JPH03222258A - Lithium iron sulfide battery - Google Patents
Lithium iron sulfide batteryInfo
- Publication number
- JPH03222258A JPH03222258A JP2015769A JP1576990A JPH03222258A JP H03222258 A JPH03222258 A JP H03222258A JP 2015769 A JP2015769 A JP 2015769A JP 1576990 A JP1576990 A JP 1576990A JP H03222258 A JPH03222258 A JP H03222258A
- Authority
- JP
- Japan
- Prior art keywords
- iron sulfide
- positive electrode
- electrode
- battery
- collector
- 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
- LWRYTNDOEJYQME-UHFFFAOYSA-N lithium;sulfanylideneiron Chemical compound [Li].[Fe]=S LWRYTNDOEJYQME-UHFFFAOYSA-N 0.000 title claims description 18
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229920001971 elastomer Polymers 0.000 claims abstract description 15
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 11
- 239000011737 fluorine Substances 0.000 claims description 11
- 229910052731 fluorine Inorganic materials 0.000 claims description 11
- 239000007774 positive electrode material Substances 0.000 abstract description 9
- 238000002156 mixing Methods 0.000 abstract description 7
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 229920001973 fluoroelastomer Polymers 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- -1 boria trichloride Polymers 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y02E60/12—
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、リチウム硫化鉄電池特にその正極に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a lithium iron sulfide battery, and in particular to a positive electrode thereof.
本発明は、リチウム硫化鉄電池において、正極活物質で
ある硫化鉄をフッ素系ゴムをバインダーとして集電体に
塗布して正極を構成することにより、硫化鉄の集電体か
らの剥離を防ぎ、渦巻式構造のリチウム硫化鉄電池の実
用化を可能にしたものである。The present invention provides a lithium iron sulfide battery in which iron sulfide, which is a positive electrode active material, is applied to a current collector using fluorine rubber as a binder to form a positive electrode, thereby preventing the iron sulfide from peeling off from the current collector. This made it possible to put a lithium iron sulfide battery with a spiral structure into practical use.
近年、ビデオカメラやヘッドフォンステレオ等の電子機
器の高性能化、小型化にいは目ざましいものがあり、こ
れらの電子機器の電源となる電池の重負荷特性の改善や
高容量化への要求も強まってきている。こうした小型電
子機器用電池としては、マンガン乾電池やアルカリマン
ガン乾電池が従来から用いられているが、最近はリチウ
ムを負極材料とし、硫化鉄を正極材料として用いたリチ
ウム硫化鉄電池が、保存性が良く且つ従来の電池とも電
圧の互換性のある１、５■を示すとして着目さるように
なってきた。In recent years, there has been a remarkable increase in the performance and miniaturization of electronic devices such as video cameras and headphone stereos, and there is also a growing demand for improved heavy-load characteristics and higher capacity of the batteries that power these electronic devices. It's coming. Traditionally, manganese dry batteries and alkaline manganese dry batteries have been used as batteries for small electronic devices, but recently lithium iron sulfide batteries, which use lithium as the negative electrode material and iron sulfide as the positive electrode material, have a good shelf life. In addition, it has attracted attention because it exhibits a voltage of 1.5 cm, which is compatible with conventional batteries.
リチウムを負極材料とした電池は、一般に非水電解液を
使用しているために、水溶液系の電解液を使用している
電池と比べ、基本的に電池の内部抵抗が高く、重負荷特
性が悪い。これを補うためにリチウムマンガン電池等は
渦巻式構造が採用され効果を上げている。これは帯状電
極を渦巻型に多数回巻いて得られるもので、この方式に
より電極の反応面積は大きくとれ、大電流での放電が可
能となっている。Batteries that use lithium as the negative electrode material generally use a non-aqueous electrolyte, so compared to batteries that use an aqueous electrolyte, they basically have a higher internal resistance and less heavy load characteristics. bad. To compensate for this, lithium manganese batteries and the like have adopted a spiral structure, which has been effective. This is obtained by winding a band-shaped electrode many times in a spiral shape, and this method allows the electrode to have a large reaction area, making it possible to discharge with a large current.
しかしながら、この方式をリチウム硫化鉄電池に応用し
ようとした場合、電極を渦巻状に巻きとるときに硫化鉄
が集電体から剥離してしまい、電池が良好に作れないと
いう問題があった。However, when attempting to apply this method to a lithium iron sulfide battery, there was a problem in that the iron sulfide peeled off from the current collector when the electrode was spirally wound, making it difficult to produce a good battery.
本発明は、上述の点に鑑み、正極即ち硫化鉄の集電体か
らの剥離を防ぎ実用可能にしたリチウム硫化鉄電池を提
供するものである。In view of the above-mentioned points, the present invention provides a lithium iron sulfide battery which can be put to practical use by preventing the positive electrode, that is, iron sulfide, from peeling off from the current collector.
〔課題を解決するための手段］
本発明者らは、鋭意研究の結果、リチウム硫化鉄電池の
正極のバインダーとしてフッ素系ゴムを用いることによ
り、正極が集電体から剥離するのを防げるとの知見を得
た。[Means for Solving the Problem] As a result of extensive research, the present inventors have found that by using fluorine rubber as a binder for the positive electrode of lithium iron sulfide batteries, it is possible to prevent the positive electrode from peeling off from the current collector. I gained knowledge.
そこで、本発明に係るリチウム硫化鉄電池は、正極活物
質である硫化鉄をフッ素系ゴムをバインダーとして集電
体に塗布してなる正極（１）を用いて構成する。Therefore, the lithium iron sulfide battery according to the present invention is constructed using a positive electrode (1) formed by applying iron sulfide, which is a positive electrode active material, to a current collector using fluorine rubber as a binder.
フッ素系ゴムの配合比は硫化鉄の重量に対して３％以上
１０％未満が望ましい。フッ素系ゴムが３％より少ない
と正極即ち硫化鉄が集電体から剥離しやすくなり、１０
％以上だと硫化鉄の充填量が減少し、電池容量が少なく
なってしまうので好ましくない。The blending ratio of fluororubber is desirably 3% or more and less than 10% based on the weight of iron sulfide. If the fluorine rubber content is less than 3%, the positive electrode, that is, iron sulfide, will easily peel off from the current collector,
% or more is not preferable because the amount of iron sulfide charged decreases and the battery capacity decreases.
フッ素系ゴムは、フッ素原子を含有するゴム状物質のこ
とであり、その代表的なものは、トリフルオロクロルエ
チレンとフッ化ビニリデンの共重合体
或はヘキサフルオロプロピレンとフッ化ビニリデンの共
重合体
等が挙げられる。このゴムの弾性は構造に起因しており
網目状に分子がからんでいるのでゴム状となる。こうし
たフッ素系ゴムの添加剤としては一般に加硫剤としてボ
リア短ン、ポリオール、ペルオキシド等が用いられてお
り、フッ素系ゴム１００ｇに対して０．１〜５ｇ程度添
加される。Fluorine rubber is a rubber-like substance containing fluorine atoms, and typical examples are copolymers of trifluorochloroethylene and vinylidene fluoride or copolymers of hexafluoropropylene and vinylidene fluoride. etc. The elasticity of this rubber is due to its structure, and the molecules are entangled in a network, giving it a rubber-like appearance. As additives for such fluororubbers, boria trichloride, polyols, peroxides, etc. are generally used as vulcanizing agents, and about 0.1 to 5g are added to 100g of fluororubber.
上述の構成のリチウム硫化鉄電池においては、フッ素系
ゴムをバインダーとして硫化鉄を集電体に塗布してなる
正極（１）を用いることにより、正極（１）を負極（２
）と共に渦巻状に巻回した場合にも硫化鉄が集電体から
剥離せず、正極としての信頼性が保持される。In the lithium iron sulfide battery configured as described above, the positive electrode (1) is made of a current collector coated with iron sulfide using fluorine rubber as a binder.
), the iron sulfide does not peel off from the current collector, and its reliability as a positive electrode is maintained.
（実施例〕 以下、第１図に従って実施例を説明する。(Example〕 An embodiment will be described below with reference to FIG.
実施例
本実施例ではバインダーに用いるフッ素ゴムとしては、
ヘキサフルオロプロピレンとフッ化ビニリデンを主体と
した共重合体、
（ＣＨｚ’ＣＦｚチ、（ＣＦ、 ＣＦ＋。Example In this example, the fluororubber used for the binder is as follows:
A copolymer mainly composed of hexafluoropropylene and vinylidene fluoride, (CHz'CFz, (CF, CF+).
ＣＦ。C.F.
で平均分子量約６００００のフッ素ゴムを用いた。A fluororubber having an average molecular weight of about 60,000 was used.
フッ素ゴムの配合比が硫化鉄の重量に対して、それぞれ
２％、３％、５％、７％、 １０％になるように硫化鉄
とフッ素ゴム水性塗料（フッ素ゴム５０％含有）を混合
し、これに水を加えて集電体に塗布するのに適度な粘度
を有するようにした第１表に示す組成のペーストを作成
した。これを正極集電体としての厚さ３０μｍ１幅３０
ｍ５＋ 、長さ１７０ｍｍの帯状のアルミニウム箔の両
面に均一に塗布して、乾燥した後、１５０°Ｃで１時間
熱して、これをローラープレス機により圧縮成型して帯
状の正極（１）を作成した。この帯状の正極（１）にお
いて、正極活物質は正極集電体の両面に互いにほぼ同じ
膜厚で形成してあり、正極（１）の厚さとしては３００
ｔｔ ｙａであった。Iron sulfide and fluororubber water-based paint (containing 50% fluororubber) were mixed so that the compounding ratio of fluororubber was 2%, 3%, 5%, 7%, and 10%, respectively, based on the weight of iron sulfide. A paste having the composition shown in Table 1 was prepared by adding water to the paste to have an appropriate viscosity for application to a current collector. This is used as a positive electrode current collector with a thickness of 30 μm and a width of 30 μm.
m5+, uniformly applied to both sides of a strip-shaped aluminum foil with a length of 170 mm, dried, heated at 150°C for 1 hour, and compression-molded using a roller press machine to create a strip-shaped positive electrode (1). did. In this strip-shaped positive electrode (1), the positive electrode active material is formed on both sides of the positive electrode current collector with approximately the same film thickness, and the thickness of the positive electrode (1) is 300 mm.
It was ttya.
また、厚さ３００ ｐ ｍ、幅３０Ｒ１１Ｉ＋のリチウ
ムを長さ１８３ｍｍに切断して、負極（２）を作った。Further, a negative electrode (2) was made by cutting lithium having a thickness of 300 pm and a width of 30R11I+ into a length of 183 mm.
上記正極（１）及び負極（２）を用い、さらにセパレー
タ（３）を一対用いて、これらを互に積層させてから、
多数回巻回することによって、渦巻型の巻回体（４）を
作った。このとき、第１表に示される５種類の電極ａ
−ｅのうち、硫化鉄に対しフッ素ゴムの配合比が２％の
電極ａは正極活物質である硫化鉄が正極集電体から脱落
してしまい、この巻回体（４）が作れなかった。Using the above positive electrode (1) and negative electrode (2), and further using a pair of separators (3), and stacking them on each other,
A spirally wound body (4) was made by winding a large number of turns. At this time, the five types of electrodes a shown in Table 1
Of -e, for electrode a with a 2% blending ratio of fluororubber to iron sulfide, iron sulfide, which is the positive electrode active material, fell off from the positive electrode current collector, and this wound body (4) could not be made. .
残りの電極す、電極Ｃ１電極ｄ、電極ｅを用いて作成し
た巻回体（４）を、第１図に示すように、ニッケルめっ
きを施した内径１３．３ｍｍの鉄製電池缶（５）に収納
した。そして正極（１）の集電を行うためにアルミニウ
ム製の正極リード（６）を正極（１）に取付け、これを
正極（１）から導出して電池蓋を構成する中間蓋体（防
爆弁）（７）に溶接した。また負極（２）の集電を行う
ために、ニッケル製の負極リード（９）を負極（２）に
取り付け、これを負極（２）から導出して電池缶（５）
に溶接した。The wound body (4) made using the remaining electrodes, electrode C1, electrode d, and electrode e, was placed in a nickel-plated iron battery can (5) with an inner diameter of 13.3 mm, as shown in Figure 1. I put it away. Then, in order to collect current from the positive electrode (1), an aluminum positive electrode lead (6) is attached to the positive electrode (1), and this is led out from the positive electrode (1) to form an intermediate lid body (explosion-proof valve) that forms the battery lid. (7) was welded. In addition, in order to collect current from the negative electrode (2), a nickel negative electrode lead (9) is attached to the negative electrode (2), which is led out from the negative electrode (2) and placed in the battery can (5).
Welded to.
この電池缶（５）の中に過塩素酸リチウムを１モル／ｌ
溶解した炭酸プロピレンと１，２−ジメトキシエタンと
を混合して得た電解液を注入した。巻回体（４）の上下
面に対向するように、電池缶（５）内に絶縁板（１０Ａ
）及び（ＩＯＢ）を配設した。This battery can (5) contains 1 mol/l of lithium perchlorate.
An electrolytic solution obtained by mixing dissolved propylene carbonate and 1,2-dimethoxyethane was injected. An insulating plate (10A
) and (IOB) were arranged.
また、この電池缶（５）と中間蓋体（７）及び閉塞蓋体
（８）からなる電池１１Ｆ（１１）を絶縁封口ガスケッ
ト（１２）を介してかしめて、電池蓋（１１）を封口し
た。以上のようにして、直径１３．８ｍｍ、高さ５０ｍ
ｍの１．５Ｖ系の円筒型渦巻式リチウム硫化鉄電池（１
３）を作成した。Further, the battery 11F (11) consisting of the battery can (5), the intermediate lid (7), and the closing lid (8) was caulked through an insulating sealing gasket (12) to seal the battery lid (11). . As above, the diameter is 13.8 mm and the height is 50 m.
m 1.5V cylindrical spiral type lithium iron sulfide battery (1
3) was created.
第１表
電極す、電極Ｃ１電極ｄ、電極ｅを用いて作った電池を
１６０ｍＡの定電流で終止電圧０．９Ｖまで放電させた
。この時の放電容量を第２図に示す。この図に示される
ように、硫化鉄に対しフッ素ゴＬの配合比が多いものほ
ど、硫化鉄の充填量が少なくなるために容量が取り出せ
なくなる。硫化鉄に対しフッ素ゴムの配合比がｌ０％以
上では、容量が２、５Ａ）ｌ以下になってしまった。A battery made using the first front electrode S, the electrode C1, the electrode d, and the electrode e was discharged to a final voltage of 0.9 V at a constant current of 160 mA. The discharge capacity at this time is shown in FIG. As shown in this figure, the larger the blending ratio of fluorine rubber L to iron sulfide is, the smaller the amount of iron sulfide filled becomes, making it difficult to extract the capacity. When the blending ratio of fluororubber to iron sulfide was 10% or more, the capacity became 2.5 A) or less.
一方、比較例として渦巻式電極に広く用いられているバ
インダー、ポリフッ化ビニリデンを用いて電池の作成を
試みた。On the other hand, as a comparative example, we attempted to create a battery using polyvinylidene fluoride, a binder widely used in spiral electrodes.
比較例
ポリフッ化ビニリデンの配合比が硫化鉄の重量に対して
、それぞれ２％、３％、５％、７％、１０％になるよう
に、硫化鉄とポリフッ化ビニリデンを混合し、これにＮ
−メチル２−ピロリドンを加えて集電体に塗布するのに
適度な粘度を有するようにした第２表に示す組成のペー
スとを作成した。Comparative Example Iron sulfide and polyvinylidene fluoride were mixed so that the blending ratio of polyvinylidene fluoride was 2%, 3%, 5%, 7%, and 10%, respectively, based on the weight of iron sulfide, and N
- A paste having the composition shown in Table 2 was prepared by adding methyl 2-pyrrolidone so as to have an appropriate viscosity for coating on a current collector.
これを正極集電体としての厚さ３０μｍ１幅３０ｍｍ、
長さ１７０ｍｍの帯状のアルミニウム箔の両面に均一に
塗布して乾燥した後、これをローラープレス機により圧
縮成型して帯状の正極（１）を作った。This was used as a positive electrode current collector with a thickness of 30 μm and a width of 30 mm.
After uniformly coating both sides of a strip-shaped aluminum foil with a length of 170 mm and drying, this was compression-molded using a roller press to produce a strip-shaped positive electrode (1).
この帯状の正極（１）において、正極活物質は正極集電
体の両面に互いにほぼ同じ膜厚で形成してあり、正極の
厚さとしては３００μ麟であった。In this strip-shaped positive electrode (1), the positive electrode active material was formed on both sides of the positive electrode current collector with approximately the same film thickness, and the thickness of the positive electrode was 300 μm.
また、厚さ３００μｍ１幅３０ｍｍのリチウムを長さ１
８３１に切断して負極（２）を作った。In addition, a piece of lithium with a thickness of 300 μm and a width of 30 mm is
A negative electrode (2) was made by cutting the electrode into 831 pieces.
上記正極（１）及び負極（２）を用い、さらにセパレー
タ（３）を一対相いて、これらを互いに積層させてから
、多数回巻回したところ、第２表に示される５種類の電
極ｇ、電極り、電極ｉ、電極ｊ、電極には全て硫化鉄が
集電体から脱落してしまい、巻回体が作れなかった。Using the above positive electrode (1) and negative electrode (2), a pair of separators (3) were stacked on top of each other, and then wound a large number of times, the five types of electrodes g shown in Table 2 were obtained. Iron sulfide fell off from the current collector in all of the electrodes, electrode i, electrode j, and electrode, and a wound body could not be formed.
第２表
上述の実施例によれば、リチウム硫化鉄電池の正極のバ
インダーとしてフッ素系ゴムを用いることにより正極活
物質が集電体から剥離するのを防ぐことができる。従っ
て、これにより、重負荷放電に効果のある渦巻式構造を
有するリチウム硫化鉄電池の作成が可能となり、重負荷
特性に優れ、保存性がよく、かつ従来の電池とも電圧の
互換性のある電池を提供できる。According to the above-mentioned examples in Table 2, by using fluorine rubber as a binder for the positive electrode of a lithium iron sulfide battery, it is possible to prevent the positive electrode active material from peeling off from the current collector. Therefore, this makes it possible to create a lithium iron sulfide battery with a spiral structure that is effective for heavy load discharge, and has excellent heavy load characteristics, good storage stability, and voltage compatibility with conventional batteries. can be provided.
［発明の効果］
本発明のリチウム硫化鉄電池によれば、正極のバインダ
ーとしてフッ素系ゴムを用いることにより、硫化鉄の正
極集電体からの剥離を防せぐことかできる。従って、重
負荷放電に効果のある渦巻式構造を有するリチウム硫化
鉄電池の作成が可能となり、重負荷特性に優れ、保存性
が良く、かつ従来の電池とも電圧の互換性のあるリチウ
ム硫化鉄電池を提供でき、その工業的価値は大である。[Effects of the Invention] According to the lithium iron sulfide battery of the present invention, by using fluorine rubber as a binder for the positive electrode, it is possible to prevent iron sulfide from peeling off from the positive electrode current collector. Therefore, it is possible to create a lithium iron sulfide battery with a spiral structure that is effective for heavy load discharge, and has excellent heavy load characteristics, good storage stability, and voltage compatibility with conventional batteries. It has great industrial value.
第１図は本発明に係るリチウム硫化鉄電池の一例を示す
断面図、第２図は硫化鉄に対するフッ素系ゴム配合比と
リチウム硫化鉄電池の放電容量の関係を示すグラフであ
る。
（１）は正極、
（２）は負極、
（３）はセパレータ、
〈４）は巻
囲体、（５）は電池缶、
（１１）は電池蓋である。
代
理
人
松
隈
秀
盛
第
図
ゑｅｉｉ仲ｓｌｌ
＼ イFIG. 1 is a cross-sectional view showing an example of a lithium iron sulfide battery according to the present invention, and FIG. 2 is a graph showing the relationship between the fluorine rubber compounding ratio to iron sulfide and the discharge capacity of the lithium iron sulfide battery. (1) is a positive electrode, (2) is a negative electrode, (3) is a separator, <4) is a winding body, (5) is a battery can, and (11) is a battery lid. Agent Hidemori Matsukuma Diagram Eeii Nakasll ＼ I
Claims (1)
されてなる正極を有して成るリチウム硫化鉄電池。A lithium iron sulfide battery comprising a positive electrode made of iron sulfide coated on a current collector using fluorine rubber as a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015769A JP2932563B2 (en) | 1990-01-25 | 1990-01-25 | Lithium iron sulfide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015769A JP2932563B2 (en) | 1990-01-25 | 1990-01-25 | Lithium iron sulfide battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03222258A true JPH03222258A (en) | 1991-10-01 |
| JP2932563B2 JP2932563B2 (en) | 1999-08-09 |
Family
ID=11898009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015769A Expired - Fee Related JP2932563B2 (en) | 1990-01-25 | 1990-01-25 | Lithium iron sulfide battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2932563B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5432030A (en) * | 1993-12-02 | 1995-07-11 | Eveready Battery Company, Inc. | Li/FeS2 cell employing a solvent mixture of diox, DME and 3ME20X with a lithium-based solute |
| US5565284A (en) * | 1992-12-25 | 1996-10-15 | Tdk Corporation | Lithium secondary cell |
| JPH11283615A (en) * | 1998-03-26 | 1999-10-15 | Tdk Corp | Manufacture of electrode for nonaqueous electrolyte battery |
| WO2008029366A2 (en) * | 2006-09-06 | 2008-03-13 | The Gillette Company | Lithium cell |
-
1990
- 1990-01-25 JP JP2015769A patent/JP2932563B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565284A (en) * | 1992-12-25 | 1996-10-15 | Tdk Corporation | Lithium secondary cell |
| US5432030A (en) * | 1993-12-02 | 1995-07-11 | Eveready Battery Company, Inc. | Li/FeS2 cell employing a solvent mixture of diox, DME and 3ME20X with a lithium-based solute |
| JPH11283615A (en) * | 1998-03-26 | 1999-10-15 | Tdk Corp | Manufacture of electrode for nonaqueous electrolyte battery |
| WO2008029366A2 (en) * | 2006-09-06 | 2008-03-13 | The Gillette Company | Lithium cell |
| WO2008029366A3 (en) * | 2006-09-06 | 2008-05-15 | Gillette Co | Lithium cell |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2932563B2 (en) | 1999-08-09 |
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|---|---|---|---|
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