JPS61285664A - Cell structure - Google Patents
Cell structureInfo
- Publication number
- JPS61285664A JPS61285664A JP60127788A JP12778885A JPS61285664A JP S61285664 A JPS61285664 A JP S61285664A JP 60127788 A JP60127788 A JP 60127788A JP 12778885 A JP12778885 A JP 12778885A JP S61285664 A JPS61285664 A JP S61285664A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- collector electrode
- current collecting
- electrode
- collecting 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.)
- Pending
Links
Classifications
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/668—Composites of electroconductive material and synthetic resins
-
- 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
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
-
- 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
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、たとえばレドックスフロー電池のような２
次電池の電池構造に関し、特に集電極の構造が改良され
１ｃ電池構造に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is applicable to two types of batteries, such as redox flow batteries.
Regarding the battery structure of the secondary battery, in particular, the structure of the collector electrode is improved and it relates to the 1C battery structure.
従来の技術
第２図は既存の電池構造を形成するセルを模式的に示し
た斜視図である。セル１は、隔Ｉ１％２によって正極側
と負極側とに分けられ、隔膜２を挾んで両極側に反応電
極３ａ、３ｂが配置されている。BACKGROUND OF THE INVENTION FIG. 2 is a perspective view schematically showing cells forming an existing battery structure. The cell 1 is divided into a positive electrode side and a negative electrode side by a partition I1%2, and reaction electrodes 3a and 3b are arranged on both electrode sides with a partition 2 in between.
さらに反応電極３ａ 、３ｂの外側には集電極４ａ。Furthermore, a collector electrode 4a is provided on the outside of the reaction electrodes 3a and 3b.
４ｂが配置されている。4b is placed.
反応電極３ａ、３ｂおよび集電極４ａ 、４ｂは、それ
ぞれ枠５ａ、５ｂ、（３ａ、５ｂに固定され、隔膜２を
挾んで締付は固定される。枠５ａ 、 ５ｂ 。The reaction electrodes 3a, 3b and the collecting electrodes 4a, 4b are fixed to frames 5a, 5b, (3a, 5b), respectively, and are tightened with the diaphragm 2 in between.The frames 5a, 5b.
５ａ 、 ６ｂの上部に設けられた電解液導入孔７ａ。Electrolyte introduction hole 7a provided in the upper part of 5a and 6b.
７ｂ 、８ａ 、８ｂからセル内に電解液が供給され、
枠５ａ、５ｂ、５ａ、６ｂの下部に設けられた電解液排
出孔９ａ、９ｂ、１０ａ、１Ｑｂから排出される。この
電解液の酸化還元反応によって充放電が行なわれる。Electrolyte is supplied into the cell from 7b, 8a, 8b,
The electrolyte is discharged from electrolyte discharge holes 9a, 9b, 10a, and 1Qb provided at the bottom of frames 5a, 5b, 5a, and 6b. Charging and discharging are performed by the oxidation-reduction reaction of this electrolytic solution.
この種の電池構造に用いられる電解液には、塩酸などの
強酸が含まれるため、反応電極３ａ、３ｂおよび集電極
４ａ 、４ｂは、耐腐蝕性の材料により構成する必要が
ある。さらに、反応電極３ａ。Since the electrolytic solution used in this type of battery structure contains strong acids such as hydrochloric acid, the reaction electrodes 3a, 3b and the collector electrodes 4a, 4b must be made of corrosion-resistant materials. Furthermore, a reaction electrode 3a.
３ｂは電解液を自由に通過させ、集電極４ａ、４ｂは電
解液を漏洩させてはならない。したがって、通常、反応
電極３ａ、３ｂは炭素繊維、集電極４ａ、４ｂはグラフ
ァイト板で構成されている。また、隔膜２は通常、イオ
ン交換膜、多孔質膜などで構成されている。3b should allow the electrolyte to pass through freely, and the collector electrodes 4a, 4b should not leak the electrolyte. Therefore, the reaction electrodes 3a, 3b are usually made of carbon fibers, and the collector electrodes 4a, 4b are made of graphite plates. Further, the diaphragm 2 is usually composed of an ion exchange membrane, a porous membrane, or the like.
発明が解決しようとする問題点
従来の電池構造では、集電極がグラファイト板で構成さ
れていたため、集電極が衝撃に弱かった。Problems to be Solved by the Invention In the conventional battery structure, the collector electrode was composed of a graphite plate, which made the collector electrode vulnerable to impact.
そのため集電極の製造時や、電池セルを組立てて締付は
固定するとぎに、集電極が割れる場合があった。For this reason, the collector electrode may break during manufacture or when the battery cells are assembled and tightened.
集電極が割れると、電池セルから電解液が漏れ、電池の
機能に支障を来たすおそれがあった。電解液の漏洩が甚
しい場合には、電解液に含まれる強酸の腐蝕作用により
、集電極以外の部分にも故障が起こるおそれもあった。If the collector electrode were to crack, the electrolyte would leak from the battery cell, potentially interfering with battery function. If the leakage of the electrolyte was severe, there was a risk that parts other than the collector electrode would also fail due to the corrosive effect of the strong acid contained in the electrolyte.
したがって、この発明の目的は、集電極が割れにくく、
電解液の漏れによる電池機能の障害の起こりにくい電池
構造を提供することである。Therefore, the purpose of this invention is to make the collector electrode less likely to break.
It is an object of the present invention to provide a battery structure in which failure of battery function due to electrolyte leakage is less likely to occur.
問題点を解決するための手段
この発明は、正極と負極とを分ける隔膜と、この隔膜の
両側に配置される１対の反応電極と、さらにその反応電
極の外側に配置される集電極とを備える電池構造におい
て、その集電極として、樹脂１００重量部に対して金属
粉２０ないし２００重量部を混合した導電性樹脂が用い
られている。Means for Solving the Problems This invention comprises a diaphragm that separates a positive electrode and a negative electrode, a pair of reaction electrodes placed on both sides of this diaphragm, and a collector electrode placed outside the reaction electrode. In the battery structure, a conductive resin in which 20 to 200 parts by weight of metal powder is mixed with 100 parts by weight of resin is used as the collector electrode.
作用
この発明による電池構造では、集電極が、樹脂に金属粉
が混合された導電性樹脂で構成されているため、グラフ
ァイト板を集電極に用いた電池構造よりも衝撃に強い。Function: In the battery structure according to the present invention, since the collector electrode is made of a conductive resin in which metal powder is mixed with resin, it is more resistant to impact than a battery structure in which a graphite plate is used as the collector electrode.
実施例
実施例１
第１図には、この発明による電池構造に備えられる集電
極の断面図が示されている。この集電極１１は、加熱溶
融した１００重量部のポリエチレン樹脂１２に、粒径１
０ａｍの銅粉１３を５０重量部、混合し、これを熱プレ
スして厚さ３ｍｍのシート状に成形したものである。EXAMPLES Example 1 FIG. 1 shows a cross-sectional view of a collector electrode provided in a battery structure according to the present invention. This collector electrode 11 is made of 100 parts by weight of polyethylene resin 12 heated and melted with a particle size of 1
50 parts by weight of 0 am copper powder 13 was mixed and the mixture was hot pressed to form a sheet with a thickness of 3 mm.
実施例２
エポキシ樹脂１００重量部に、実施例１と同じ銅粉１０
０重量部を混合し、硬化剤を加えて厚さ３＋ａｍのシー
ト状の集電極を作製した。Example 2 10 parts by weight of the same copper powder as in Example 1 was added to 100 parts by weight of epoxy resin.
0 parts by weight were mixed and a curing agent was added to produce a sheet-like collector electrode with a thickness of 3+ am.
実施例１と実施例２との集電極および、厚さ３ｍｌｌ１
のグラファイト板について、それぞれ１０回ずつ、５ｋ
ｌＪの鉄球を１ｍ上方から落ず試験を行なった。その結
果、グラファイト板には１０回中型回、割れが生じたが
、実施例１、実施例２の集電極には、共に、１０回中型
回も割れは生じなかった。Collector electrode of Example 1 and Example 2 and thickness 3ml1
10 times each, 5k for each graphite plate.
A test was conducted by dropping an iron ball of 1J from 1m above. As a result, cracks occurred in the graphite plate after 10 medium-sized cycles, but no cracks occurred in the collector electrodes of Examples 1 and 2 even after 10 medium-sized cycles.
次に実施例１、実施例２の集電極を用いて、それぞれ第
２図のセルを５層重ねた電池を作成した。Next, using the collector electrodes of Examples 1 and 2, a battery was created in which five layers of the cells shown in FIG. 2 were stacked, respectively.
これらの電池で充放電を行なって電池効率を調べたとこ
ろ、実施例１と実施例２のどちらの集電極を用いた電池
でも、グラファイト板の集電極を用いた電池と同等の電
池効率が得られた。When these batteries were charged and discharged to examine their battery efficiency, it was found that the batteries using either the collector electrode of Example 1 or Example 2 had the same battery efficiency as the battery using the graphite plate collector electrode. It was done.
充放電を交互に３０分間ずつ、１００回繰返した後、セ
ルを解体して調べたところ、実施例１・実施例２のどち
らの集電極にも、腐蝕や劣化は全く見られなかった。After repeating charging and discharging 100 times for 30 minutes alternately, the cell was disassembled and examined, and no corrosion or deterioration was observed in either of the collector electrodes of Examples 1 and 2.
以上のことから、ポリエチレン樹脂１００重量部に銅粉
５０重量部を混合した導電性樹脂のシート、エポキシ樹
脂１００重量部に銅粉１００重量部を混合した導電性樹
脂のシートは、共にグラファイト板より割れにくいばか
りでなく、集電極としての機能についてもグラファイト
板に劣らないことが明らかになった。From the above, a sheet of conductive resin made by mixing 100 parts by weight of polyethylene resin with 50 parts by weight of copper powder and a sheet of conductive resin made by mixing 100 parts by weight of copper powder with 100 parts by weight of epoxy resin are both made from graphite plates. It has been revealed that not only is it less likely to break, but its function as a collector electrode is also comparable to graphite plates.
実施例では、金属粉として銅粉が用いられたが、これは
銅は電気抵抗が小さく、また材料費が安いためである。In the examples, copper powder was used as the metal powder because copper has low electrical resistance and is cheap in material cost.
必要に応じて、他の金属あるいは合金の粉末を用いても
よい。Powders of other metals or alloys may be used if necessary.
樹脂と金属粉との混合割合は、実施例では樹脂１００重
量部に対して、金属粉５０重量部または１００重量部で
あったが、これにさられれるものではなく、樹脂１００
重屋部に対して金属粉２０ないし２００重量部の範囲で
選べばよい。この範囲よりも金属粉の割合が少なければ
、集電極の導電性が不十分であり、この範囲より金属粉
の割合が多くなると、樹脂と金属粉との混合が困難であ
る。In the examples, the mixing ratio of the resin and the metal powder was 50 parts by weight or 100 parts by weight of the metal powder to 100 parts by weight of the resin.
The amount of metal powder may be selected in the range of 20 to 200 parts by weight based on the amount of the metal powder. If the proportion of metal powder is less than this range, the electrical conductivity of the collector electrode will be insufficient, and if the proportion of metal powder is greater than this range, it will be difficult to mix the resin and metal powder.
樹脂として、実施例ではポリエチレン樹脂およびエポキ
シ樹脂が用いられているが、その他の樹脂を用いてもよ
い。その樹脂は、熱可塑性樹脂でも硬化性樹脂でもよい
が、集電極が変形するとセル内の電解液が均一に流れな
くなるので、樹脂は硬質のものを用い、集電極をヤング
率１０’Ｎ１０１以上の材質とするのが好ましい。Although polyethylene resin and epoxy resin are used as resins in the examples, other resins may also be used. The resin may be a thermoplastic resin or a curable resin, but if the collector electrode is deformed, the electrolyte in the cell will not flow uniformly, so a hard resin is used, and the collector electrode has a Young's modulus of 10'N101 or more. It is preferable to use the material.
なお集電極の厚みは３ｍｍに限られるものではないが、
集電極が厚くなると電気抵抗が高くなるため、あまり集
電極を厚くするのは好ましくない。Note that the thickness of the collector electrode is not limited to 3 mm, but
As the collector electrode becomes thicker, the electrical resistance increases, so it is not preferable to make the collector electrode too thick.
発明の効果
以上のように、この発明による電池構造では、集電極が
、樹脂に金属粉が混合された導電性樹脂で構成されてい
るため、集電極が割れにくい。したがって、集電極の損
傷のために電解液が漏れて電池機能に支障を来たしたり
、また、電解液の漏洩が甚しい場合に、電解液中の酸の
腐蝕作用によって集電極以外の部分にまで故障が起こる
のを防ぐことができる。Effects of the Invention As described above, in the battery structure according to the present invention, since the collector electrode is made of a conductive resin in which metal powder is mixed with resin, the collector electrode is difficult to break. Therefore, if the electrolyte leaks due to damage to the collector electrode and impairs battery function, or if the leakage of electrolyte is severe, the corrosive action of the acid in the electrolyte may cause damage to parts other than the collector electrode. This can prevent breakdowns from occurring.
このような集電極を備えた電池構造は、著しく信頼性を
高めた電池構造として、レドックスフロー電池の他、各
種の２次電池に有利に利用され得る。A battery structure including such a collector electrode can be advantageously used in various secondary batteries as well as redox flow batteries as a battery structure with significantly improved reliability.
第１図は、この発明による電池構造に備えられる集電極
の断面図である。第２図は、従来の電池構造のセルの構
成を示す模式的斜？Ｒ図である。
図において、１１は集電極、１２はポリエチレン樹脂、
１３は銅粉を示す。FIG. 1 is a sectional view of a collector electrode provided in a battery structure according to the present invention. Figure 2 is a schematic diagram showing the cell configuration of a conventional battery structure. This is an R diagram. In the figure, 11 is a collector electrode, 12 is a polyethylene resin,
13 indicates copper powder.
Claims (3)
配置される１対の反応電極と、前記反応電極の外側に配
置される集電極とを備える電池構造において、 前記集電極が、樹脂１００重量部に対して金属粉２０な
いし２００重量部が混合された導電性樹脂で構成されて
いることを特徴とする電池構造。(1) A battery structure comprising a diaphragm separating a positive electrode and a negative electrode, a pair of reaction electrodes arranged on both sides of the diaphragm, and a collector electrode arranged outside the reaction electrode, wherein the collector electrode A battery structure comprising a conductive resin in which 20 to 200 parts by weight of metal powder is mixed with 100 parts by weight of the resin.
＾２以上の材質であることを特徴とする特許請求の範囲
第１項に記載の電池構造。(2) The conductive resin has a Young's modulus of 10^4 N/cm
The battery structure according to claim 1, wherein the battery structure is made of a material of ^2 or more.
する特許請求の範囲第１項または第２項に記載の電池構
造。(3) The battery structure according to claim 1 or 2, wherein copper powder is used as the metal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60127788A JPS61285664A (en) | 1985-06-12 | 1985-06-12 | Cell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60127788A JPS61285664A (en) | 1985-06-12 | 1985-06-12 | Cell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61285664A true JPS61285664A (en) | 1986-12-16 |
Family
ID=14968692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60127788A Pending JPS61285664A (en) | 1985-06-12 | 1985-06-12 | Cell structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61285664A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007128908A (en) * | 2007-01-15 | 2007-05-24 | Riken Corp | Cell unit of solid polymer electrolyte fuel cell |
| WO2010070424A1 (en) | 2008-12-19 | 2010-06-24 | Nissan Motor Co., Ltd | Electrode and production method thereof |
| JP2012513655A (en) * | 2008-12-23 | 2012-06-14 | アイティーアイ・スコットランド・リミテッド | Titanium composite electrode and manufacturing method thereof |
-
1985
- 1985-06-12 JP JP60127788A patent/JPS61285664A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007128908A (en) * | 2007-01-15 | 2007-05-24 | Riken Corp | Cell unit of solid polymer electrolyte fuel cell |
| WO2010070424A1 (en) | 2008-12-19 | 2010-06-24 | Nissan Motor Co., Ltd | Electrode and production method thereof |
| JP2012513655A (en) * | 2008-12-23 | 2012-06-14 | アイティーアイ・スコットランド・リミテッド | Titanium composite electrode and manufacturing method thereof |
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