JPH01120764A - Manufacture of cadmium electrode - Google Patents
Manufacture of cadmium electrodeInfo
- Publication number
- JPH01120764A JPH01120764A JP62276970A JP27697087A JPH01120764A JP H01120764 A JPH01120764 A JP H01120764A JP 62276970 A JP62276970 A JP 62276970A JP 27697087 A JP27697087 A JP 27697087A JP H01120764 A JPH01120764 A JP H01120764A
- Authority
- JP
- Japan
- Prior art keywords
- porous body
- active material
- potential
- cadmium
- salt
- 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
- 229910052793 cadmium Inorganic materials 0.000 title claims description 7
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011149 active material Substances 0.000 claims abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 6
- XIEPJMXMMWZAAV-UHFFFAOYSA-N cadmium nitrate Inorganic materials [Cd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XIEPJMXMMWZAAV-UHFFFAOYSA-N 0.000 claims description 4
- NMHMNPHRMNGLLB-UHFFFAOYSA-N phloretic acid Chemical group OC(=O)CCC1=CC=C(O)C=C1 NMHMNPHRMNGLLB-UHFFFAOYSA-N 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 239000012266 salt solution Substances 0.000 abstract description 8
- 238000010828 elution Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/26—Processes of manufacture
- H01M4/28—Precipitating active material on the carrier
-
- 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はアルカリ蓄電池用カドミウム電極の製造法に関
し、特に多孔質体への活物質の充填に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a cadmium electrode for an alkaline storage battery, and more particularly to filling a porous body with an active material.
従来の技術
従来この種のアルカリ蓄電池用電極の製造法としては、
カーボニルニッケ粉末あるいはそのズラリを水素、窒素
雰囲気中において７００〜１０００℃の温度で焼結させ
ることによって得たニッケル多孔質体等を、活物質原料
塩に浸漬した後、衝性アルカリ中で活物質化する工程を
繰り返すことによって、活物質を充填していた。Conventional technology The conventional method for manufacturing electrodes for alkaline storage batteries is as follows:
A nickel porous body etc. obtained by sintering carbonyl nickel powder or a slurry thereof at a temperature of 700 to 1000°C in a hydrogen or nitrogen atmosphere is immersed in an active material raw material salt, and then the active material is immersed in an acidic alkali. The active material was filled by repeating the process of oxidation.
上記工程においては、多孔質体を活物質原料塩溶液に浸
漬した際、一般に酸性である前記溶液によって多孔質体
が溶解され、溶液中や活物質中に混入し、多孔質体への
充填性の低下や、電極特性の低下を引き起すようになる
。In the above process, when the porous body is immersed in the active material raw material salt solution, the porous body is dissolved by the solution, which is generally acidic, and mixed into the solution and the active material, which improves the filling properties of the porous body. This causes a decrease in the electrode properties and a decrease in the electrode properties.
これら欠点を除くためには、前記溶液と多孔質体の接触
時間を短くすることが重要であるが、活物質原料塩を多
孔質体の細孔内に充分浸透させる必要があるため困難で
ある。そこで他の方法としては特公昭５９−４２９４８
号公報にあるように、活物質原料塩溶液に浸漬する際に
外部から電位をかけることによって多孔質体の溶解を防
ぐ方法が提案されている。In order to eliminate these drawbacks, it is important to shorten the contact time between the solution and the porous body, but this is difficult because it is necessary to sufficiently penetrate the active material raw material salt into the pores of the porous body. . Therefore, as another method,
As described in the above publication, a method of preventing dissolution of a porous body by applying an electric potential from the outside when immersing the porous body in an active material raw material salt solution has been proposed.
発明が解決しようとする問題点
ところが上記従来法では、電位をかける際の対極の表面
状態によシ、外部電源の電圧を変化させるか、照合電極
を第３電極として使用する必要がある。しかし前者は使
用中に徐々に電極の表面が変化するため、一定状態に保
つことが困難である。また後者は一般に前記溶液が低ｐ
Ｈ高温で用いられるために、照合電極の保守上に問題が
あり、量産化が困難であった。Problems to be Solved by the Invention However, in the conventional method described above, depending on the surface condition of the counter electrode when applying a potential, it is necessary to change the voltage of the external power supply or to use the reference electrode as the third electrode. However, in the former case, the surface of the electrode gradually changes during use, making it difficult to maintain a constant state. In addition, the latter generally requires that the solution has a low p
Because it is used at high temperatures, there are problems with maintenance of the reference electrode, making mass production difficult.
問題点を解決するための手段
本発明は上記問題点を除去するもので、活物質原料塩溶
液中に多孔質体を浸漬する際に、多孔質体を形成する金
属よりも、卑な電位を有する金属を電気的に接続するこ
とを特徴とするものである。Means for Solving the Problems The present invention eliminates the above-mentioned problems by applying a potential less noble than the metal forming the porous body when the porous body is immersed in the active material raw material salt solution. It is characterized by electrically connecting metals that have
作用
本発明は上記の特徴を有することによシ、活物質原料塩
溶液に浸漬した際、電気的に接続した金属の電位が卑で
あるため、多孔質体が溶解する電位以下に多孔質体を保
つことができる。Operation The present invention has the above-mentioned characteristics, and when immersed in an active material raw material salt solution, the potential of the electrically connected metal is base, so that the porous body is lowered to a potential lower than the potential at which the porous body dissolves. can be kept.
実施例 本発明の詳細な説明する。Example The present invention will be described in detail.
長さ２５０ｍｍ、巾３３ｍｍ、厚さ０．５５＋ｎｍのニ
ッケル焼結式多孔質体に、長さ５０Ｍ１巾ｂ
ツシュのカドミウムネット（純度９９．９９％）を溶接
した後、比重２．０、温度６０’Ｃの硝酸カドミウム溶
液に６０分間浸漬し、２０４ ＮａＯＨ水溶液中で活物
質化し、さらに水洗するという工程を６回繰り返した。After welding a cadmium net (purity 99.99%) with a length of 50M1 width b to a nickel sintered porous body with a length of 250mm, a width of 33mm, and a thickness of 0.55+nm, the specific gravity was 2.0 and the temperature was 60. The process of immersing it in a cadmium nitrate solution of 'C for 60 minutes, making it an active material in a 204 NaOH aqueous solution, and washing it with water was repeated six times.
上記の方法で使用した硝酸カドミウム中へのニッケルの
溶解量を図面に示した。図面から明らかなように本発明
法によ５Ｎｉの溶出をほぼ完全に抑制できることがわか
る。The amount of nickel dissolved in cadmium nitrate used in the above method is shown in the drawing. As is clear from the drawings, it can be seen that the method of the present invention can almost completely suppress the elution of 5Ni.
発明の効果
上述したよう−に本発明によれば、卑な電位の金属と多
孔質体を電気的に接続することにより、多孔質体が溶解
する電位よりも卑な電位に保つことができるため、活物
質原料塩溶液あるいは活物質への多孔質体形成元素の混
入を防止できるため、多孔質体への活物質の高充填量の
確保、電極特性の低下を防止できるという効果がある。Effects of the Invention As described above, according to the present invention, by electrically connecting a metal with a base potential to a porous body, it is possible to maintain a potential lower than the potential at which the porous body dissolves. Since it is possible to prevent the porous body-forming element from being mixed into the active material raw salt solution or the active material, it is possible to ensure a high filling amount of the active material in the porous body and to prevent deterioration of electrode characteristics.
図面は、本発明の一実施例と従来法（活物質原料塩溶液
に浸漬する際に外部から電位をかけない方法）による活
物質原料塩溶液へのニッケルの溶出量を示す特性図であ
る。The drawing is a characteristic diagram showing the amount of nickel eluted into the active material raw salt solution according to an embodiment of the present invention and a conventional method (a method in which no external potential is applied when immersing the active material in the active material raw salt solution).
Claims (3)
質原料塩に多孔質体を浸漬する際、多孔質体の構成元素
に比べ原料塩に酸化されやすい金属を電気的に接続する
事を特徴とするカドミウム電極の製造法。(1) In the process of filling a porous body with an active material, when the porous body is immersed in the raw material salt of the active material, metals that are more easily oxidized by the raw salt than the constituent elements of the porous body are electrically connected. A method for producing a cadmium electrode characterized by:
カドミウム、接続する金属がカドミウムである特許請求
の範囲第１項記載のカドミウム電極の製造法。(2) The method for producing a cadmium electrode according to claim 1, wherein the porous body is a nickel sintered body, the active material raw material salt is cadmium nitrate, and the connecting metal is cadmium.
カドミウム、接続する金属がマグネシウム合金である特
許請求の範囲第１項記載のカドミウム電極の製造法。(3) The method for manufacturing a cadmium electrode according to claim 1, wherein the porous body is a nickel sintered body, the active material raw material salt is cadmium nitrate, and the connecting metal is a magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62276970A JPH01120764A (en) | 1987-10-30 | 1987-10-30 | Manufacture of cadmium electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62276970A JPH01120764A (en) | 1987-10-30 | 1987-10-30 | Manufacture of cadmium electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01120764A true JPH01120764A (en) | 1989-05-12 |
Family
ID=17576950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62276970A Pending JPH01120764A (en) | 1987-10-30 | 1987-10-30 | Manufacture of cadmium electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01120764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10962074B2 (en) | 2016-10-12 | 2021-03-30 | Yamashita Rubber Co., Ltd. | Vibration-damping device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864755A (en) * | 1981-10-09 | 1983-04-18 | Yuasa Battery Co Ltd | Manufacture of sintered plate for alkaline battery |
-
1987
- 1987-10-30 JP JP62276970A patent/JPH01120764A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864755A (en) * | 1981-10-09 | 1983-04-18 | Yuasa Battery Co Ltd | Manufacture of sintered plate for alkaline battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10962074B2 (en) | 2016-10-12 | 2021-03-30 | Yamashita Rubber Co., Ltd. | Vibration-damping device |
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