positive plate, battery negative plate and lithium ion battery | |
| CN102185126A (en) | Method for dispersing micro-scale and nano-scale electrode materials | |
| JP7159902B2 (en) | Electrode manufacturing method | |
| JP2011065797A (en) | Adhesion improver of lithium ion battery negative electrode material to collector | |
| CN104393246A (en) | Preparation method of nanometer lithium iron phosphate water-based slurry | |
| JP2015032554A (en) | Method of manufacturing negative electrode of lithium ion secondary battery | |
| CN104466087A (en) | Lithium ion battery anode slurry and preparation method and application thereof | |
| JPH08195201A (en) | Manufacture of negative electrode mix of nonaqueous secondary battery | |
| CN112755872A (en) | Preparation method of battery cathode slurry | |
| CN107732150A (en) | Negative electrode of lithium ion battery and preparation method thereof and lithium ion battery | |
| JPH02158055A (en) | Manufacture of positive mix for lithium secondary battery | |
| JP2017073363A (en) | Method for producing electrode mixture slurry | |
| JP2007122907A (en) | Producing method of water-based electrode paste, and its utilization | |
| JP6167708B2 (en) | Method for producing electrode forming slurry | |
| JPH11144714A (en) | Manufacture of slurry for electrode | |
| JP2006236658A (en) | Manufacturing method of electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte battery | |
| JPH11213990A (en) | Manufacture of battery electrode and battery | |
| JP7111552B2 (en) | Manufacturing method and manufacturing apparatus for active material mixture | |
| JP6973223B2 (en) | Manufacturing method of active material mixture | |
| CN112952029A (en) | Silica-carbon lithium ion battery composite negative electrode slurry, preparation method thereof and lithium ion battery negative electrode prepared from silica-carbon lithium ion battery composite negative electrode slurry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20051202 |
|
| RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20060112 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080307 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080325 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080416 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080930 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081125 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20081216 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20081229 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120116 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130116 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130116 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140116 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150116 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |