JPH04215253A - Battery - Google Patents
BatteryInfo
- Publication number
- JPH04215253A JPH04215253A JP2409718A JP40971890A JPH04215253A JP H04215253 A JPH04215253 A JP H04215253A JP 2409718 A JP2409718 A JP 2409718A JP 40971890 A JP40971890 A JP 40971890A JP H04215253 A JPH04215253 A JP H04215253A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- electrode
- battery
- current
- fiber material
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000002657 fibrous material Substances 0.000 claims abstract description 18
- 239000010409 thin film Substances 0.000 claims abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002759 woven fabric Substances 0.000 abstract description 6
- 239000004745 nonwoven fabric Substances 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 239000012209 synthetic fiber Substances 0.000 abstract 1
- 229920002994 synthetic fiber Polymers 0.000 abstract 1
- 239000011149 active material Substances 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 10
- -1 polyethylene Polymers 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 239000011888 foil Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052960 marcasite Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QENGPZGAWFQWCZ-UHFFFAOYSA-N 3-Methylthiophene Chemical compound CC=1C=CSC=1 QENGPZGAWFQWCZ-UHFFFAOYSA-N 0.000 description 1
- 229920003026 Acene Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- CDEIGFNQWMSEKG-UHFFFAOYSA-M chloro-[4-[(2-hydroxynaphthalen-1-yl)diazenyl]phenyl]mercury Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC1=CC=C([Hg]Cl)C=C1 CDEIGFNQWMSEKG-UHFFFAOYSA-M 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- YADSGOSSYOOKMP-UHFFFAOYSA-N lead dioxide Inorganic materials O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(II) oxide Inorganic materials [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000006253 pitch coke Substances 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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
Abstract
Description
【０００１】0001
【技術分野】本発明は、改良された集電体を用いた電池
に関するものである。TECHNICAL FIELD The present invention relates to a battery using an improved current collector.
【０００２】0002
【従来技術及びその問題点】一次電池や二次電池におけ
る集電体として、エキスパンドメタルや、金属メッシュ
を用いることは広く知られている（特開昭５７−１１４
７３号、特開昭６１−１５１９７５号）。一方、電極と
しては、できるだけ厚みの薄いものが要望されており、
この要望は特にスパイラル型構造の電極に関して大きい
。その理由は、スパイラル構造電極は、同一直径で巻取
ると、その厚みの薄い方が巻取り長さをより長くするこ
とができるため、正極及び負極の対向面積が大きくなり
、その結果、大電流放電や大電流充電が可能となるから
である[Prior art and its problems] It is widely known that expanded metal or metal mesh is used as a current collector in primary batteries or secondary batteries (Japanese Patent Application Laid-Open No. 57-114
No. 73, JP-A-61-151975). On the other hand, electrodes are required to be as thin as possible.
This demand is particularly great for electrodes with a spiral structure. The reason is that when spiral structure electrodes are wound with the same diameter, the thinner the electrode, the longer the winding length can be, which increases the opposing area of the positive and negative electrodes, resulting in a large current. This is because it enables discharging and large current charging.
【０００３】しかし、従来の前記エキスパンドメタルや
金属メッシュ等の金属材料からなる集電体を用いて作製
した電極では、その厚みを薄くするには限界があり、前
記のような要望を満たすことは困難であった。金属材料
の集電体では、その切断部分や端部のバリがセパレータ
ーを損傷させて内部短絡の原因となるので、活物質をそ
の表面に厚く付着させることが必要になり、その結果、
電極の厚みは必然的に大きいものとなった。電極の厚み
を薄くするために、集電体として金属箔を用いた電極も
知られているが、この電極の場合、その構造上集電効果
に劣る上に、活物質との接着性が悪いという問題もあり
、さらにコスト高になるという問題もある。[0003] However, with conventional electrodes made using current collectors made of metal materials such as expanded metal and metal mesh, there is a limit to how thin the electrodes can be, and it is difficult to meet the above requirements. It was difficult. For current collectors made of metal materials, burrs on the cut parts and edges can damage the separator and cause internal short circuits, so it is necessary to thickly adhere the active material to the surface.
The thickness of the electrode was inevitably large. In order to reduce the thickness of the electrode, electrodes that use metal foil as a current collector are also known, but in the case of this electrode, the current collection effect is poor due to its structure, and the adhesiveness with the active material is poor. There is also the problem of increased costs.
【０００４】0004
【発明の課題】本発明は、前記した従来の電極に見られ
る問題を解決し、実用性ある薄型構造の電極を提供する
ことをその課題とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems seen in the conventional electrodes described above and to provide a practical electrode with a thin structure.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、前記課題
を解決すべく鋭意研究を重ねた結果、金属薄膜で被覆さ
れた織布や不織布を電極の集電体として用いることによ
り、その課題を解決し得ることを見出し、本発明を完成
するに至った。[Means for Solving the Problems] As a result of intensive research to solve the above problems, the present inventors have found that by using a woven fabric or non-woven fabric coated with a metal thin film as a current collector of an electrode. The inventors have discovered that the problem can be solved and have completed the present invention.
【０００６】即ち、本発明によれば、正極と負極の少な
くとも一方の電極の集電体として、金属薄膜で被覆した
シート状繊維材料を用いたことを特徴とする電池が提供
される。That is, according to the present invention, there is provided a battery characterized in that a sheet-like fibrous material coated with a metal thin film is used as a current collector for at least one of the positive electrode and the negative electrode.
【０００７】本発明の電極は、金属薄膜を表面に有する
シート状繊維材料を集電体として用いたものである。こ
の場合、繊維としては、従来公知の種々のもの、例えば
、ポリエステル、ナイロン、ポリエチレン、ポリプロピ
レン、ポリフェニレンサルファイド等の各種合成樹脂か
ら形成したものが挙げられる。繊維の太さは微細な程好
ましい。繊維材料の厚みは、１０〜２００μｍ、好まし
くは２０〜５０μｍである。この繊維材料の厚みが薄す
ぎると機械的強度が低くなり、一方、厚すぎると薄型電
極を得るという本発明の目的を達成することができない
。シート状繊維材料には、織布、編布、不織布等が包含
される。この繊維材料の表面に被覆する金属は、導電性
を示すものであれば任意のものが用いられる。その具体
例としては、例えば、銅、ニッケル、金、銀、アルミニ
ウム、それらの合金、ＳＵＳ等が挙げられる。繊維材料
に対する金属被覆は、化学めっき法や、化学めっき法と
電気めっき法との組合せ、蒸着法等の従来公知の方法に
よって行うことができる。また、あらかじめ金属被覆さ
れた繊維を用いて形成された繊維材料も本発明における
集電体として好ましく使用される。繊維表面に形成され
る金属被膜の厚さは、できるだけ薄くするのが好ましい
。The electrode of the present invention uses a sheet-like fibrous material having a metal thin film on its surface as a current collector. In this case, the fibers include various conventionally known fibers, such as those formed from various synthetic resins such as polyester, nylon, polyethylene, polypropylene, and polyphenylene sulfide. The finer the thickness of the fibers, the better. The thickness of the fiber material is 10-200 μm, preferably 20-50 μm. If the thickness of the fiber material is too thin, the mechanical strength will be low, while if it is too thick, the objective of the present invention of obtaining a thin electrode cannot be achieved. Sheet-like fiber materials include woven fabrics, knitted fabrics, non-woven fabrics, and the like. Any metal can be used to coat the surface of the fiber material as long as it exhibits conductivity. Specific examples include copper, nickel, gold, silver, aluminum, alloys thereof, SUS, and the like. Metal coating on the fiber material can be performed by conventionally known methods such as chemical plating, a combination of chemical plating and electroplating, and vapor deposition. Furthermore, fibrous materials formed using fibers coated with metal in advance are also preferably used as current collectors in the present invention. It is preferable that the thickness of the metal coating formed on the fiber surface be as thin as possible.
【０００８】本発明で集電体として用いる表面に金属薄
膜を有するシート状繊維材料は、微細空隙（微細孔）を
有するものであり、その空隙の寸法は、１００〜１００
０μｍの範囲に規定するのがよい。これより小さな空隙
では活物質の充填が困難になり、一方前記範囲より大き
い空隙では活物質を充填して電極とした時に、金属被膜
を有する導電性繊維間に充填した活物質の繊維間距離が
長くなることから、電極の内部抵抗が増加するので好ま
しくない。The sheet-like fibrous material having a metal thin film on the surface used as a current collector in the present invention has fine voids (micropores), and the size of the voids is 100 to 100.
It is preferable to define it in the range of 0 μm. If the gap is smaller than this, it will be difficult to fill the active material, while if the gap is larger than the above range, when the active material is filled to form an electrode, the distance between the fibers of the active material filled between the conductive fibers with the metal coating will be Since the length increases, the internal resistance of the electrode increases, which is not preferable.
【０００９】本発明で用いる電極は、前記した表面に金
属薄膜を有するシート状繊維材料に対して、活物質を結
合させることによって作製される。活物質としては、従
来公知のものが用いられる。例えば、正極活物質として
は、ＭｎＯ２、Ｃｒ２Ｏ５、Ｖ２Ｏ５、ＣｏＳ２、Ｔｉ
Ｓ、ＦｅＳ２、ＭｏＳ２、ＨｇＯ、Ａｇ２Ｏ、（ＣＩ）
ｎ、ＣｕＯ、ＰｂＯ２、ＮｉＯＨＯ、Ｓ、ＦｅＳ２、活
性炭、ポリアニリン、ポリピロール、ポリ−３−メチル
チオフェン、ポリジフェニルベンジジン、メタロセンポ
リマー等が挙げられる。負極活物質としては、Ｌｉ、Ｎ
ａ、Ｋ、Ａｇ、Ｃｕ、Ｚｎ等の金属や、Ｌｉと、Ａｌ、
Ｍｇ、Ｐｂ、Ｓｉ、Ｇａ、Ｉｎ等との合金、ポリアセチ
レン、ポリチオフェン、ポリパラフェニレン、ポリピリ
ジン、ポリアセン、グラファイト、ピッチコークス等が
挙げられる。[0009] The electrode used in the present invention is produced by bonding an active material to the above-described sheet-like fibrous material having a metal thin film on its surface. As the active material, conventionally known materials are used. For example, positive electrode active materials include MnO2, Cr2O5, V2O5, CoS2, Ti
S, FeS2, MoS2, HgO, Ag2O, (CI)
n, CuO, PbO2, NiOHO, S, FeS2, activated carbon, polyaniline, polypyrrole, poly-3-methylthiophene, polydiphenylbenzidine, metallocene polymer, and the like. As negative electrode active materials, Li, N
Metals such as a, K, Ag, Cu, Zn, Li, Al,
Examples include alloys with Mg, Pb, Si, Ga, In, etc., polyacetylene, polythiophene, polyparaphenylene, polypyridine, polyacene, graphite, and pitch coke.
【００１０】シート状繊維材料に対して活物質を結合さ
せて電極を作製する方法は、従来公知の方法に従って実
施することができる。例えば、ＭｎＯ２を活物質として
含む正極を得る場合、ＭｎＯ２の粉体と、カーボンブラ
ックや、グラファイト等の導電材と、テフロンディスパ
ージョンとを所定割合で混練し、この混練物を繊維材料
表面に塗布し、加圧ローラーにより厚みを均一にし、乾
燥すればよい。一方、リチウム負極を得る場合には、リ
チウム箔又はリチウム合金箔を繊維材料表面に重ね、加
圧して一体化すればよい。他の活物質を用いた電極も前
記と同様にして得ることができる。[0010] A method for producing an electrode by bonding an active material to a sheet-like fibrous material can be carried out according to a conventionally known method. For example, when obtaining a positive electrode containing MnO2 as an active material, MnO2 powder, a conductive material such as carbon black or graphite, and Teflon dispersion are kneaded in a predetermined ratio, and this kneaded product is applied to the surface of the fiber material. Then, use a pressure roller to make the thickness uniform and dry. On the other hand, in order to obtain a lithium negative electrode, lithium foil or lithium alloy foil may be stacked on the surface of the fiber material and integrated by applying pressure. Electrodes using other active materials can also be obtained in the same manner as described above.
【００１１】本発明の電池は、前記のようにして得た正
極と負極とをセパレータを介して積層し、電解液ととも
に電池缶内に封入すればよい。この場合、セパセーター
としては、従来公知のもの、例えば、微孔性ポリプロピ
レン膜や、微孔性ポリエチレン膜、ポリアミド不織布、
紙等が用いられる。本発明の電池は、スパイラル電極構
造のものであることができる他、シート型やコイン型の
電池、さらにガム型（角型）電池であることができる。[0011] The battery of the present invention may be obtained by laminating the positive electrode and negative electrode obtained as described above with a separator interposed therebetween, and enclosing them together with an electrolyte in a battery can. In this case, the separator may be a conventionally known separator, such as a microporous polypropylene membrane, a microporous polyethylene membrane, a polyamide nonwoven fabric,
Paper etc. are used. The battery of the present invention may have a spiral electrode structure, and may also be a sheet-type or coin-type battery, or a gum-type (prismatic) battery.
【００１２】0012
【実施例】次に本発明を実施例によりさらに詳細に説明
する。EXAMPLES Next, the present invention will be explained in more detail with reference to examples.
【００１３】[0013]
【実施例１】熱処理電解二酸化マンガン８０重量部、グ
ラファイト１０重量部及び６０％テフロンディスパージ
ョン１０重量部を充分に混練し、この混練物を、ニッケ
ルメッキポリエステル織布（厚さ：６４μｍ、ニッケル
付着量：６．４ｇ／ｍ２、三菱電線工業（株）製）の両
面に塗設し、幅：４５ｍｍ、長さ：４０ｃｍ、厚さ：８
０μｍの正極を作成した。[Example 1] 80 parts by weight of heat-treated electrolytic manganese dioxide, 10 parts by weight of graphite, and 10 parts by weight of 60% Teflon dispersion were thoroughly kneaded, and the kneaded product was mixed with a nickel-plated polyester woven fabric (thickness: 64 μm, nickel-coated). Amount: 6.4 g/m2, coated on both sides of Mitsubishi Cable Industries Co., Ltd. Width: 45 mm, Length: 40 cm, Thickness: 8
A positive electrode with a thickness of 0 μm was created.
【００１４】この正極と負極としてのリチウム箔とをそ
の間にポリプロピレン製セパレーターをはさんで積層し
、スパイラル構造の電極を作り、これを電解液とともに
単−３の電池缶に収納した。この場合、電解液としては
、ジメトキシエタン５０重量部とプロピレンカーボネー
ト５０重量部との混合溶媒にＬｉＢＦ４を１ｍｏｌ／ｌ
の割合で溶解した溶液を用いた。このリチウム電池の短
絡電流値は１９．８Ａであった。また、この短絡電流値
測定後、電池を分解してセパレーターの状態を観察した
ところ、損傷はなかった。[0014] This positive electrode and a lithium foil serving as a negative electrode were laminated with a polypropylene separator sandwiched between them to form a spiral-structured electrode, which was housed in a AA battery can together with an electrolyte. In this case, the electrolytic solution is a mixed solvent of 50 parts by weight of dimethoxyethane and 50 parts by weight of propylene carbonate with 1 mol/l of LiBF4.
A solution was used in which the mixture was dissolved at a ratio of . The short circuit current value of this lithium battery was 19.8A. Further, after measuring this short circuit current value, the battery was disassembled and the state of the separator was observed, and no damage was found.
【００１５】[0015]
【実施例２】ＳＵＳを蒸着したナイロン織布（スパッタ
厚さ：０．２μｍ、織布厚：５０μｍ、ＮＢＣ工業社製
）に、厚さ：５０μｍのリチウム箔を圧着し、幅：４５
ｍｍ、長さ：４０ｃｍ、厚さ：８０μｍの負極を作成し
た。次に、この負極と、実施例１で示した正極、セパレ
ーター及び電解液を用いて、実施例１と同様にしてリチ
ウム電池を作った。この電池の短絡電流値は２１．２Ａ
であった。また、この短絡電流値測定後、電池を分解し
てセパレーターの状態を観察したところ、損傷はなかっ
た。[Example 2] Lithium foil with a thickness of 50 μm was crimped onto a nylon woven fabric coated with SUS (sputter thickness: 0.2 μm, woven fabric thickness: 50 μm, manufactured by NBC Industries), width: 45 μm.
A negative electrode with a length of 40 cm and a thickness of 80 μm was prepared. Next, using this negative electrode, the positive electrode, separator, and electrolyte shown in Example 1, a lithium battery was produced in the same manner as in Example 1. The short circuit current value of this battery is 21.2A
Met. Further, after measuring this short circuit current value, the battery was disassembled and the state of the separator was observed, and no damage was found.
【００１６】[0016]
【比較例１】厚さ：３０μｍのＳＵＳエキスパンドメタ
ルの両面に、実施例１で示した二酸化マンガン混練物を
塗設して、厚さ：３２０μｍ、幅：４５ｍｍ、長さ：４
０ｃｍの正極を作成した。次に、この正極と、負極とし
ての幅：４５ｍｍ、長さ：４０ｃｍ、厚さ：５０μｍの
リチウム箔と、実施例１で示したポリプロピレン製セパ
レーターを用いてスパイラル構造の電極を作成したが、
電極は単−３の電池缶には収納できず、単−３の電池缶
に収納するには長さを２０ｃｍとしてスパイラル構造電
極とすることが必要であった。しかし、このスパイラル
構造電極を収納して形成した電池は、内部短絡を起して
いた。そこで、この電池を分解して内部を観察したとこ
ろ、正極端部のエキスパンドメタルによりセパレーター
が破られ、正極とリチウムとが接触していることが観察
された。[Comparative Example 1] The manganese dioxide kneaded product shown in Example 1 was coated on both sides of SUS expanded metal with a thickness of 30 μm, and the thickness was 320 μm, width: 45 mm, and length: 4.
A 0 cm positive electrode was created. Next, an electrode with a spiral structure was created using this positive electrode, a lithium foil having a width of 45 mm, a length of 40 cm, and a thickness of 50 μm as a negative electrode, and the polypropylene separator shown in Example 1.
The electrode could not be housed in a AA battery can, and in order to be housed in a AA battery can, it was necessary to have a spiral structure electrode with a length of 20 cm. However, batteries formed by housing this spiral structure electrode suffered from internal short circuits. When this battery was disassembled and the inside observed, it was observed that the separator was broken by the expanded metal at the positive end, and the positive electrode was in contact with lithium.
【００１７】[0017]
【発明の効果】本発明の電池は、正極と負極の少なくと
も一方の電極の集電体として金属薄膜で被覆したシート
状繊維材料を用いて、その電極を薄型構造にしたもので
あり、その結果、正極と負極の対向面積が大きくなり、
大電流放電や大電流充電が可能となったものである。[Effects of the Invention] The battery of the present invention uses a sheet-like fiber material coated with a metal thin film as a current collector for at least one of the positive and negative electrodes, and the electrode has a thin structure. , the facing area of the positive and negative electrodes increases,
This enables large current discharge and large current charging.
Claims (1)
集電体として、金属薄膜で被覆したシート状繊維材料を
用いたことを特徴とする電池。1. A battery characterized in that a sheet-like fiber material coated with a metal thin film is used as a current collector for at least one of a positive electrode and a negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2409718A JPH04215253A (en) | 1990-12-11 | 1990-12-11 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2409718A JPH04215253A (en) | 1990-12-11 | 1990-12-11 | Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04215253A true JPH04215253A (en) | 1992-08-06 |
Family
ID=18519013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2409718A Pending JPH04215253A (en) | 1990-12-11 | 1990-12-11 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04215253A (en) |
-
1990
- 1990-12-11 JP JP2409718A patent/JPH04215253A/en active Pending
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