JPH0752657B2 - Halogen battery - Google Patents
Halogen batteryInfo
- Publication number
- JPH0752657B2 JPH0752657B2 JP61024818A JP2481886A JPH0752657B2 JP H0752657 B2 JPH0752657 B2 JP H0752657B2 JP 61024818 A JP61024818 A JP 61024818A JP 2481886 A JP2481886 A JP 2481886A JP H0752657 B2 JPH0752657 B2 JP H0752657B2
- Authority
- JP
- Japan
- Prior art keywords
- gas diffusion
- cathode
- halogen battery
- diffusion electrode
- charging
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4214—Arrangements for moving electrodes or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/08—Hybrid cells; Manufacture thereof composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
- H01M12/085—Zinc-halogen cells or 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inert Electrodes (AREA)
- Hybrid Cells (AREA)
- Fuel Cell (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、電力貯蔵、電気自動車等に用いるハロゲン電
池の改良に関する。TECHNICAL FIELD The present invention relates to an improvement of a halogen battery used for electric power storage, electric vehicles and the like.
（従来の技術） 従来、ハロゲン電池の陰極には、炭素板が用いられてい
たが、充電開始時陰極の表面に発生する水素ガスが吸着
する。従って、この吸着ガスが陰極表面の金属の析出を
妨げると共に析出される金属の付着力を低下させるた
め、流せる電流が制限されて充電に長時間要し、また析
出された金属が剥離しやすく充電量も十分得られないも
のである。(Prior Art) Conventionally, a carbon plate has been used for the cathode of a halogen battery, but hydrogen gas generated on the surface of the cathode at the start of charging is adsorbed. Therefore, this adsorbed gas hinders the deposition of the metal on the cathode surface and reduces the adhesive force of the deposited metal, so that the current that can flow is limited and it takes a long time to charge, and the deposited metal is easily peeled off and charged. The amount is not enough.
そこで本発明は、充電開始時に陰極で発生する水素ガス
をすばやく吸収、拡散除去できる陰極を有するハロゲン
電池を提供せんとするものである。Therefore, the present invention provides a halogen battery having a cathode capable of quickly absorbing and diffusing and removing hydrogen gas generated at the cathode at the start of charging.
（問題点を解決するための手段） 上記問題点を解決するための本発明のハロゲン電池は、
陰極がガス拡散電極であることを特徴とするものであ
り、そのガス拡散電極は、カーボンブラックとポリ四弗
化エチレンとより成る親水層に、カーボンブラックとポ
リ四弗化エチレンとより成る疎水性のガス拡散層が接合
されて成るものである。(Means for Solving Problems) The halogen battery of the present invention for solving the above problems is
The cathode is a gas diffusion electrode, and the gas diffusion electrode comprises a hydrophilic layer made of carbon black and polytetrafluoroethylene, and a hydrophobic layer made of carbon black and polytetrafluoroethylene. The gas diffusion layers of are joined together.
（作用） 上記の如く本発明のハロゲン電池は、陰極にガス拡散電
極が用いられているので、充電開始時には陰極の陽極に
対向する親水層に発生する水素ガスをガス拡散層にすば
やく吸収拡散して親水層の反対側に放出し、陰極への金
属の析出を妨げないと共に析出される金属の付着力を高
めることができる。従って、陰極の単位面積当たりの流
せる電流が多くて充電効率が非常に高く短時間に充電で
き、また析出される金属の付着力が大きく剥離せず充電
量も十分大きくできるものである。(Operation) As described above, the halogen battery of the present invention uses the gas diffusion electrode for the cathode, so that at the start of charging, hydrogen gas generated in the hydrophilic layer facing the anode of the cathode is quickly absorbed and diffused into the gas diffusion layer. It can be released to the opposite side of the hydrophilic layer, does not hinder the deposition of the metal on the cathode, and enhances the adhesive force of the deposited metal. Therefore, a large amount of current can flow per unit area of the cathode, the charging efficiency is very high, charging can be performed in a short time, and the deposited metal has a large adhesive force and is not peeled off.
（実施例） 本発明によるハロゲン電池の一実施例を図によって説明
する。第１図に於いて、１は電解液槽で、ZnCl2、KCl、
NaClから成る水溶液２が収容されている。この水溶液２
中には陰極としてガス拡散電極３と、陽極として炭素フ
ェルトに白金族を担持した電極４が配されている。前記
ガス拡散電極３は、第２図に示す如く、平均粒径420Å
の親水性のカーボンブラックと、平均粒径0.3μのポリ
四弗化エチレン粉末とを7:3の割合で混合成形されて成
る厚さ0.1mm、幅100mm、長さ100mmの親水部と疎水部と
から成る親水層７に、平均粒径450Åの疎水性のカーボ
ンブラックと平均粒径0.3μのポリ四弗化エチレン粉末
とを7:3の割合で混合成形されて成る厚さ0.5mmの疎水性
のガス拡散層８を接合し更に多孔の集電板12を接合して
成るものである。第１図に於いて、９は気液分離槽、10
はハロゲンガス通路、11はガス貯槽、12は電解液貯蔵タ
ンク、13はポンプ、14は電解液循環通路である。(Example) An example of the halogen battery according to the present invention will be described with reference to the drawings. In FIG. 1, 1 is an electrolytic solution tank, which is ZnCl 2 , KCl,
An aqueous solution 2 consisting of NaCl is contained. This aqueous solution 2
A gas diffusion electrode 3 as a cathode and an electrode 4 having a platinum group supported on carbon felt as an anode are arranged therein. The gas diffusion electrode 3 has an average particle size of 420Å as shown in FIG.
Hydrophilic carbon black and polytetrafluoroethylene powder with an average particle size of 0.3μ are mixed and molded at a ratio of 7: 3 with a thickness of 0.1 mm, a width of 100 mm, and a length of 100 mm. A hydrophobic layer having a thickness of 0.5 mm, which is formed by mixing and molding a hydrophobic carbon black having an average particle size of 450Å and polytetrafluoroethylene powder having an average particle size of 0.3 μ at a ratio of 7: 3 in a hydrophilic layer 7 composed of The gas diffusion layer 8 having a conductive property is joined, and the porous current collector plate 12 is further joined. In FIG. 1, 9 is a gas-liquid separation tank, 10
Is a halogen gas passage, 11 is a gas storage tank, 12 is an electrolyte solution storage tank, 13 is a pump, and 14 is an electrolyte solution circulation passage.
上記の如く構成されたハロゲン電池に於いて、充電時Zn
Cl2、KCl、NaClから成る水溶液２はガス拡散電極３の親
水層７の親水部中に浸透し、そこで反応によって発生し
たH2ガスはすばやく親水層７の疎水部中に吸収されガス
拡散層８に拡散し外に放出される。電極３の表面にはZn
が析出し、ZnCl2、KCl、NaClから成る水溶液２のZn濃度
は次第に薄くなり、充電完了時には低濃度のZnCl2水溶
液となった。In the halogen battery configured as above, when charging Zn
The aqueous solution 2 consisting of Cl 2 , KCl, and NaCl penetrates into the hydrophilic part of the hydrophilic layer 7 of the gas diffusion electrode 3, and the H 2 gas generated by the reaction there is quickly absorbed in the hydrophobic part of the hydrophilic layer 7 and the gas diffusion layer. 8 diffuses and is released to the outside. Zn on the surface of electrode 3
The Zn concentration of the aqueous solution 2 consisting of ZnCl 2 , KCl, and NaCl gradually decreased, and became a low-concentration ZnCl 2 aqueous solution when charging was completed.
上記の如くガス拡散電極３の親水層７で充電開始時に発
生した水素ガスは、すばやくガス拡散層８に吸収拡散さ
れ金属の析出を妨げないので、単位時間当りの充電量は
従来の炭素板の陰極を用いたハロゲン電池に比べ５倍と
高く、充電時間が５分の１と極めて短いものであった。As described above, the hydrogen gas generated at the start of charging in the hydrophilic layer 7 of the gas diffusion electrode 3 is quickly absorbed and diffused in the gas diffusion layer 8 and does not hinder the deposition of metal. The charging time was 5 times higher than that of a halogen battery using a cathode, and the charging time was 1/5, which was extremely short.
尚、上記実施例では電解液がZnCl2水溶液であるが、CdC
l2水溶液やZnBr2水溶液でも良いものである。ZnBr2水溶
液を用いた場合は、充電時2Br-をガス化する為、60℃以
上に加熱する。In the above example, the electrolytic solution was ZnCl 2 aqueous solution, but CdC
An l 2 aqueous solution or a ZnBr 2 aqueous solution may also be used. When an aqueous solution of ZnBr 2 is used, it is heated to 60 ° C. or higher in order to gasify 2Br − during charging.
さらに陽極には炭素フェルト電極に限らずガス拡散電極
のような電極でも良い。Further, the anode is not limited to the carbon felt electrode, and an electrode such as a gas diffusion electrode may be used.
（発明の効果） 以上の説明で判るように本発明のハロゲン電池は、陰極
にガス拡散電極が用いられているので、充電開始時には
陰極の親水層に発生する水素ガスをガス拡散層にすばや
く吸収拡散し陰極への金属の析出を妨げないと共に析出
される金属の付着力が大きいものである。従って陰極の
単位面積当りの流せる電流が多くて短時間に充電でき、
また析出される金属が剥離しないので、充電量も十分大
きくできるものである。このように本発明のハロゲン電
池は充電速度が大きくしかも著しく容量アップするの
で、従来のハロゲン電池にとって代わることのできる画
期的なものと云える。(Effects of the Invention) As can be seen from the above description, the halogen battery of the present invention uses the gas diffusion electrode for the cathode, so that the gas diffusion layer quickly absorbs hydrogen gas generated in the hydrophilic layer of the cathode at the start of charging. It does not hinder the deposition of the metal on the cathode by diffusion and also has a large adhesive force for the deposited metal. Therefore, there is a lot of current that can flow per unit area of the cathode, and it can be charged in a short time,
In addition, since the deposited metal does not peel off, the charge amount can be sufficiently increased. As described above, since the halogen battery of the present invention has a high charging speed and a significantly increased capacity, it can be said to be an epoch-making one that can replace the conventional halogen battery.
第一図は本発明のハロゲン電池の一実施例を示す概略
図、第２図はそのハロゲン電池に於ける陰極としてのガ
ス拡散電極の拡大断面図である。FIG. 1 is a schematic view showing an embodiment of the halogen battery of the present invention, and FIG. 2 is an enlarged sectional view of a gas diffusion electrode as a cathode in the halogen battery.
フロントページの続き (56)参考文献 特開 昭58−197669（ＪＰ，Ａ) 特開 昭60−207250（ＪＰ，Ａ) 特開 昭59−139573（ＪＰ，Ａ)Continuation of the front page (56) Reference JP-A-58-197669 (JP, A) JP-A-60-207250 (JP, A) JP-A-59-139573 (JP, A)
Claims (2)
極であり、ガス拡散電極の親水層が電解液と接してお
り、さらにガス拡散電極のガス拡散層側がガス放出槽に
面していることを特徴とするハロゲン電池。1. In a halogen battery, the cathode is a gas diffusion electrode, the hydrophilic layer of the gas diffusion electrode is in contact with the electrolytic solution, and the gas diffusion layer side of the gas diffusion electrode faces the gas release tank. A halogen battery characterized in that
とポリ四弗化エチレンとより成る親水層に、疎水性カー
ボンブラックとポリ四弗化エチレンとより成る疎水性の
ガス拡散層が接合されたものである特許請求の範囲第１
項記載のハロゲン電池。2. A gas diffusion electrode in which a hydrophobic gas diffusion layer made of hydrophobic carbon black and polytetrafluoroethylene is bonded to a hydrophilic layer made of hydrophilic carbon black and polytetrafluoroethylene. What is claimed is: Claim 1
Halogen battery according to the item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024818A JPH0752657B2 (en) | 1986-02-06 | 1986-02-06 | Halogen battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024818A JPH0752657B2 (en) | 1986-02-06 | 1986-02-06 | Halogen battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62184775A JPS62184775A (en) | 1987-08-13 |
| JPH0752657B2 true JPH0752657B2 (en) | 1995-06-05 |
Family
ID=12148768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61024818A Expired - Lifetime JPH0752657B2 (en) | 1986-02-06 | 1986-02-06 | Halogen battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752657B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58197669A (en) * | 1982-05-11 | 1983-11-17 | Meidensha Electric Mfg Co Ltd | Electrode for layer-built cell |
| JPS59139573A (en) * | 1983-01-28 | 1984-08-10 | Meidensha Electric Mfg Co Ltd | Plastic electrodes for metal halogen batteries |
| JPS60207250A (en) * | 1984-03-30 | 1985-10-18 | Meidensha Electric Mfg Co Ltd | Electrode plate for negative electrode of zinc-bromine battery |
-
1986
- 1986-02-06 JP JP61024818A patent/JPH0752657B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62184775A (en) | 1987-08-13 |
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