| 摘要 |
PROBLEM TO BE SOLVED: To easily make a sealing member compact and to successfully obtain high pressure hydrogen.SOLUTION: A unit cell 12 constituting a water electrolyzer 10 has an electrolyte membrane/electrode structure 32 held between an anode side separator 34 and a cathode side separator 36. A water supply communicating hole 50a, a discharge communicating hole 50b and a high pressure hydrogen communicating hole 50c are formed respectively in a first projection 48a, a second projection 48b and a third projection 48c. In the third projection 48c, a first positioning hole 70a is formed adjacently to the high pressure hydrogen communicating hole 50c. In the first projection 48a, a second positioning hole part 70b is formed adjacently to the water supply communicating hole 50a. The first positioning hole part 70a is set with higher dimensional accuracy than that of the second positioning hole part 70b. |
