JPH0521069A - Nonaqueous electrolytic battery and electrode therefor - Google Patents
Nonaqueous electrolytic battery and electrode thereforInfo
- Publication number
- JPH0521069A JPH0521069A JP3172561A JP17256191A JPH0521069A JP H0521069 A JPH0521069 A JP H0521069A JP 3172561 A JP3172561 A JP 3172561A JP 17256191 A JP17256191 A JP 17256191A JP H0521069 A JPH0521069 A JP H0521069A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- battery
- separator
- active material
- 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
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Cell Separators (AREA)
- Primary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、不織布あるいはマイク
ロポーラスフィルムのような多孔性セパレータと、正極
活物質層または負極活物質層とを一体化した電極及びこ
の電極を備えた電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode in which a porous separator such as a nonwoven fabric or a microporous film and a positive electrode active material layer or a negative electrode active material layer are integrated, and a battery provided with this electrode. .
【０００２】[0002]
【従来の技術】近年、エレクトロニクスの進歩により、
携帯電話やラップトップパソコン等の電子機器の小型化
が盛んに行われており、電源としての電池に高容量化、
高出力化が切望されるようになってきた。2. Description of the Related Art In recent years, due to advances in electronics,
Electronic devices such as mobile phones and laptop PCs are being miniaturized, and the capacity of batteries as power sources is increasing.
High output has been earnestly desired.
【０００３】例えば、高容量化及び高出力化が可能なリ
チウム電池では、一般に正極は二酸化マンガン、ＬｉＣ
ｏＯ2、ＬｉＮｉＯ2、ＬｉＦｅＯ2等の活物質を網状ま
たはエキスパンドメタル状の集電体に塗着または充填し
て作製されており、このように、網状またはエキスパン
ドメタル状の集電体を用いた場合には、極板の薄形化に
は限界がある。For example, in a lithium battery capable of high capacity and high output, the positive electrode is generally manganese dioxide, LiC.
oO 2, LiNiO 2, which is produced by Nurigi or filling an active material such as LiFeO 2 reticulated or expanded metal-like current collector, thus, with net or expanded metal-like current collector In some cases, there is a limit to thinning the electrode plate.
【０００４】これに対して、特開昭６０−２５３１５７
号公報では、正極集電体としてアルミニウム箔を用い、
この集電体上に正極活物質を主体とするペーストを塗布
して正極を製造することが提案されており、これによっ
て、極板を薄形化及び大面積化することが可能となる。On the other hand, Japanese Patent Laid-Open No. 60-253157.
In the publication, aluminum foil is used as the positive electrode collector,
It has been proposed to apply a paste mainly composed of a positive electrode active material onto the current collector to manufacture a positive electrode, which makes it possible to make the electrode plate thinner and have a larger area.
【０００５】これら非水電解質電池では、充放電の繰り
返しに伴うサイクル劣化は、負極のリチウムの消耗と共
に進行し、負極の消耗速度は充放電時の電流密度に比例
するといわれている。したがって、前述のように、極板
を薄形化及び大面積化ができれば、充放電時の電流密度
を低くすることができ、サイクル寿命を延ばすことが可
能となる。In these non-aqueous electrolyte batteries, cycle deterioration due to repeated charging / discharging proceeds with the consumption of lithium in the negative electrode, and the negative electrode consumption rate is said to be proportional to the current density during charging / discharging. Therefore, as described above, if the electrode plate can be made thinner and the area can be made larger, the current density at the time of charging and discharging can be lowered and the cycle life can be extended.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上述の
電池では、正極と負極との間にセパレータが介在するよ
うに順次積層して電池を構成するか、または積層した後
に渦巻状に卷回して電池を構成しなければならないた
め、積層時のずれや、卷回時の巻きずれによって、正負
極が内部ショートするおそれがある。また、セパレータ
と電極が別体となっているため、どうしても電池内にお
ける活物質の占有率があがらないという問題があった。However, in the above-mentioned battery, the battery is constructed by sequentially stacking the positive electrode and the negative electrode so that the separator is interposed, or by stacking them and then spirally winding the battery. Therefore, the positive and negative electrodes may be internally short-circuited due to misalignment during stacking and misalignment during winding. Further, since the separator and the electrode are separate, there is a problem that the occupation rate of the active material in the battery is not increased.
【０００７】[0007]
【課題を解決するための手段】本発明の非水電解質電池
用電極は、多孔性セパーレータの一方の面に形成した導
電性被膜上に活物質層を形成したことを特徴とするもの
であり、こうして作製した前記正極及び負極を、そのセ
パレータの導電性被膜未形成の他方の面を対極の活物質
層と対向させた状態で、渦巻状に卷回して非水電解質電
池を構成するとより一層の効果を得ることができる。The electrode for a non-aqueous electrolyte battery of the present invention is characterized in that an active material layer is formed on a conductive film formed on one surface of a porous separator. The positive electrode and the negative electrode produced in this manner, with the other surface of the separator not having the conductive coating formed thereon facing the active material layer of the counter electrode, are wound in a spiral to form a non-aqueous electrolyte battery. The effect can be obtained.
【０００８】[0008]
【作用】本発明電池の電極は、多孔性セパーレータの一
方の面に導電性被膜を形成し、この被膜上に活物質層を
配して、セパレータと電極を一体化しているため、電極
を薄く構成し、電極同志の対向面積を広くできることか
ら、活物質の利用率を高めることが可能となる。また、
電極の対向面積を広くすると、高率放電時に電極間に流
れる電流の電流密度が小さくなるため、負極の消耗速度
を遅くでき、サイクル寿命を向上させることが可能とな
る。In the electrode of the battery of the present invention, a conductive coating is formed on one surface of the porous separator, and the active material layer is arranged on this coating, so that the separator and the electrode are integrated. Since it is configured and the opposing area of the electrodes can be widened, the utilization rate of the active material can be increased. Also,
When the facing area of the electrodes is widened, the current density of the current flowing between the electrodes at the time of high rate discharge becomes small, so that the consumption speed of the negative electrode can be slowed down and the cycle life can be improved.
【０００９】他方、多孔性セパレータの表面に形成した
導電性被膜は、その表面が凹凸状となるため、集電面積
が広くなって集電性が向上し、更に、金属箔を芯体に用
いた場合に比べると、表面に導電性被膜を形成したセパ
レータは、集電に加えて電解液の保液も行うことができ
ることから、電解液の供給量を増加させることができ
る。On the other hand, the conductive coating film formed on the surface of the porous separator has an uneven surface, so that the current collecting area is widened to improve the current collecting property. Furthermore, the metal foil is used as the core body. Compared to the case where the separator is provided, the separator having the conductive coating formed on the surface thereof can also retain the electrolytic solution in addition to collecting the current, so that the supply amount of the electrolytic solution can be increased.
【００１０】そして、上記電極を渦巻状に卷回した場合
には、電極がセパレータに固定されているので、巻きず
れによって、正負極が直接接触して内部ショートするこ
とが防止できる。When the electrodes are wound in a spiral shape, the electrodes are fixed to the separator, so that it is possible to prevent the positive and negative electrodes from directly contacting each other and causing an internal short circuit due to winding deviation.
【００１１】[0011]
［実施例１］図１(ａ)、(ｂ)及び図３は、何れも本発明
の一実施例にかかり、図１(ａ)及び(ｂ)は正極の断面図
及び平面図、図３は電池の半断面図である。[Embodiment 1] FIGS. 1 (a), 1 (b) and 3 all relate to an embodiment of the present invention, and FIGS. 1 (a) and 1 (b) are a sectional view and a plan view of a positive electrode, FIG. [Fig. 3] is a half sectional view of a battery.
【００１２】まず最初に、帯状正極１は次のようにして
作製した。First, the strip positive electrode 1 was manufactured as follows.
【００１３】マイクロポーラスフィルムからなるセパレ
ータ２の一方の面からアルミニウムを蒸着し、一方の面
にのみアルミニウムからなる導電性被膜３を形成する。
この時、アルミニウムはセパレータの中心付近まで侵入
するが、それ以上の侵入はなく、セパレータの他方の面
にはアルミニウムは存在していない。Aluminum is vapor-deposited from one surface of the separator 2 made of a microporous film, and the conductive coating film 3 made of aluminum is formed only on one surface.
At this time, aluminum penetrates to the vicinity of the center of the separator, but there is no further penetration, and aluminum does not exist on the other surface of the separator.
【００１４】また、市販の炭酸コバルトと炭酸リチウム
とを、リチウム原子対コバルト原子が１：１の組成比に
なるよう混合し、空気中で８５０℃で２０時間焼成し
て、リチウムコバルト複合酸化物（ＬｉＣｏＯ2）を作
製し、これを正極活物質とする。このリチウムコバルト
複合酸化物８５重量部と、グラファイト粉末１２重量部
とを混合し、５重量％のポリフッ化ビニリデンを溶かし
たＮ−メチル−２−ピロリドン溶液を、前記ポリフッ化
ビニリデンが固形粉末として３重量部となるよう混合分
散させてインク状とした。Commercially available cobalt carbonate and lithium carbonate are mixed so that the composition ratio of lithium atom to cobalt atom is 1: 1 and the mixture is fired in air at 850 ° C. for 20 hours to obtain a lithium cobalt composite oxide. (LiCoO 2 ) is prepared and used as the positive electrode active material. 85 parts by weight of this lithium cobalt composite oxide and 12 parts by weight of graphite powder were mixed, and an N-methyl-2-pyrrolidone solution containing 5% by weight of polyvinylidene fluoride was dissolved. An ink was prepared by mixing and dispersing so that the weight of the mixture was about 1 part.
【００１５】そして、こうして作製したインク状の正極
合剤を、前記セパレータ２の導電性被膜３の上から、活
物質層の厚みが０．０５〜０．２０mmになるよう均一に
塗布し、乾燥して、第１図(ａ)及び(ｂ)に示す帯状の正
極１を作製した。４は正極活物質層であり、帯状正極の
上下端５、６には正極活物質層４は形成されておらず、
セパレータ２に蒸着したアルミニウムからなる導電性被
膜３が露出している。また、７は正極リードであり、こ
の正極リード７は前記導電性被膜３に直接固定されてお
り、正極リード７を固定している導電性被膜３上には活
物質層４は形成されていない。The ink-like positive electrode mixture thus prepared is uniformly applied onto the conductive coating 3 of the separator 2 so that the thickness of the active material layer is 0.05 to 0.20 mm, and dried. Then, a strip-shaped positive electrode 1 shown in FIGS. 1 (a) and 1 (b) was produced. 4 is a positive electrode active material layer, the positive electrode active material layer 4 is not formed on the upper and lower ends 5 and 6 of the strip-shaped positive electrode,
The conductive coating 3 made of aluminum vapor-deposited on the separator 2 is exposed. Reference numeral 7 denotes a positive electrode lead, and the positive electrode lead 7 is directly fixed to the conductive coating 3, and the active material layer 4 is not formed on the conductive coating 3 fixing the positive electrode lead 7. .
【００１６】次に、帯状負極は次のようにして作製し
た。Next, the strip negative electrode was manufactured as follows.
【００１７】マイクロポーラスフィルムからなるセパレ
ータ８の一方の面から銅を蒸着し、一方の面にのみ銅か
らなる導電性被膜を形成する。また、粉砕したピッチコ
ークス９５重量部を、５重量％のポリフッ化ビニリデン
を溶かしたＮ−メチル−２−ピロリドン溶液に、前記ポ
リフッ化ビニリデンが固形粉末として５重量部となるよ
う混合分散させてインク状とした。Copper is vapor-deposited from one surface of the separator 8 made of a microporous film, and a conductive coating film made of copper is formed only on one surface. Further, 95 parts by weight of crushed pitch coke was mixed and dispersed in an N-methyl-2-pyrrolidone solution in which 5% by weight of polyvinylidene fluoride was dissolved so that the polyvinylidene fluoride became 5 parts by weight as a solid powder. I took it.
【００１８】そして、こうして作製したインク状の負極
合剤を、前記セパレータ８の導電性被膜の上から、活物
質層の厚みが０．０５〜０．２０mmになるよう均一に塗
布し、乾燥して、前記正極と同様な構成の帯状の負極を
作製した。この負極も、帯状負極の上下端には負極活物
質層９は形成されておらず、セパレータ８に蒸着した銅
からなる導電性被膜が露出しており、負極リード10は前
記導電性被膜に直接固定されている。The ink-form negative electrode mixture thus prepared is evenly applied onto the conductive coating of the separator 8 so that the thickness of the active material layer is 0.05 to 0.20 mm, and dried. As a result, a strip-shaped negative electrode having the same structure as the positive electrode was produced. Also in this negative electrode, the negative electrode active material layer 9 is not formed on the upper and lower ends of the strip-shaped negative electrode, and the conductive coating made of copper vapor-deposited on the separator 8 is exposed, and the negative electrode lead 10 is directly attached to the conductive coating. It is fixed.
【００１９】上記セパレータと正極活物質層を一体化し
た帯状正極及び、セパレータと負極活物質層を一体化し
た帯状負極を各１枚積層し、この正負極をそのセパレー
タの導電性被膜未形成面を対極の活物質層と対向させた
状態で、渦巻状に卷回して電極体を構成した。図３はこ
の電極体を用いた電池の半断面図であり、正極リード７
が封口蓋11に接続されると共に、負極リード10が電池外
装缶12に接続されている。また、電解液としては、炭酸
プロピレンと１，２−ジメトキシエタンからなる混合溶
媒に、六フッ化リン酸リチウム（ＬｉＰＦ6）を０．７
５mol/dm3溶解した非水電解質を用いている。尚、図４
中、13は絶縁パッキング、14及び15は絶縁板である。A strip-shaped positive electrode in which the separator and the positive electrode active material layer are integrated, and a strip-shaped negative electrode in which the separator and the negative electrode active material layer are integrated are laminated one by one, and the positive and negative electrodes are formed on the surface of the separator on which the conductive film is not formed. While facing the active material layer of the counter electrode, the electrode body was formed by spirally winding. FIG. 3 is a half sectional view of a battery using this electrode assembly.
Is connected to the sealing lid 11, and the negative electrode lead 10 is connected to the battery outer can 12. Further, as the electrolytic solution, lithium hexafluorophosphate (LiPF 6 ) was added to a mixed solvent of propylene carbonate and 1,2-dimethoxyethane in an amount of 0.7.
A non-aqueous electrolyte dissolved at 5 mol / dm 3 is used. Incidentally, FIG.
Inside, 13 is an insulating packing, and 14 and 15 are insulating plates.
【００２０】以上のようにして、直径１３．８mm、高さ
５０mmの円筒形非水電解質二次電池を作製し、この電池
をＡとする。
［比較例］第２図(ａ)及び(ｂ)は、比較電池の正極の断
面図及び平面図、第４図は、比較電池の半断面図であ
る。As described above, a cylindrical nonaqueous electrolyte secondary battery having a diameter of 13.8 mm and a height of 50 mm was produced, and this battery is designated as A. [Comparative Example] FIGS. 2 (a) and 2 (b) are a sectional view and a plan view of the positive electrode of the comparative battery, and FIG. 4 is a half sectional view of the comparative battery.
【００２１】正極の芯体16としてアルミニウム箔を用
い、この正極芯体16の両面に夫々前記正極活物質層４を
実施例１と同一の厚みになるよう形成して正極17を作製
し、また、負極の芯体18として銅箔を用い、この負極芯
体18の両面に前記負極活物質層９を実施例１と同一の厚
みになるよう形成して負極を作製した。尚、正極リード
７及び負極リード10は前記正極芯体16及び負極芯体18に
直接固定されており、正極リード７を固定している芯体
上には活物質層は形成されていない。Aluminum foil is used as the core body 16 of the positive electrode, and the positive electrode active material layers 4 are formed on both surfaces of the positive electrode core body 16 so as to have the same thickness as in Example 1 to produce the positive electrode 17. A copper foil was used as the negative electrode core body 18, and the negative electrode active material layer 9 was formed on both surfaces of the negative electrode core body 18 so as to have the same thickness as in Example 1 to produce a negative electrode. The positive electrode lead 7 and the negative electrode lead 10 are directly fixed to the positive electrode core body 16 and the negative electrode core body 18, and no active material layer is formed on the core body to which the positive electrode lead 7 is fixed.
【００２２】次いで、前記実施例で使用したセパレータ
を導電性被膜を形成せずにそのまま用い、このセパレー
タ19を前記正極及び負極の間に介在させて、渦巻状の卷
回して電極体を作製した。図４はこの電極体を用いた電
池であり、この電池を比較電池Ｂとする。Then, the separator used in the above example was used as it was without forming a conductive film, and the separator 19 was interposed between the positive electrode and the negative electrode and wound in a spiral shape to prepare an electrode body. . FIG. 4 shows a battery using this electrode body, and this battery is referred to as comparative battery B.
【００２３】こうして作製した電池Ａ及びＢを、１Ｃ及
び０．１Ｃの電流で電池電圧が２．７５Ｖになるまで放
電して、放電特性を測定し、その特性を図５及び図６に
示す。また、上記電池Ａ及びＢを、０．１Ｃの電流で充
電し、電池電圧が４．２Ｖになった時点で充電を停止し
た後、前述と同様の条件で放電を行うサイクル条件で充
放電を繰り返し、サイクル特性を測定した。この結果を
図７に示す。尚、図５及び図６における放電容量は、比
較電池Ｂを０．１Ｃで放電したときの放電容量を１００
％として示しており、図７における放電容量は、各電池
の初期の放電容量を１００％として示している。The batteries A and B thus produced were discharged at currents of 1 C and 0.1 C until the battery voltage reached 2.75 V, and the discharge characteristics were measured. The characteristics are shown in FIGS. 5 and 6. Also, the batteries A and B were charged with a current of 0.1 C, stopped at the time when the battery voltage reached 4.2 V, and then charged and discharged under the cycle conditions of discharging under the same conditions as described above. The cycle characteristics were measured repeatedly. The result is shown in FIG. 7. The discharge capacity in FIGS. 5 and 6 is 100 when the comparative battery B is discharged at 0.1 C.
The discharge capacity in FIG. 7 is shown assuming that the initial discharge capacity of each battery is 100%.
【００２４】これらの結果より、本発明電池Ａは、比較
電池Ｂより放電容量が増加し、充放電サイクルの経過に
伴う放電容量の低下も小さく抑えられていることがわか
る。From these results, it is understood that the battery A of the present invention has a larger discharge capacity than the comparative battery B, and the decrease of the discharge capacity with the progress of charge / discharge cycles is suppressed to a small level.
【００２５】本発明電池Ａの放電容量が比較電池Ｂに比
べて大きくなっているのは、本発明電池Ａでは比較電池
Ｂに比べて電極が長くなり電極同志の対向面積が広くな
ることにより、活物質の利用率が高くなったためと考え
られ、１Ｃ電流という高率放電の際に、特にその効果が
表れている。The discharge capacity of the battery A of the present invention is larger than that of the comparative battery B because the electrodes of the battery A of the present invention are longer than those of the comparative battery B and the facing area between the electrodes is wider. It is considered that this is because the utilization rate of the active material is high, and the effect is particularly exhibited at the high rate discharge of 1 C current.
【００２６】また、本発明電池Ａが比較電池Ｂよりサイ
クル特性が向上しているのは、本発明電池Ａでは、電極
芯体として多孔性のセパレータの表面に形成した導電性
被膜を用いているため、芯体の表面が凹凸状となり集電
面積が広くなって集電性が向上すること、及び電極の対
向面積が広く、高率放電時に電極間に流れる電流密度が
小さくなるため、負極の消耗速度が遅くなること、更
に、比較電池Ｂでは電解液の保液に関与できない芯体
が、本発明電池Ａでは電解液の保液を行うこともでき、
電解液の供給量が増することに起因しているものと考え
られる。Further, the battery A of the present invention has improved cycle characteristics as compared with the comparative battery B. The battery A of the present invention uses the conductive coating film formed on the surface of the porous separator as the electrode core. Therefore, the surface of the core becomes uneven and the current collecting area is widened to improve the current collecting property. Also, since the facing area of the electrodes is large and the current density flowing between the electrodes during high rate discharge is small, the negative electrode The consumption rate becomes slower, and further, in the comparative battery B, the core that cannot participate in the retention of the electrolytic solution can retain the electrolytic solution in the battery A of the present invention.
It is considered that this is due to the increase in the supply amount of the electrolytic solution.
【００２７】以上の実施例では、セパレータにマイクロ
ポーラスフィルムを用い、蒸着によって導電性被膜を形
成したが、セパレータとしては、不織布または織布など
の多孔性セパレータを用いても良く、導電性被膜の形成
も、蒸着に代えてメッキまたはスパッタなどによって形
成しても同様な効果が得られる。In the above examples, the microporous film was used as the separator and the conductive coating was formed by vapor deposition. However, a porous separator such as a nonwoven fabric or a woven cloth may be used as the separator. The same effect can be obtained by forming by plating or sputtering instead of vapor deposition.
【００２８】[0028]
【発明の効果】本発明の非水電解質電池用電極は、多孔
性セパーレータの一方の面に形成した導電性被膜上に活
物質層を形成したものであり、電極を薄く構成でき、電
極の対向面積を広くすることが可能となるため、活物質
の利用率が向上すると共に、電極の集電性及び電解液の
保液性が向上してサイクル特性を向上させることができ
る。INDUSTRIAL APPLICABILITY The nonaqueous electrolyte battery electrode of the present invention comprises an active material layer formed on a conductive coating formed on one surface of a porous separator. The electrode can be made thin and the electrodes can face each other. Since the area can be widened, the utilization factor of the active material is improved, and the current collecting property of the electrode and the liquid retaining property of the electrolytic solution are improved, so that the cycle characteristics can be improved.
【００２９】また、前記電極を用い、そのセパレータの
導電性被膜未形成の他方の面を対極の活物質層と対向さ
せた状態で、渦巻状に卷回して非水電解質電池を構成す
ると、活物質層がセパレータに固定されているので、巻
きずれによって正負極が直接接触して内部ショートを引
き起こすことを防止でき、電池の信頼性が向上する。When the above electrode is used and the other surface of the separator on which the conductive film is not formed is opposed to the active material layer of the counter electrode, the nonaqueous electrolyte battery is formed by spirally winding the electrode. Since the material layer is fixed to the separator, it is possible to prevent the positive and negative electrodes from directly contacting with each other due to winding misalignment to cause an internal short circuit, and the reliability of the battery is improved.
【図１】(ａ)は本発明の正極の断面図、(ｂ)は本発明の
正極の平面図である。1A is a cross-sectional view of a positive electrode of the present invention, and FIG. 1B is a plan view of the positive electrode of the present invention.
【図２】(ａ)は比較電池の正極の断面図、(ｂ)は比較電
池の正極の平面図である。2A is a cross-sectional view of a positive electrode of a comparative battery, and FIG. 2B is a plan view of a positive electrode of a comparative battery.
【図３】本発明電池の半断面図である。FIG. 3 is a half sectional view of the battery of the present invention.
【図４】比較電池の半断面図である。FIG. 4 is a half sectional view of a comparative battery.
【図５】本発明電池Ａ及び比較電池Ｂを１Ｃの電流で放
電した際の放電特性図である。FIG. 5 is a discharge characteristic diagram when the present battery A and the comparative battery B were discharged at a current of 1C.
【図６】本発明電池Ａ及び比較電池Ｂを０．１Ｃの電流
で放電した際の放電特性図である。FIG. 6 is a discharge characteristic diagram when the present battery A and the comparative battery B were discharged at a current of 0.1C.
【図７】本発明電池Ａ及び比較電池Ｂのサイクル特性図
である。FIG. 7 is a cycle characteristic diagram of the present battery A and the comparative battery B.
１ 正極 ２、８ セパレータ ３ 導電性被膜 ４ 正極活物質層 ９ 負極活物質層 1 positive electrode 2, 8 separator 3 Conductive film 4 Positive electrode active material layer 9 Negative electrode active material layer
Claims (2)
導電性被膜上に活物質層を形成してなる正極及び負極を
備え、前記正極及び負極は、そのセパレータの導電性被
膜未形成面を対極の活物質層と対向させた状態で、渦巻
状に卷回されていることを特徴とする非水電解質電池。1. A positive electrode and a negative electrode each having an active material layer formed on a conductive coating formed on one surface of a porous separator, wherein the positive electrode and the negative electrode have a conductive coating-free surface of the separator. A non-aqueous electrolyte battery, which is spirally wound in a state of facing an active material layer of a counter electrode.
た導電性被膜上に活物質層を形成してなる非水電解質電
池用電極。2. An electrode for a non-aqueous electrolyte battery, wherein an active material layer is formed on a conductive film formed on one surface of a porous separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17256191A JP3316219B2 (en) | 1991-07-12 | 1991-07-12 | Non-aqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17256191A JP3316219B2 (en) | 1991-07-12 | 1991-07-12 | Non-aqueous electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0521069A true JPH0521069A (en) | 1993-01-29 |
| JP3316219B2 JP3316219B2 (en) | 2002-08-19 |
Family
ID=15944138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17256191A Expired - Fee Related JP3316219B2 (en) | 1991-07-12 | 1991-07-12 | Non-aqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3316219B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011021644A1 (en) | 2009-08-19 | 2011-02-24 | 三菱化学株式会社 | Separator for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
| JP2013127983A (en) * | 2007-12-14 | 2013-06-27 | Panasonic Corp | Nonaqueous electrolyte secondary battery, and method for manufacturing the same |
| CN105977543A (en) * | 2016-07-05 | 2016-09-28 | 东莞市卓高电子科技有限公司 | Flexible battery |
| CN106410266A (en) * | 2016-10-28 | 2017-02-15 | 珠海市鹏辉电池有限公司 | Ultra-thin lithium ion battery and preparation method thereof |
| CN115513602A (en) * | 2022-10-21 | 2022-12-23 | 武汉中金泰富新能源科技有限公司 | Manufacturing process of power battery containing electrode with interface management layer structure |
-
1991
- 1991-07-12 JP JP17256191A patent/JP3316219B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013127983A (en) * | 2007-12-14 | 2013-06-27 | Panasonic Corp | Nonaqueous electrolyte secondary battery, and method for manufacturing the same |
| JP5271275B2 (en) * | 2007-12-14 | 2013-08-21 | パナソニック株式会社 | Method for producing non-aqueous electrolyte secondary battery |
| US8563157B2 (en) | 2007-12-14 | 2013-10-22 | Panasonic Corporation | Nonaqueous electrolyte secondary battery and method for manufacturing the same |
| WO2011021644A1 (en) | 2009-08-19 | 2011-02-24 | 三菱化学株式会社 | Separator for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
| JP2011065984A (en) * | 2009-08-19 | 2011-03-31 | Mitsubishi Chemicals Corp | Separator for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery |
| CN105977543A (en) * | 2016-07-05 | 2016-09-28 | 东莞市卓高电子科技有限公司 | Flexible battery |
| CN106410266A (en) * | 2016-10-28 | 2017-02-15 | 珠海市鹏辉电池有限公司 | Ultra-thin lithium ion battery and preparation method thereof |
| CN115513602A (en) * | 2022-10-21 | 2022-12-23 | 武汉中金泰富新能源科技有限公司 | Manufacturing process of power battery containing electrode with interface management layer structure |
| CN115513602B (en) * | 2022-10-21 | 2024-01-26 | 武汉中金泰富新能源科技有限公司 | Manufacturing process of power battery containing interface management layer structure electrode |
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| Publication number | Publication date |
|---|---|
| JP3316219B2 (en) | 2002-08-19 |
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