JP3086853B2 - Electrolytic cell - Google Patents
Electrolytic cellInfo
- Publication number
- JP3086853B2 JP3086853B2 JP11048428A JP4842899A JP3086853B2 JP 3086853 B2 JP3086853 B2 JP 3086853B2 JP 11048428 A JP11048428 A JP 11048428A JP 4842899 A JP4842899 A JP 4842899A JP 3086853 B2 JP3086853 B2 JP 3086853B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- gas
- chamber
- electrolytic cell
- diffusion 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.)
- Expired - Fee Related
Links
- 239000007789 gas Substances 0.000 claims description 75
- 239000001301 oxygen Substances 0.000 claims description 33
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 32
- 238000009792 diffusion process Methods 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 description 19
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 14
- 239000003792 electrolyte Substances 0.000 description 14
- 239000008151 electrolyte solution Substances 0.000 description 14
- 239000003014 ion exchange membrane Substances 0.000 description 11
- 229910052709 silver Inorganic materials 0.000 description 10
- 239000004332 silver Substances 0.000 description 10
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- 229910001882 dioxygen Inorganic materials 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000001630 Pyrus pyrifolia var culta Nutrition 0.000 description 1
- 240000002609 Pyrus pyrifolia var. culta Species 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
Landscapes
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、イオン交換膜法食
塩電解等に使用される酸素陰極を用いた電解槽に関し、
更に詳しくは、既存の水素発生陰極を用いる電解槽から
の改装が容易な酸素陰極を用いる電解槽に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic cell using an oxygen cathode used for ion exchange membrane method salt electrolysis and the like.
More specifically, the present invention relates to an electrolytic cell using an oxygen cathode which can be easily retrofitted from an existing electrolytic cell using a hydrogen generating cathode.
【０００２】[0002]
【従来の技術】既存のイオン交換膜型食塩電解槽に使用
される陰極は、通常、ニッケル材等で構成され、そこで
は水素発生反応が進行する。この電解槽の水素発生陰極
を省電力が期待できる酸素陰極に変更することが望まし
いとされている。ただ、水素発生陰極を酸素陰極に変更
するには、水素発生陰極を改造してガス室を新たに設け
る必要がある。2. Description of the Related Art A cathode used in an existing ion-exchange membrane type salt cell is usually made of a nickel material or the like, in which a hydrogen generation reaction proceeds. It is said that it is desirable to change the hydrogen generating cathode of this electrolytic cell to an oxygen cathode which can be expected to save power. However, in order to change the hydrogen generating cathode to an oxygen cathode, it is necessary to remodel the hydrogen generating cathode and newly provide a gas chamber.
【０００３】[0003]
【発明が解決しようとする課題】従来の電解槽にガス拡
散電極と共に直接ガス室となるガス室パンを取り付け、
酸素ガス導入口と排出口を設けることにより酸素陰極を
設けようとする改造は、高い工作精度が出せず、電解
液、ガス間のシールが困難であった。現状では陰極枠を
始めから製作した方が容易である。しかしこれでは不経
済である。現存の電解槽を生かすためには、できるだけ
現状の電解槽構造に手を加えずに改造できるか、又は手
を加えるにしても最小限で改造できる手段が望まれてい
た。そのため、本発明は、現在の電解槽の構造を実質的
には最小限に近い改造ですみ、電解槽の構造を提供する
ことを課題としている。A gas chamber pan serving as a gas chamber is directly attached to a conventional electrolytic cell together with a gas diffusion electrode.
In the modification to provide an oxygen cathode by providing an oxygen gas inlet and an outlet, high working accuracy could not be obtained, and it was difficult to seal between the electrolyte and the gas. At present, it is easier to manufacture the cathode frame from the beginning. But this is uneconomical. In order to make use of the existing electrolytic cell, there has been a demand for a means which can be modified without modifying the existing electrolytic cell structure as much as possible, or which can be modified with minimal modification. Therefore, an object of the present invention is to provide a structure of an electrolytic cell which requires only a minimal modification of the current structure of the electrolytic cell.
【０００４】[0004]
【課題を解決するための手段】本発明者は、現在の電解
槽の構造を最小限に近い改造で、ガス拡散電極を陰極と
して置き換えることを検討したところ、現在の電解槽に
おける水素発生陰極では、水素が発生する関係で陰極と
イオン交換膜との間隔が広く、また陰極室では電解液を
室内で循環する場合があるなど、陰極板の後に間が開い
ていることがあるとかの事情で、陰極室の厚みの幅が広
いことに着目し、従来の陰極室内にガス拡散電極、ガス
室、ガス室パン、反応ガスの入口と出口とを備えたユニ
ットを入れて、陰極とし、さらにそのユニットの液シー
ルが完全であれば、陰極室内に電解液が入ったままの形
態でもユニットを設置できるのではないか、という点か
ら研究し、本発明に到達した。Means for Solving the Problems The present inventor studied replacing the gas diffusion electrode as a cathode with a near-minimum modification of the current electrolytic cell structure. Due to the fact that the space between the cathode and the ion exchange membrane is wide due to the generation of hydrogen, and the electrolyte may circulate in the cathode chamber, the gap may be open after the cathode plate. Focusing on the wide width of the thickness of the cathode chamber, a unit equipped with a gas diffusion electrode, a gas chamber, a gas chamber pan, and an inlet and an outlet for a reaction gas was placed in a conventional cathode chamber, and the cathode was formed. The present inventors have studied from the viewpoint that if the liquid seal of the unit is perfect, the unit can be installed even in a state in which the electrolytic solution remains in the cathode chamber, and reached the present invention.
【０００５】すなわち、本発明は、以下の手段により上
記の課題を達成した。 （１）水素発生陰極を設置した陰極室を有する電解槽に
ついて、前記水素発生陰極に代えて、ガス拡散電極、ガ
ス室、ガス室パンから構成され、ガスの出入り口がある
酸素陰極を陰極液で満たした陰極室内に設置し、酸素陰
極の反応層側及びガス室背面に陰極液が存在する状態で
運転されることを特徴とする電解槽。That is, the present invention has achieved the above object by the following means. (1) In an electrolytic cell having a cathode chamber with a hydrogen generating cathode installed
For, in place of the hydrogen generating cathode, a gas diffusion electrode, a gas chamber, is constructed from a gas chamber pan, was placed in the cathode chamber filled with oxygen cathode has entrance of the gas in the catholyte, the reaction layer side of the oxygen cathode And an electrolytic cell operated in a state where the catholyte is present at the back of the gas chamber.
【０００６】本発明は、以下の知見を得たことで完成さ
れた。ガス拡散電極と銀板を重ね合わせ、２００℃〜４
００℃，２０ｋｇ／ｃｍ2 以上の条件でホットプレスす
ると、銀板とガス拡散電極は強固に接合され、接合面か
らの液漏れも無いことが分かった。また、銀同士であれ
ば、ホットプレスで強固に接合できるというこの原理を
用いれば、電極パンには、銀板を介してガス拡散電極を
溶着することができる。これらの手段を用いれば、ガス
室付きガス拡散電極を作製することができ、電解槽の陰
極室部をさほど改造せずに酸素陰極を設置することがで
きる。The present invention has been accomplished based on the following findings. The gas diffusion electrode and the silver plate are overlapped, and 200 ° C ~ 4
When hot pressing was performed under the conditions of 00 ° C. and 20 kg / cm 2 or more, it was found that the silver plate and the gas diffusion electrode were firmly joined and there was no liquid leakage from the joining surface. Also, if this principle is used that silver can be firmly joined by hot pressing, a gas diffusion electrode can be welded to the electrode pan via a silver plate. By using these means, a gas diffusion electrode with a gas chamber can be manufactured, and an oxygen cathode can be installed without remodeling the cathode chamber of the electrolytic cell so much.
【０００７】そして、液漏れの心配は無くなったので、
本発明によりガス室付きガス拡散電極（酸素陰極）を陰
極液に浸した状態で電解槽が構成することができる。本
発明の電解槽では、電解液の流れは、上部から又は下部
から、イオン交換膜とガス室付きガス拡散電極の間を通
するようにさせ、場合によってはガス室付きガス拡散電
極の背面に移動させればよい。電解液の導入、排出に
は、従来の電解槽の水素ガス集合室等を利用することも
できる。ガス室付きガス拡散電極は電解液に浸っている
ので、電極にかかる圧力は電極の反応層側、ガス室背面
側ともほぼ同一圧力である。このため、ガス拡散電極に
無理がかからないので、ガス室を保護するニッケル板
（ガス室パン）は、厚さが０．５ｍｍと薄くても使用可
能である。結局、全体厚が３ｍｍ以下のガス室付きガス
拡散電極が作製可能で、既存の電解槽をあまり改造せず
に酸素陰極を設置できる。[0007] Then, since the fear of liquid leakage is gone,
According to the present invention, an electrolytic cell can be configured in a state where a gas diffusion electrode (oxygen cathode) with a gas chamber is immersed in a catholyte. In the electrolytic cell of the present invention, the flow of the electrolytic solution is caused to pass between the ion exchange membrane and the gas diffusion electrode with a gas chamber from above or from below, and in some cases, on the back of the gas diffusion electrode with a gas chamber. Just move it. For introduction and discharge of the electrolyte, a hydrogen gas collecting chamber or the like of a conventional electrolytic cell can be used. Since the gas diffusion electrode with a gas chamber is immersed in the electrolytic solution, the pressure applied to the electrode is substantially the same both on the reaction layer side of the electrode and on the back side of the gas chamber. For this reason, since the gas diffusion electrode is not forced, the nickel plate (gas chamber pan) for protecting the gas chamber can be used even if the thickness is as thin as 0.5 mm. As a result, a gas diffusion electrode with a gas chamber having a total thickness of 3 mm or less can be manufactured, and an oxygen cathode can be installed without modifying an existing electrolytic cell much.
【０００８】[0008]
【発明の実施の形態】以下、本発明についてその実施の
形態を説明するが、本発明はこれらに限定されない。図
１は、本発明の第１の実施態様を示す断面図である。こ
の例では、電解液が上部から供給されて下部に流れる形
式である。この電解槽においては、陰極室Ａと陽極室Ｂ
とに仕切るバイポーラプレート１１を枠体構造に設け、
このバイポーラプレート１１に接続して給電リブ１２を
設けてある。陽極室Ｂ側には陽極ＤＳＡ１３を設け、陰
極室Ａ側には給電リブ１２で酸素陰極１０を垂直に固定
している。酸素陰極１０は、ガス拡散電極を内側に囲む
ガス室パンの外側を陰極側の給電リブ１２に溶接して固
定してある。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto. FIG. 1 is a sectional view showing a first embodiment of the present invention. In this example, the electrolytic solution is supplied from above and flows downward. In this electrolytic cell, a cathode chamber A and an anode chamber B
The bipolar plate 11 is provided in the frame structure,
A power supply rib 12 is provided so as to be connected to the bipolar plate 11. An anode DSA 13 is provided on the anode chamber B side, and the oxygen cathode 10 is vertically fixed by a power supply rib 12 on the cathode chamber A side. The oxygen cathode 10 is fixed by welding the outside of the gas chamber pan surrounding the gas diffusion electrode to the power supply rib 12 on the cathode side.
【０００９】酸素陰極１０は、図４に示すように、ガス
拡散電極１、ガス室６、ガス室パン７から構成され、ガ
ス出入口８が設けてある。ガス拡散電極１は、ガス供給
層３と図示外の給電体と、反応層２とがこの順で積層す
る三層構造で形成してあり、ガス供給層３と反応層２と
は大きさが同じで両者は四辺をそろえてある。給電体と
しては銀網を選び、ガス供給層３や反応層２より少し大
きく、ガス供給層３等の周囲に５ｍｍ幅ではみ出させ、
はみ出た部分は反応層側３に折り返して露出させてあ
る。折り返して露出した部分には更に銀枠５を重ねて隠
し、反応層３と給電体と銀枠５とはホットプレスで気液
シールしてある。こうして形成してあるガス拡散電極１
に対して、そのガス供給層３側を銀製のガス室パン７が
周囲を取り囲み、ガス供給層３との間でガス室６を形成
している。ガス室パン７の縁部４は上記の銀枠５の周縁
部にホットプレスで気密に接合している。The oxygen cathode 10 comprises a gas diffusion electrode 1, a gas chamber 6, and a gas chamber pan 7, as shown in FIG. The gas diffusion electrode 1 is formed in a three-layer structure in which a gas supply layer 3, a power supply (not shown), and a reaction layer 2 are stacked in this order, and the size of the gas supply layer 3 and the reaction layer 2 is small. Same, both sides are aligned. A silver mesh is selected as a power supply, and is slightly larger than the gas supply layer 3 and the reaction layer 2 and protrudes around the gas supply layer 3 at a width of 5 mm.
The protruding portion is folded back to the reaction layer side 3 to be exposed. The silver frame 5 is further overlapped and concealed on the exposed portion by turning back, and the reaction layer 3, the power supply and the silver frame 5 are gas-liquid sealed by hot pressing. Gas diffusion electrode 1 thus formed
On the other hand, a silver gas chamber pan 7 surrounds the gas supply layer 3 side, and forms a gas chamber 6 with the gas supply layer 3. The edge 4 of the gas chamber pan 7 is air-tightly joined to the peripheral edge of the silver frame 5 by hot pressing.
【００１０】図１のように、ガス供給層と積層する反応
層側には、電解液の流路１４に必要なだけの幅を離して
酸素陰極１０に平行にイオン交換膜１５を設置してあ
る。陰極室Ａの給電リブ１２に固定された酸素陰極１０
は、上下にそれぞれ液路室１６，１７を取り付け、上部
と下部の各液路室１６，１７には第１〜第３の電解液流
出入口が設けてある。第１の流出入口１８、第２の流出
入口１９、第３の流出入口は、電解液の流出入口であ
る。なお、酸素陰極１０の裏側にも電解液流出入口２１
を設けてある。As shown in FIG. 1, an ion exchange membrane 15 is provided in parallel with the oxygen cathode 10 on the side of the reaction layer which is laminated with the gas supply layer, with a necessary width for the electrolyte solution flow path 14. is there. Oxygen cathode 10 fixed to power supply rib 12 of cathode chamber A
Have upper and lower liquid passage chambers 16 and 17, respectively, and upper and lower liquid passage chambers 16 and 17 are provided with first to third electrolyte outflow inlets. The first outlet 18, the second outlet 19, and the third outlet are electrolyte outlets. The electrolyte outlet 21 is also provided on the back side of the oxygen cathode 10.
Is provided.
【００１１】電解液は、第１の流出入口１８から上部側
の液路室１６に入り、液路室１６より第２の流出入口１
９から流路１４内を下方に流れ、酸素陰極１０の下方か
ら酸素陰極１０の裏側に流れ、電解液流出入口２１より
外部に流出する。このようなイオン交換膜法食塩電解槽
構造は、次のようにして製作した。給電体を銀網とし、
銀網が周囲に５ｍｍ幅で反応層側に露出しているガス拡
散電極１を作成した。次いでこのガス拡散電極１を図４
に示すようにガス室パン７に銀枠５を介して付け、ホッ
トプレスする事でガス室付きガス拡散電極１を得た。銀
板をガス拡散電極に接合し、レーザー溶接することでも
作製できる。電解槽の陰極室枠の側面には酸素ガス入口
２２と酸素ガス出口２３の穴を上下２箇所に開け、そこ
から酸素陰極１０に配管する。そして、陰極に出ている
給電リブ１２に酸素陰極１０を溶接する。The electrolytic solution enters the liquid passage chamber 16 on the upper side from the first outlet port 18, and enters the second outlet port 1 from the liquid passage chamber 16.
9 flows downward in the flow path 14, flows from below the oxygen cathode 10 to the back side of the oxygen cathode 10, and flows out of the electrolyte outflow inlet 21 to the outside. Such an ion exchange membrane method salt electrolyzer structure was manufactured as follows. The feeder is a silver mesh,
A gas diffusion electrode 1 having a silver mesh exposed to the reaction layer side with a width of 5 mm around the periphery was prepared. Next, this gas diffusion electrode 1 is
As shown in (1), the gas diffusion electrode 1 with a gas chamber was obtained by attaching to a gas chamber pan 7 via a silver frame 5 and hot pressing. It can also be produced by joining a silver plate to a gas diffusion electrode and laser welding. Holes for an oxygen gas inlet 22 and an oxygen gas outlet 23 are formed in two sides on the side surface of the cathode chamber frame of the electrolytic cell. Then, the oxygen cathode 10 is welded to the power supply rib 12 protruding from the cathode.
【００１２】図１に示すように電解液を上部から流下さ
せる場合は、電解槽上部から陰極液をイオン交換膜とガ
ス拡散電極の間を下降させ、電極下部の隙間から背面に
流れるようにする。陰極液は酸素陰極背面部に設けた排
出口（流出入口２１）から排出する。図２に示す様に電
解液を下部から供給する場合はイオン交換膜１５と酸素
陰極１０のガス拡散電極の間を上昇させ、電極上部の隙
間から電極背面に流れるようにし、酸素陰極背面部の穴
２１から電解液を排出することもできる。電解液は、流
入口１８から下部側液路室１７に入り、下部側液路室１
７より酸素陰極１０とイオン交換膜１５との間の流路１
４を上昇し、酸素陰極１０の上部に近い個所に設けた流
出入口２０から上部側液路室１６に入り、第１の流出入
口１８から排出される。As shown in FIG. 1, when the electrolytic solution is caused to flow down from the upper part, the catholyte is lowered from the upper part of the electrolytic cell between the ion exchange membrane and the gas diffusion electrode so as to flow from the gap under the electrode to the back side. . The catholyte is discharged from a discharge port (outflow port 21) provided on the back surface of the oxygen cathode. As shown in FIG. 2, when the electrolytic solution is supplied from below, the space between the ion exchange membrane 15 and the gas diffusion electrode of the oxygen cathode 10 is raised to flow from the gap above the electrode to the back of the electrode. The electrolyte can be discharged from the hole 21. The electrolytic solution enters the lower liquid passage chamber 17 from the inlet 18 and enters the lower liquid passage chamber 1.
7 shows the flow path 1 between the oxygen cathode 10 and the ion exchange membrane 15
4 rises, enters the upper liquid passage chamber 16 from an outlet 20 provided at a location near the upper part of the oxygen cathode 10, and is discharged from a first outlet 18.
【００１３】図３は、本発明の第３の実施態様を示す断
面図であり、この場合主として背面に設けた電解液流出
入口２１から電解液を流入させる場合である。電解液
は、電解液流出入口２１と、下部側の液路室１７の流入
口１８とから陰極室Ａに流入し、酸素陰極１０とイオン
交換膜１５との間の流路１４を上昇して、上部の第２の
流出入口１９から上部液路室１６に流入して第１の流出
入口１８から排出される。電解液出口位置は液圧の強弱
で選択する。FIG. 3 is a sectional view showing a third embodiment of the present invention. In this case, an electrolyte is mainly introduced from an electrolyte outlet 21 provided on the back surface. The electrolytic solution flows into the cathode chamber A from the electrolytic solution outflow port 21 and the inflow port 18 of the lower liquid path chamber 17, and rises in the flow path 14 between the oxygen cathode 10 and the ion exchange membrane 15. The liquid flows into the upper liquid passage chamber 16 from the upper second outlet 19 and is discharged from the first outlet 18. The electrolyte outlet position is selected depending on the strength of the liquid pressure.
【００１４】[0014]
【発明の効果】本発明では、ガス室付きガス拡散電極か
ら成る酸素陰極の表裏を電解液で満たした状態で運転す
るので、酸素陰極の裏側にも酸素陰極の表側と同程度の
液圧が掛かるため、酸素陰極に無理な圧力差が加わらな
い。その結果、長期間の電解が安定に行われる。また、
液中に浸された状態で運転されるので反応ガスが安定に
供給されれば電極の強度は余り高くする必要がない。安
価で、既存の電解槽の改造には最適な酸素陰極を提供で
きる。このため、現在のイオン交換膜法食塩電解槽に実
質的には最小限に近い手を加えるだけで、ガス拡散電極
を使用するイオン交換膜法食塩電解槽に改造することが
可能である。According to the present invention, since the operation is performed in a state where the front and back of the oxygen cathode composed of the gas diffusion electrode with the gas chamber are filled with the electrolytic solution, the liquid pressure on the back side of the oxygen cathode is almost the same as the front side of the oxygen cathode. Since it is applied, no excessive pressure difference is applied to the oxygen cathode. As a result, long-term electrolysis is performed stably. Also,
Since the operation is performed in a state of being immersed in the liquid, it is not necessary to increase the strength of the electrode so much if the reaction gas is supplied stably. An inexpensive oxygen cathode that is optimal for retrofitting existing electrolytic cells can be provided. For this reason, it is possible to convert the current ion-exchange membrane-type salt cell to a ion-exchange membrane-type salt cell that uses a gas diffusion electrode, by substantially modifying the salt-electrolyte cell.
【図１】電解液を上部から流す方式の本発明のガス拡散
電極を使用する電解槽の例を示す断面図を示す。FIG. 1 is a cross-sectional view showing an example of an electrolytic cell using a gas diffusion electrode of the present invention in which an electrolytic solution flows from above.
【図２】電解液を下部から流す方式の本発明のガス拡散
電極を使用する電解槽の例を示す断面図を示す。FIG. 2 is a cross-sectional view showing an example of an electrolytic cell using a gas diffusion electrode of the present invention in which an electrolytic solution flows from below.
【図３】ガス拡散電極の背面に電解液入口を設けた本発
明のガス拡散電極を使用する電解槽の例を示す断面図を
示す。FIG. 3 is a sectional view showing an example of an electrolytic cell using the gas diffusion electrode of the present invention in which an electrolyte inlet is provided on the back surface of the gas diffusion electrode.
【図４】酸素陰極の部分的な構造を表した断面図を示
す。FIG. 4 is a sectional view showing a partial structure of an oxygen cathode.
１ ガス拡散電極 ２ 反応層 ３ ガス供給層 ４ 縁部 ５ 銀枠 ６ ガス室 ７ ガス室パン ８ ガス出入口 １０ 酸素陰極 １１ バイポーラプレート １２ 給電リブ １３ 陽極ＤＳＡ １４ 流路 １５ イオン交換膜 １６ 液路室 １７ 液路室 １８ 第１の流出入口 １９ 第２の流出入口 ２０ 第３の流出入口 ２１ 電解液流出入口 ２２ 酸素ガス入口 ２３ 酸素ガス出口 Ａ 陰極室 Ｂ 陽極室 DESCRIPTION OF SYMBOLS 1 Gas diffusion electrode 2 Reaction layer 3 Gas supply layer 4 Edge 5 Silver frame 6 Gas chamber 7 Gas chamber pan 8 Gas inlet / outlet 10 Oxygen cathode 11 Bipolar plate 12 Power supply rib 13 Anode DSA 14 Flow path 15 Ion exchange membrane 16 Liquid path chamber Reference Signs List 17 Liquid passage chamber 18 First outflow port 19 Second outflow port 20 Third outflow port 21 Electrolyte outflow port 22 Oxygen gas inlet 23 Oxygen gas outlet A Cathode chamber B Anode chamber
───────────────────────────────────────────────────── フロントページの続き (72)発明者 古屋 長一 山梨県甲府市中村町２−14 (56)参考文献 特開 平10−110287（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C25B 1/00 - 15/08 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Choichi Furiya 2-14 Nakamura-cho, Kofu City, Yamanashi Prefecture (56) References JP-A-10-110287 (JP, A) (58) Fields investigated (Int. . 7, DB name) C25B 1/00 - 15/08
Claims (1)
電解槽について、前記水素発生陰極に代えて、ガス拡散
電極、ガス室、ガス室パンから構成され、ガスの出入り
口がある酸素陰極を陰極液で満たした陰極室内に設置
し、酸素陰極の反応層側及びガス室背面に陰極液が存在
する状態で運転されることを特徴とする電解槽。1. A cathode chamber in which a hydrogen generating cathode is installed.
For the electrolytic cell, instead of the hydrogen generating cathode, a gas diffusion electrode, a gas chamber, is constructed from a gas chamber pan, oxygen cathode has doorways gas was placed in the cathode chamber filled with catholyte, the reaction of the oxygen cathode An electrolytic cell which is operated in a state where a catholyte exists on the layer side and the back of the gas chamber.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11048428A JP3086853B2 (en) | 1999-02-25 | 1999-02-25 | Electrolytic cell |
| EP00905324A EP1076115A1 (en) | 1999-02-25 | 2000-02-24 | Gas diffusion electrode and brine electrolytic bath |
| US09/674,004 US6423194B1 (en) | 1999-02-25 | 2000-02-24 | Gas diffusion electrode and brine electrolytic bath |
| CNB008002096A CN1148467C (en) | 1999-02-25 | 2000-02-24 | Gas diffusion electrode and salt electrolytic bath using the same |
| PCT/JP2000/001074 WO2000050668A1 (en) | 1999-02-25 | 2000-02-24 | Gas diffusion electrode and brine electrolytic bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11048428A JP3086853B2 (en) | 1999-02-25 | 1999-02-25 | Electrolytic cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000239875A JP2000239875A (en) | 2000-09-05 |
| JP3086853B2 true JP3086853B2 (en) | 2000-09-11 |
Family
ID=12803083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11048428A Expired - Fee Related JP3086853B2 (en) | 1999-02-25 | 1999-02-25 | Electrolytic cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3086853B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05189473A (en) * | 1992-01-08 | 1993-07-30 | Matsushita Electric Ind Co Ltd | Machine translation device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10333853A1 (en) * | 2003-07-24 | 2005-02-24 | Bayer Materialscience Ag | Electrochemical cell |
| DE102010054159A1 (en) * | 2010-12-10 | 2012-06-14 | Bayer Materialscience Aktiengesellschaft | Process for the incorporation of oxygen-consuming electrodes in electrochemical cells and electrochemical cells |
| JP5781490B2 (en) * | 2012-11-26 | 2015-09-24 | 本田技研工業株式会社 | High pressure water electrolyzer |
-
1999
- 1999-02-25 JP JP11048428A patent/JP3086853B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05189473A (en) * | 1992-01-08 | 1993-07-30 | Matsushita Electric Ind Co Ltd | Machine translation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000239875A (en) | 2000-09-05 |
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