JPH06306666A - Water electrolysis cell - Google Patents
Water electrolysis cellInfo
- Publication number
- JPH06306666A JPH06306666A JP5123397A JP12339793A JPH06306666A JP H06306666 A JPH06306666 A JP H06306666A JP 5123397 A JP5123397 A JP 5123397A JP 12339793 A JP12339793 A JP 12339793A JP H06306666 A JPH06306666 A JP H06306666A
- Authority
- JP
- Japan
- Prior art keywords
- exchange membrane
- packing
- ion exchange
- cell
- water electrolysis
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はイオン交換膜を有する水
電解槽に関する。FIELD OF THE INVENTION The present invention relates to a water electrolysis cell having an ion exchange membrane.
【０００２】[0002]
【従来の技術】イオン交換膜を有する水電解槽は、イオ
ン交換膜の両面に陰極と陽極とを接合させたイオン交換
膜−電極接合体に水を供給し、陽極より酸素を、陰極よ
り水素を得るためのものである。2. Description of the Related Art A water electrolysis cell having an ion exchange membrane supplies water to an ion exchange membrane-electrode assembly in which a cathode and an anode are bonded to both sides of the ion exchange membrane, and oxygen is supplied from the anode and hydrogen is supplied from the cathode. Is to get.
【０００３】[0003]
【従来の技術】従来の一般的なイオン交換膜を有する水
電解槽は、イオン交換膜の両面に周縁部を残して触媒電
極を接合し、このイオン交換膜−触媒電極接合体の両側
の触媒電極にそれとほぼ同一の形状、寸法のチタン網等
からなる集電体を接触させ、イオン交換膜の触媒電極が
接合されていない周縁部に、当該部に相当する形状、寸
法のパッキンを配し、これらを両側から集電板で挾んで
一体に保持させた構造のもの（以下、セルと称する）
や、そのセルを複数積層し、ボルト−ナットで締め付け
ることにより複極式に組み立てた構造のものであった。2. Description of the Related Art In a conventional water electrolysis cell having a general ion exchange membrane, catalyst electrodes are joined to each other while leaving a peripheral portion on both sides of the ion exchange membrane. The electrode is brought into contact with a current collector made of titanium mesh or the like having almost the same shape and size, and a packing having a shape and size corresponding to the part is arranged at the peripheral portion of the ion exchange membrane where the catalyst electrode is not joined. , Having a structure in which they are sandwiched from both sides by current collectors and held integrally (hereinafter referred to as cells)
Alternatively, the cell has a structure in which a plurality of the cells are laminated and fastened with bolts and nuts to be assembled in a bipolar manner.
【０００４】このような、従来の水電解槽では、各セル
の厚みは特に規定されず、各セルに加わる締め付け力に
応じてパッキンが変形することにより、各々のセルの厚
みが決まっていた。In such a conventional water electrolysis cell, the thickness of each cell is not particularly specified, and the thickness of each cell is determined by the deformation of the packing according to the tightening force applied to each cell.
【０００５】[0005]
【発明が解決しようとする課題】複極式の水電解槽にお
いて、セル厚さは、触媒電極−集電体間の接触抵抗によ
り生ずるセルの内部抵抗等、セルの特性に大きな影響を
およぼす。つまりは、積層厚みによってセルの寿命が決
まると言っても過言ではない。In the bipolar electrode type water electrolysis cell, the cell thickness has a great influence on the cell characteristics such as the internal resistance of the cell caused by the contact resistance between the catalyst electrode and the current collector. In other words, it is no exaggeration to say that the cell life is determined by the stack thickness.
【０００６】しかし、従来のものには積層厚みを規定す
る手段がなく、ボルト、ナット等による締め付け力のみ
により間接的にパッキン変形量を規定し、各々のセルの
積層厚を決めている。However, the conventional one has no means for defining the stacking thickness, and the packing deformation amount is indirectly defined only by the tightening force of bolts, nuts, etc. to determine the stacking thickness of each cell.
【０００７】このような従来の複極式の水電解槽をボル
ト、ナット等により固定する場合、外側に位置するセル
には大きいな締め付け力が加わりパッキンの変形量が多
いが、中央部に位置するセルは、パッキンの逃げやボル
トへの噛み込み等により締め付けが小さく、パッキンの
変形量が少ない、という現象が生ずる。When fixing such a conventional bipolar electrode type water electrolysis cell with bolts, nuts, etc., a large tightening force is applied to the cells located on the outer side and the packing is deformed a lot, but it is located in the central portion. In such cells, there is a phenomenon that the packing is loosened, the bolt is caught in the bolt, and the tightening is small, and the amount of deformation of the packing is small.
【０００８】このような押圧力のアンバランスの結果、
中央側ほどセルの厚みが大きい、すなわち触媒電極と集
電体との圧接力が小さいため、触媒電極と集電体との接
触不良により内部抵抗が大きくなり、局部的な電解が起
こるようになる。触媒電極が局部的にしか働かないと、
電流密度が増大し発熱量も増大するので、イオン交換膜
−触媒電極接合体の劣化が速くなり、中央部のセルの寿
命が短くなる。As a result of such imbalance of the pressing force,
The cell thickness is larger toward the center side, that is, the pressure contact force between the catalyst electrode and the current collector is small, so the internal resistance increases due to poor contact between the catalyst electrode and current collector, and local electrolysis occurs. . If the catalytic electrode only works locally,
Since the current density increases and the amount of heat generation also increases, deterioration of the ion exchange membrane-catalyst electrode assembly is accelerated, and the life of the central cell is shortened.
【０００９】本発明はこのような課題を解決するために
なされたものであり、その目的とするところは、セル厚
みが均一で、寿命性能のよい水電解槽を提供することで
ある。The present invention has been made to solve the above problems, and an object of the present invention is to provide a water electrolysis cell having a uniform cell thickness and good life performance.
【００１０】[0010]
【課題を解決しようとするための手段】そこで、イオン
交換膜とイオン交換膜の両面にイオン交換膜の周縁部を
残して接合された触媒電極とよりなるイオン交換膜−電
極接合体と、イオン交換膜−電極接合体の両面に配設さ
れた集電体と、イオン交換膜の両面の触媒電極が接合さ
れていない周縁部に配設されたパッキンと、イオン交換
膜−電極接合体と集電体とパッキンとを両側から挾んで
支持する集電板と、パッキン部に配されたパッキン変形
量規定部材とを備えてなる水電解槽、及び、前記水電解
槽が複数積層されてなる複極式の水電解槽、とすること
により上記課題を解決せんとするものである。Therefore, an ion-exchange membrane-electrode assembly comprising an ion-exchange membrane and a catalyst electrode joined to both sides of the ion-exchange membrane leaving the peripheral portions of the ion-exchange membrane, and an ion-exchange membrane. Current collectors disposed on both sides of the exchange membrane-electrode assembly, packings disposed on both sides of the ion exchange membrane where the catalyst electrodes are not joined, and an ion exchange membrane-electrode assembly A water electrolysis tank comprising a current collector plate for supporting the electric body and the packing from both sides, and a packing deformation amount regulating member arranged in the packing part, and a composite of a plurality of the water electrolysis tanks laminated. This problem is solved by using a polar water electrolysis cell.
【００１１】[0011]
【作用】イオン交換膜−電極接合体と集電体とパッキン
とを、両側から集電板で押圧挾持したとき、パッキン部
に配されたパッキン変形量規定部材により、パッキンの
逃げや噛み込みを伴うことなく、セル厚みを一定に保つ
ことができる。このようなセルを複数積層した場合に
も、どのセルにも均一な圧力を加えることができるの
で、中間部のセルの締め付け力が弱まるということがな
い。しかも、パッキン自体にばらつきがあったとして
も、どのセルもパッキン変形量規定部材の厚みにそろえ
ることができる。従って、触媒電極と集電体との接触不
良により生ずる局部的な電解を防ぐことができ、寿命の
長い水電解槽を提供することができる。[Function] When the ion exchange membrane-electrode assembly, the current collector and the packing are pressed and held by the current collector plates from both sides, the packing deformation amount regulating member arranged on the packing part prevents the packing from escaping or getting caught. The cell thickness can be kept constant without being accompanied. Even when a plurality of such cells are stacked, a uniform pressure can be applied to all the cells, so that the tightening force of the cells in the middle portion does not weaken. Moreover, even if the packing itself varies, all cells can be made to have the same thickness as the packing deformation amount regulating member. Therefore, it is possible to prevent local electrolysis caused by poor contact between the catalyst electrode and the current collector, and it is possible to provide a water electrolysis cell having a long life.
【００１２】[0012]
【実施例】本発明を実施例を示す図面で説明する。The present invention will be described with reference to the drawings showing the embodiments.
【００１３】図１は、本発明の１実施例に係る水電解槽
のセル構成を示す概略図である。１は円形の陽イオン交
換膜である。２は陽イオン交換膜の両面に配した触媒電
極であり、陽イオン交換膜１に接合されたとき陽イオン
交換膜１の周縁部が残るよう、陽イオン交換膜１よりも
小さな円状に形成されている。陽イオン交換膜１と触媒
電極２とが接合されて、イオン交換膜−電極接合体が形
成される。FIG. 1 is a schematic diagram showing the cell structure of a water electrolysis cell according to an embodiment of the present invention. 1 is a circular cation exchange membrane. Reference numeral 2 is a catalyst electrode arranged on both sides of the cation exchange membrane, and is formed in a circular shape smaller than that of the cation exchange membrane 1 so that the peripheral portion of the cation exchange membrane 1 remains when bonded to the cation exchange membrane 1. Has been done. The cation exchange membrane 1 and the catalyst electrode 2 are joined together to form an ion exchange membrane-electrode assembly.
【００１４】３は触媒電極の外側に配された集電体であ
り、触媒電極２と同等の形状、寸法の、貴金属メッキを
施したチタン網からなっている。Reference numeral 3 denotes a current collector arranged outside the catalyst electrode, which is made of a titanium net having the same shape and dimensions as the catalyst electrode 2 and plated with a noble metal.
【００１５】５はＯ型パッキンであり、外周部はイオン
交換膜１とほぼ同等に、内周部は触媒電極２や集電体３
と同等又は弱冠大きめに、それぞれ形成されている。こ
れにより、パッキン５はイオン交換膜の触媒電極が接合
されていない周縁部に当接することになる。Reference numeral 5 denotes an O-type packing, the outer peripheral portion of which is almost equivalent to the ion exchange membrane 1, and the inner peripheral portion of which is the catalyst electrode 2 and the current collector 3.
It is formed in the same size as or slightly larger than the above. As a result, the packing 5 comes into contact with the peripheral portion of the ion exchange membrane where the catalyst electrode is not joined.
【００１６】６はチタンよりなる集電板であり、集電体
３とパッキン５とを挾み付け、ボルト、ナット等の締め
付け手段（略）で、一体に保持するためのものである。Reference numeral 6 denotes a current collector plate made of titanium, which is used for holding the current collector 3 and the packing 5 together by fastening means (not shown) such as bolts and nuts.
【００１７】４は厚さ０．９ｍｍのポリアセタール製パ
ッキン変形量規定部材であり、パッキン５に穿った開口
部８に嵌挿される。この例では、４つのパッキン変形量
規定部材が用いられているが、これに限られるものでは
なく、パッキン５の内周部や外周部に嵌着しえるような
Ｏ型のものを用いたりすることもできる。Reference numeral 4 denotes a polyacetal packing deformation amount regulating member having a thickness of 0.9 mm, which is fitted into an opening 8 formed in the packing 5. In this example, four packing deformation amount regulating members are used, but the present invention is not limited to this, and an O type member that can be fitted to the inner peripheral portion or the outer peripheral portion of the packing 5 may be used. You can also
【００１８】図２は、上記セルを構成単位する７セルが
積層された複極式の水電解槽である。この例では、ボル
ト、ナット７を用いて、締め付けトルク１００Ｋｇ／ｃ
ｍ2で締め付けられている。FIG. 2 shows a bipolar electrode type water electrolysis cell in which 7 cells, which are constituent units of the above cells, are stacked. In this example, the tightening torque is 100 Kg / c using the bolt and nut 7.
It is tightened at m 2 .
【００１９】図３は、図２のＡ−Ａ断面図である。FIG. 3 is a sectional view taken along the line AA of FIG.
【００２０】図４は、本発明にかかる上記複極式の水電
解槽と、パッキン変形量規定部材を有さない従来の７セ
ル構成複極式の水電解槽との、各々のセルの内部抵抗を
を示す図である。この図より、本発明にかかる水電解槽
では各セルの内部対抗が極めて均一であるのに対して、
従来のものでは中間部のセルほど内部抵抗が高いことが
分かる。FIG. 4 shows the inside of each cell of the bipolar electrode type water electrolysis cell according to the present invention and a conventional 7 cell type bipolar electrode type water electrolysis cell which does not have a packing deformation amount regulating member. It is a figure which shows resistance. From this figure, in the water electrolysis tank according to the present invention, while the internal resistance of each cell is extremely uniform,
It can be seen that the conventional cell has a higher internal resistance in the middle cell.
【００２１】図５は、本発明にかかる上記複極式の水電
解槽と、パッキン変形量規定部材を有さない従来の７セ
ル構成複極式の水電解槽との、各々のセル電圧を示した
ものである。この図より、本発明にかかる水電解槽では
各セルのセル電圧が均一であるのに対して、従来のもの
では中間部のセルほど電圧が高いことがわかる。これは
先の内部抵抗の傾向と一致し、ＩＲ損の差異が電圧差異
となって現れたものである。FIG. 5 shows respective cell voltages of the bipolar electrode type water electrolysis cell according to the present invention and a conventional 7-cell type bipolar electrode type water electrolysis cell having no packing deformation amount regulating member. It is shown. From this figure, it can be seen that in the water electrolyzer according to the present invention, the cell voltage of each cell is uniform, whereas in the conventional one, the voltage is higher in the middle cell. This is in agreement with the above tendency of the internal resistance, and the difference in IR loss appears as a voltage difference.
【００２２】[0022]
【発明の効果】以上述べたように、本発明による水電解
槽は、イオン交換膜とイオン交換膜の両面にイオン交換
膜の周縁部を残して接合された触媒電極とよりなるイオ
ン交換膜−電極接合体と、イオン交換膜−電極接合体の
両面に配設された集電体と、イオン交換膜の両面の触媒
電極が接合されていない周縁部に配設されたパッキン
と、イオン交換膜−電極接合体と集電体とパッキンとを
両側から挾んで支持する集電板と、パッキン部に配され
たパッキン変形量規定部材とを備えてなること、及び前
記水電解槽が複数積層されてなることを、特徴とするも
のである。As described above, the water electrolysis cell according to the present invention is an ion exchange membrane comprising an ion exchange membrane and a catalyst electrode joined to both sides of the ion exchange membrane leaving the peripheral edge portions of the ion exchange membrane. An electrode assembly, a current collector provided on both sides of the ion-exchange membrane-electrode assembly, a packing provided on the peripheral portion where the catalyst electrodes on both sides of the ion-exchange membrane are not joined, and an ion-exchange membrane A current collector plate that sandwiches and supports the electrode assembly, the current collector, and the packing from both sides; and a packing deformation amount regulating member that is arranged in the packing portion, and a plurality of the water electrolysis cells are stacked. It is characterized by that.
【００２３】これにより、イオン交換膜−電極接合体と
集電体とパッキンとを両側から集電板で押圧挾持したと
き、パッキン部に配されたパッキン変形量規定部材によ
り、パッキンの逃げや噛み込みを伴うことなく、セル厚
みを一定に保つことができる。このようなセルを複数積
層した場合にも、どのセルにも均一な圧力を加えること
ができるので、中間部のセルの締め付け力が弱まるとい
うことがない。しかも、パッキン自体にばらつきがあっ
たとしても、どのセルもパッキン変形量規定部材の厚み
にそろえることができる。従って、触媒電極と集電体と
の接触不良により生ずる局部的な電解を防ぐことがで
き、寿命の長い水電解槽を提供することができる。As a result, when the ion exchange membrane-electrode assembly, the current collector and the packing are pressed and held by the current collector plates from both sides, the packing deformation amount regulating member arranged in the packing section allows the packing to escape or bite. It is possible to keep the cell thickness constant without being involved. Even when a plurality of such cells are stacked, a uniform pressure can be applied to all the cells, so that the tightening force of the cells in the middle portion does not weaken. Moreover, even if the packing itself varies, all cells can be made to have the same thickness as the packing deformation amount regulating member. Therefore, it is possible to prevent local electrolysis caused by poor contact between the catalyst electrode and the current collector, and it is possible to provide a water electrolysis cell having a long life.
【図１】本発明の１実施例にかかる水電解槽の構成を示
す図である。FIG. 1 is a diagram showing a configuration of a water electrolysis tank according to an embodiment of the present invention.
【図２】本発明の１実施例にかかる複極式の水電解槽の
断面を示す図である。FIG. 2 is a view showing a cross section of a bipolar electrode type water electrolysis cell according to one embodiment of the present invention.
【図３】本発明の１実施例にかかる複極式の水電解槽の
断面を示す図である。FIG. 3 is a view showing a cross section of a bipolar electrode type water electrolysis cell according to one embodiment of the present invention.
【図４】本発明にかかる水電解槽と従来の水電解槽との
セル抵抗を示す図である。FIG. 4 is a diagram showing cell resistances of a water electrolysis cell according to the present invention and a conventional water electrolysis cell.
【図５】本発明にかかる水電解槽と従来の水電解槽との
セル電圧を示す図である。FIG. 5 is a diagram showing cell voltages of a water electrolysis cell according to the present invention and a conventional water electrolysis cell.
１ イオン交換膜 ２ 触媒電極 ３ 集電体 ４ パッキン変形量規定部材 ５ パッキン ６ 集電板 ７ ボルト−ナット ８ 開口部 1 Ion Exchange Membrane 2 Catalyst Electrode 3 Current Collector 4 Packing Deformation Amount Member 5 Packing 6 Current Collector Plate 7 Bolt-Nut 8 Opening
Claims (2)
面にイオン交換膜の周縁部を残して接合された触媒電極
（２）とよりなるイオン交換膜−電極接合体と、 イオン交換膜−電極接合体の両面に配設された集電体
（３）と、 イオン交換膜の両面の触媒電極が接合されていない周縁
部に配設されたパッキン（５）と、 イオン交換膜−電極接合体と集電体とパッキンとを両側
から挾んで支持する集電板（６）と、 パッキン部に配されたパッキン変形量規定部材（８）
と、を備えてなる水電解槽。1. An ion exchange membrane-electrode assembly comprising an ion exchange membrane (1) and a catalyst electrode (2) joined to both sides of the ion exchange membrane leaving the peripheral edge portions of the ion exchange membrane, and an ion exchange membrane. -A current collector (3) provided on both sides of the electrode assembly, a packing (5) provided on the periphery where the catalyst electrodes on both sides of the ion exchange membrane are not joined, and an ion exchange membrane-electrode A current collector plate (6) for sandwiching and supporting the joined body, the current collector, and the packing, and a packing deformation amount regulating member (8) arranged in the packing portion.
And a water electrolysis cell.
てなる複極式の水電解槽。2. A multi-pole type water electrolysis cell in which a plurality of water electrolysis cells according to claim 1 are stacked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5123397A JP2636670B2 (en) | 1993-04-26 | 1993-04-26 | Water electrolyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5123397A JP2636670B2 (en) | 1993-04-26 | 1993-04-26 | Water electrolyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06306666A true JPH06306666A (en) | 1994-11-01 |
| JP2636670B2 JP2636670B2 (en) | 1997-07-30 |
Family
ID=14859553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5123397A Expired - Fee Related JP2636670B2 (en) | 1993-04-26 | 1993-04-26 | Water electrolyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2636670B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1121685A (en) * | 1997-07-04 | 1999-01-26 | Japan Storage Battery Co Ltd | Filter-press type, solid polymer water electrolytic cell |
| CN102249380A (en) * | 2011-05-20 | 2011-11-23 | 华东师范大学 | Efficient liquid flow type membrane capacitance desalter |
| JP2014504680A (en) * | 2011-02-03 | 2014-02-24 | セラム ハイド | In particular, an electrolytic cell for producing H2 and O2 and an assembly comprising the electrolytic cell |
| CN106967994A (en) * | 2015-11-12 | 2017-07-21 | 德尔塔阀门公司 | For the ozone generation device and ozone generation device system being used together with tap |
| US11458214B2 (en) | 2015-12-21 | 2022-10-04 | Delta Faucet Company | Fluid delivery system including a disinfectant device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106966U (en) * | 1985-12-23 | 1987-07-08 | ||
| JPH03107488A (en) * | 1989-09-22 | 1991-05-07 | Permelec Electrode Ltd | Water electrolyzing device for cosmic life maintaining device |
-
1993
- 1993-04-26 JP JP5123397A patent/JP2636670B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106966U (en) * | 1985-12-23 | 1987-07-08 | ||
| JPH03107488A (en) * | 1989-09-22 | 1991-05-07 | Permelec Electrode Ltd | Water electrolyzing device for cosmic life maintaining device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1121685A (en) * | 1997-07-04 | 1999-01-26 | Japan Storage Battery Co Ltd | Filter-press type, solid polymer water electrolytic cell |
| JP2014504680A (en) * | 2011-02-03 | 2014-02-24 | セラム ハイド | In particular, an electrolytic cell for producing H2 and O2 and an assembly comprising the electrolytic cell |
| CN102249380A (en) * | 2011-05-20 | 2011-11-23 | 华东师范大学 | Efficient liquid flow type membrane capacitance desalter |
| CN106967994A (en) * | 2015-11-12 | 2017-07-21 | 德尔塔阀门公司 | For the ozone generation device and ozone generation device system being used together with tap |
| US11220754B2 (en) | 2015-11-12 | 2022-01-11 | Delta Faucet Company | Ozone generator for a faucet |
| US11634828B2 (en) | 2015-11-12 | 2023-04-25 | Delta Faucet Company | Ozone generator for a faucet |
| US11458214B2 (en) | 2015-12-21 | 2022-10-04 | Delta Faucet Company | Fluid delivery system including a disinfectant device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2636670B2 (en) | 1997-07-30 |
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