JPH02148654A - Nonaqueous electrolytic battery - Google Patents
Nonaqueous electrolytic batteryInfo
- Publication number
- JPH02148654A JPH02148654A JP30288688A JP30288688A JPH02148654A JP H02148654 A JPH02148654 A JP H02148654A JP 30288688 A JP30288688 A JP 30288688A JP 30288688 A JP30288688 A JP 30288688A JP H02148654 A JPH02148654 A JP H02148654A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- discharge
- positive
- carbonaceous porous
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 8
- 239000011149 active material Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 239000007774 positive electrode material Substances 0.000 abstract description 6
- 229910052759 nickel Inorganic materials 0.000 abstract description 5
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000005470 impregnation Methods 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract 3
- 239000011343 solid material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000011255 nonaqueous electrolyte Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- SOZVEOGRIFZGRO-UHFFFAOYSA-N [Li].ClS(Cl)=O Chemical compound [Li].ClS(Cl)=O SOZVEOGRIFZGRO-UHFFFAOYSA-N 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001537 lithium tetrachloroaluminate Inorganic materials 0.000 description 1
- MPDOUGUGIVBSGZ-UHFFFAOYSA-N n-(cyclobutylmethyl)-3-(trifluoromethyl)aniline Chemical compound FC(F)(F)C1=CC=CC(NCC2CCC2)=C1 MPDOUGUGIVBSGZ-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- JLUPXGQVEKNGEJ-UHFFFAOYSA-N sulfuryl dichloride;thionyl dichloride Chemical compound ClS(Cl)=O.ClS(Cl)(=O)=O JLUPXGQVEKNGEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/06—Electrodes for primary cells
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、リチウム金属などのアルカリ金属を負極活物
質とし、常温で液体であるオキシ−・ロゲン化物などを
正極活物質および電解質の溶媒とし、炭素質多孔体を正
極とする非水電解質電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention uses an alkali metal such as lithium metal as a negative electrode active material, an oxy-halogenide, which is liquid at room temperature, as a positive electrode active material and an electrolyte solvent, and carbon The present invention relates to a non-aqueous electrolyte battery using a porous material as a positive electrode.
従来の技術
リチウムなどのアルカリ金属を負極活物質とし、常温で
液体であるオキシノ〜ロゲン化物、例えば塩化チオニル
塩化スルフリルなどを正極活物質および電解液の溶媒と
する非水電解液電池では、正極にはアセチレンブラック
を主とする炭素質多孔体が用いられている（例えば特公
昭５９−２８９４７号公報、特開昭６１−１９０６７号
公報）。Conventional technology In non-aqueous electrolyte batteries, in which an alkali metal such as lithium is used as the negative electrode active material, and an oxyno-halogenide that is liquid at room temperature, such as thionyl chloride sulfuryl chloride, is used as the positive electrode active material and the electrolyte solvent, the positive electrode A carbonaceous porous material mainly composed of acetylene black is used (for example, Japanese Patent Publication No. 59-28947 and Japanese Patent Application Laid-open No. 61-19067).
上記の炭素質多孔体はアセチレンブラック、黒鉛などの
炭素材料とポリテトラフルオロエチレンなどのフッ素系
樹脂バインダーから成り、リチウムイオンなどのアルカ
リ金属イオンとオキシ−・ロゲン化物などの液体活物質
との放電反応の場となるものである。従って、電解液で
もある液体活物質の含浸を良くシ、放電反応生成物の蓄
積による放電反応の阻害を防ぐために、微細な空隙を多
数形成したものが良いとされており、空隙率８０％程度
が必要とされている。The above-mentioned carbonaceous porous material is made of carbon materials such as acetylene black and graphite and fluororesin binders such as polytetrafluoroethylene, and discharges between alkali metal ions such as lithium ions and liquid active materials such as oxy- and halides. It serves as a place for reactions. Therefore, in order to ensure good impregnation with the liquid active material, which is also an electrolytic solution, and to prevent the discharge reaction from being inhibited by the accumulation of discharge reaction products, it is recommended that a material with many fine voids be formed, with a porosity of approximately 80%. is needed.
一方、空隙率が大きくなると導電材である炭素粒子間或
いは炭素粒子と正極集電体との間の接触が悪くなり、炭
素質正極内での集電が悪くなる。On the other hand, when the porosity increases, the contact between carbon particles serving as a conductive material or between carbon particles and a positive electrode current collector deteriorates, and current collection within the carbonaceous positive electrode deteriorates.
電極の集電効率を向上させる一般的な方法の一つとして
炭素質導電性被膜を形成することが知られている（例え
ば特開昭５８−４８３６１号公報）。Forming a carbonaceous conductive film is known as one of the general methods for improving the current collection efficiency of an electrode (for example, Japanese Patent Laid-Open No. 48361/1983).
また炭素質とチタン等の金属粉末との混合物の導電性被
膜を形成することにより、さらに導電性を改良できると
されている（特開昭５６−１６６６４９号公報）。Furthermore, it is said that the conductivity can be further improved by forming a conductive film of a mixture of carbonaceous material and metal powder such as titanium (Japanese Patent Application Laid-Open No. 166649/1984).
発明が解決しようとする課題
上記従来のオキシハロゲン化物などの液体正極活物質を
用いた電池の問題点を、第２図に示す構造のリチウム塩
化チオニル円筒形電池を一例として説明する。Problems to be Solved by the Invention The problems of the above conventional batteries using liquid positive electrode active materials such as oxyhalides will be explained using a lithium thionyl chloride cylindrical battery having the structure shown in FIG. 2 as an example.
第２図において２１は負極端子を兼ねるステンレス鋼製
の電池ケース、２は金属リチウム負極、３はガラス繊維
製筒状セパレータである。４は炭素質多孔体正極であり
、アセチレンブラック、人造黒鉛、ポリテトラフルオロ
エチレンバインターよりなる。６は電池蓋で、その外周
部は前記電池ケース１の開口部と溶接されており、電池
蓋５の中央部にはガラス繊維製６により絶縁された正極
端子７が設けられている。正極端子７はニッケル製の正
極集電棒８と上端部が溶接されている。９は電解液兼正
極活物質であり、塩化チオニルに電解質のリチウムテト
ラクロロアルミネート（ＬｉムＩＣｇ４）を１．５モル
／ｌ溶解させたものである。１ｏはガラス繊維製の上紙
である。In FIG. 2, 21 is a stainless steel battery case which also serves as a negative electrode terminal, 2 is a metal lithium negative electrode, and 3 is a glass fiber cylindrical separator. 4 is a carbonaceous porous positive electrode, which is made of acetylene black, artificial graphite, and polytetrafluoroethylene binder. Reference numeral 6 denotes a battery lid, the outer periphery of which is welded to the opening of the battery case 1, and a positive electrode terminal 7 insulated by a glass fiber 6 is provided in the center of the battery lid 5. The upper end of the positive electrode terminal 7 is welded to a positive electrode current collector rod 8 made of nickel. Reference numeral 9 denotes an electrolytic solution/positive electrode active material, which is obtained by dissolving lithium tetrachloroaluminate (Limu ICg4) as an electrolyte in thionyl chloride at a concentration of 1.5 mol/l. 1o is a top paper made of glass fiber.
炭素質多孔体正極４の空隙率が小さく、炭素粒子の密度
が高い場合には、正極集電棒８と正極４の炭素粒子との
接触が十分良く、内部抵抗の小さい電池が得られるが、
正極活物質兼電解液である塩化チオニルの正極内部への
含浸が不十分であるため、放電反応が負極２近傍の正極
表面に集中する。従って、放電反応生成物である塩化リ
チウム。When the porosity of the carbonaceous porous positive electrode 4 is small and the density of carbon particles is high, the contact between the positive electrode current collector rod 8 and the carbon particles of the positive electrode 4 is sufficiently good, and a battery with low internal resistance can be obtained.
Since thionyl chloride, which is the positive electrode active material and electrolyte, is not sufficiently impregnated into the inside of the positive electrode, the discharge reaction concentrates on the surface of the positive electrode near the negative electrode 2. Therefore, lithium chloride, which is a discharge reaction product.
イオン等の固形物が正極表面に堆積し、正極内部へのリ
チウムイオンの拡散が阻害され、十分な放電容量が得ら
れないという課題を有していた。Solid matter such as ions accumulates on the surface of the positive electrode, inhibiting the diffusion of lithium ions into the interior of the positive electrode, resulting in a problem in that sufficient discharge capacity cannot be obtained.
また、正極４の空隙率が十分に大きい場合には、正極内
部への塩化チオニル電解液が十分に含浸できるが、正極
内の炭素粒子と正極集電棒８との接触が不十分となるた
め、電池の内部抵抗が増大し。In addition, when the porosity of the positive electrode 4 is sufficiently large, the thionyl chloride electrolyte can be sufficiently impregnated into the inside of the positive electrode, but contact between the carbon particles in the positive electrode and the positive electrode current collector rod 8 becomes insufficient. The internal resistance of the battery increases.
かつ不安定となった。従って放電時の電池電圧の低減或
いは電池電圧が不安定で変動するという課題を有してい
た。And it became unstable. Therefore, there has been a problem that the battery voltage during discharging is reduced or the battery voltage is unstable and fluctuates.
本発明は上記従来の課題を解決するもので、放電容量が
大きくかつ安定した放電電圧を得ることができる非水電
解質電池を提供することを目的としている。The present invention solves the above-mentioned conventional problems, and aims to provide a non-aqueous electrolyte battery that has a large discharge capacity and can obtain a stable discharge voltage.
課題を解決するための手段
この課題を解決するために本発明の非水電解質電池は、
炭素質多孔体正極の空隙率を８０〜９０％とし、かつ正
極集電体の表面に炭素とニッケル微粉末を導電材とし水
ガラスを結着材とする導電層を形成したことを特徴とす
る。Means for Solving the Problem In order to solve this problem, the non-aqueous electrolyte battery of the present invention has the following features:
The carbonaceous porous positive electrode has a porosity of 80 to 90%, and a conductive layer comprising carbon and nickel fine powder as conductive materials and water glass as a binder is formed on the surface of the positive electrode current collector. .
作用
上記構成によると、炭素質多孔体正極の空隙率が８０〜
９０％と大きくなり、正極内の炭素粒子密度が小さくな
っても正極集電体表面の導電層により良好な電子伝導が
得られる。導電層中のニッケル粉末は導電作用だけでな
く放電反応の触媒的作用と、また水ガラスとともに導電
層の効果的な凹凸を形成している。導電層の結着材とし
ては水ガラスが最も効果的であり、かつ耐化学薬品性も
優れていて望ましいものである。他の樹脂等の結着材で
は１例えばフェノール樹脂、エポキシ樹脂は、オキシハ
ロゲン化物等と反応、溶解してしまうため、実使用上で
効果が得られないか、逆に悪影響が表われる。Effect According to the above configuration, the porosity of the carbonaceous porous positive electrode is 80~
90%, and even if the carbon particle density in the positive electrode becomes small, good electron conduction can be obtained by the conductive layer on the surface of the positive electrode current collector. The nickel powder in the conductive layer not only has a conductive effect, but also has a catalytic effect in the discharge reaction, and together with water glass forms an effective unevenness of the conductive layer. Water glass is the most effective binder for the conductive layer, and is also desirable because it has excellent chemical resistance. Binding materials such as other resins, such as phenol resins and epoxy resins, react with and dissolve in oxyhalides and the like, so that they are not effective in practical use or, on the contrary, have adverse effects.
また、炭素質多孔体正極の空隙率が８０〜９０％と大き
いために、オキシ−・ロゲン化物等の正極液体活物質兼
電解液の正極内部への含浸が十分に行なわれ、放電反応
が炭素質多孔体表面に局在化することなく、正極内部ま
で均一に進行するため。In addition, since the porosity of the carbonaceous porous positive electrode is as high as 80 to 90%, the inside of the positive electrode is sufficiently impregnated with the positive electrode liquid active material and electrolyte such as oxy-halogenide, and the discharge reaction is carried out with the carbonaceous material. Because it progresses uniformly to the inside of the positive electrode without being localized on the surface of the porous material.
高率放電の場合でも大きな放電容量を得ることができる
。Even in the case of high rate discharge, a large discharge capacity can be obtained.
実施例
以下２本発明の一実施例について１図面を参照しながら
説明する。Embodiment Two embodiments of the present invention will be described below with reference to one drawing.
第１図は本発明に係るリチウム−塩化チオニル円筒形電
池の断面図であり、その基本的構造は従来のものと同様
であるが、正極集電棒８の表面に導電層が形成され、炭
素質多孔体正極４内に圧入されている。FIG. 1 is a cross-sectional view of a lithium-thionyl chloride cylindrical battery according to the present invention. Its basic structure is the same as that of the conventional battery, but a conductive layer is formed on the surface of the positive electrode current collector rod 8, and a carbonaceous It is press-fitted into the porous positive electrode 4.
上記導電層は炭素導電性塗料バニーー・イトＩｖ−９６
（日本黒鉛工業（株）製）１００重量部に対して粒径６
〜１０μのニッケル粉末１０重量部と水６０重を部を加
えて十分に混合攪拌を行なった後、正極集電棒８にディ
ッピングにより塗布し。The above conductive layer is carbon conductive paint Bunnyite Iv-96.
(manufactured by Nippon Graphite Industries Co., Ltd.) Particle size 6 per 100 parts by weight
10 parts by weight of nickel powder of ~10 μm and 60 parts by weight of water were thoroughly mixed and stirred, and then applied to the positive electrode current collector rod 8 by dipping.
１００℃予備乾燥の後３５０℃で３時間乾燥焼結させて
形成したものである。It was formed by preliminary drying at 100°C and then drying and sintering at 350°C for 3 hours.
また、炭素質多孔体正極４はアセチンングラ１２９０重
景部と人造黒鉛１０重量部との混合物にポリテトラフル
オロエチレンのディスバージョン（固形分６０％）２６
重量部、水２５０重量部訃よびメタノール１６０重量部
を加えて混練したものを、乾燥後粉砕し、直径１０１１
！ｆ、高さ３ｏＨの円柱状に加圧成型したものである。In addition, the carbonaceous porous positive electrode 4 was prepared by dispersing polytetrafluoroethylene (solid content: 60%) into a mixture of acetingla 1290 and 10 parts by weight of artificial graphite.
Part by weight, 250 parts by weight of water and 160 parts by weight of methanol were added and kneaded, dried and pulverized to give a diameter of 1011 mm.
! f, pressure molded into a cylindrical shape with a height of 3oH.
負極２は厚み０．８ｆｌの金属リチウムを幅３７１ｆｆ
、高さ３６１Ｍに切断し電池ケース１内壁に圧着させた
ものである。Negative electrode 2 is made of metallic lithium with a thickness of 0.8 fl and a width of 371 ff.
, and was cut to a height of 361M and crimped to the inner wall of the battery case 1.
第３図は２０℃ ３００Ω連続放電特性を示したもので
、１は本実施例の特性であり、炭素質多孔体正極４の空
隙率は８５％のものである。２は従来例の構造で同様に
空隙率８５％の正極を用いたものである。FIG. 3 shows the 300Ω continuous discharge characteristics at 20° C., where 1 is the characteristic of this example, and the porosity of the carbonaceous porous positive electrode 4 is 85%. Reference numeral 2 has a conventional structure, similarly using a positive electrode with a porosity of 85%.
２の従来例の電池では、放電初期から電圧が低く、放電
中に異常な電圧降下現象が見られ、特に放電末期でに非
常に不安定となり、実用性に乏しい。一方、４の実施例
の電池では、放電電圧が高くまた安定しており、放電容
量も大きく、正極集電体表面の導電層の効果により正極
側での電子伝導が良好でかつ安定していることが分る。In the battery of the conventional example No. 2, the voltage is low from the beginning of discharge, an abnormal voltage drop phenomenon is observed during discharge, and the battery becomes extremely unstable especially at the end of discharge, making it impractical. On the other hand, in the battery of Example 4, the discharge voltage is high and stable, the discharge capacity is large, and the electron conduction on the positive electrode side is good and stable due to the effect of the conductive layer on the surface of the positive electrode current collector. I understand.
本実施例では炭素質多孔体正極の空隙率が８６％の場合
のみ示したが、空隙率が８０％よりも小さいと、液体活
物質兼電解液の塩化チオニル電解液の正極４内への含浸
が不十分であり、放電反応の正極表面への局在化により
本発明の効果は余り見られない。また、空隙率が９０％
より大きい場合には、放電反応の場となる炭素量が少な
いため。In this example, only the case where the porosity of the carbonaceous porous positive electrode is 86% is shown, but if the porosity is smaller than 80%, the thionyl chloride electrolyte that serves as the liquid active material and electrolyte may be impregnated into the positive electrode 4. is insufficient, and the effect of the present invention is not seen much because the discharge reaction is localized on the surface of the positive electrode. In addition, the porosity is 90%
If it is larger, the amount of carbon that serves as a site for the discharge reaction is small.
放電電圧、放電容量とも小さくなり、本発明の効果は見
られなかった。Both the discharge voltage and discharge capacity became small, and the effect of the present invention was not observed.
発明の効果
以上のように本発明は、空隙率８０〜９ｏ％の炭素質多
孔体正極と、正極集電体表面に炭素とニッケルと水ガラ
スから成る導電層を形成することによって、放電電圧が
高くかつ安定し、放電容量の大きな電池を提供すること
ができた。Effects of the Invention As described above, the present invention has a carbonaceous porous positive electrode with a porosity of 80 to 90% and a conductive layer made of carbon, nickel, and water glass formed on the surface of the positive electrode current collector, thereby increasing the discharge voltage. We were able to provide a battery that is highly efficient, stable, and has a large discharge capacity.
【図面の簡単な説明】
第１図は本発明に係る非水電解質電池の一実施例を示す
断面図、第２図は従来の電池の一例を示す断面図、第３
図は本発明の実施例の電池と従来例の電池の３００Ω連
続放電での放電特性図である。
２・・・・・・負極、３・・・・・・セパレータ、４・
・・・・・炭素質多孔体正極、８・・・・・・正極集電
棒、１１・・・・・・導電層。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名第３
図
将砕ｌ今間 （Ｈ）
区
〇−
必
〇−[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a sectional view showing an embodiment of the non-aqueous electrolyte battery according to the present invention, FIG. 2 is a sectional view showing an example of a conventional battery, and FIG. 3 is a sectional view showing an example of a conventional battery.
The figure is a discharge characteristic diagram of a battery according to an embodiment of the present invention and a conventional battery at 300Ω continuous discharge. 2... Negative electrode, 3... Separator, 4...
... Carbonaceous porous positive electrode, 8 ... Positive electrode current collector rod, 11 ... Conductive layer. Name of agent: Patent attorney Shigetaka Awano and 1 other person No. 3
Zusho Break Ima (H) Ward〇- Must〇-
Claims (1)
活物質兼電解液となる正極液体活物質と炭素質多孔体正
極と正極集電体とを有し、前記炭素質多孔体正極の空隙
率が８０〜９０％であり、かつ前記正極集電体の表面に
炭素とニッケル微粉末と水ガラスを主成分とする導電層
を形成したことを特徴とする非水電解質電池。It has a negative electrode made of an alkali metal, a glass fiber separator, a positive liquid active material serving as an active material and electrolyte, a carbonaceous porous positive electrode, and a positive electrode current collector, and the carbonaceous porous positive electrode has a porosity of 80 to 80. 90%, and a conductive layer containing carbon, fine nickel powder, and water glass as main components is formed on the surface of the positive electrode current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30288688A JPH02148654A (en) | 1988-11-30 | 1988-11-30 | Nonaqueous electrolytic battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30288688A JPH02148654A (en) | 1988-11-30 | 1988-11-30 | Nonaqueous electrolytic battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148654A true JPH02148654A (en) | 1990-06-07 |
Family
ID=17914287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30288688A Pending JPH02148654A (en) | 1988-11-30 | 1988-11-30 | Nonaqueous electrolytic battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148654A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589297A (en) * | 1993-12-29 | 1996-12-31 | Tdk Corporation | Lithium secondary cell |
| JPH11307084A (en) * | 1998-02-19 | 1999-11-05 | Matsushita Electric Ind Co Ltd | Organic electrolyte battery |
| JP2007128904A (en) * | 1998-02-19 | 2007-05-24 | Matsushita Electric Ind Co Ltd | Organic electrolyte battery |
| US20090296315A1 (en) * | 2006-11-02 | 2009-12-03 | Sumitomo Chemical Company, Limited | Electrode film, electrode and method for its production, and electric double layer capacitor |
-
1988
- 1988-11-30 JP JP30288688A patent/JPH02148654A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589297A (en) * | 1993-12-29 | 1996-12-31 | Tdk Corporation | Lithium secondary cell |
| JPH11307084A (en) * | 1998-02-19 | 1999-11-05 | Matsushita Electric Ind Co Ltd | Organic electrolyte battery |
| JP2007128904A (en) * | 1998-02-19 | 2007-05-24 | Matsushita Electric Ind Co Ltd | Organic electrolyte battery |
| US20090296315A1 (en) * | 2006-11-02 | 2009-12-03 | Sumitomo Chemical Company, Limited | Electrode film, electrode and method for its production, and electric double layer capacitor |
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