Method for controlling hydrogen generation system, and hydrogen generation system
AssigneeEneos Corporation
InventorsKosuke Harada, Koji Matsuoka, Hirofumi Takami, Yasushi Sato, Hirokazu Kojima, Naoya Itou, Taku Tsujimura, Hirohide Furutani
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Abstract
A method for controlling a hydrogen generation system includes controlling the potentials of an electrode for oxygen generation and an electrode for hydrogen generation included in an electrolyzer so that the potential change is smaller in the electrode for oxygen generation or the electrode for hydrogen generation having a larger deterioration rate than in the electrode having a smaller deterioration rate.
Claims9
A method for controlling a hydrogen generation system, the hydrogen generation system including
- an electrolyzer structured to generate hydrogen by electrolysis of water, and
- a power source structured to supply an electrolytic current to the electrolyzer,
- the electrolyzer including an electrode for oxygen generation, an electrode for hydrogen generation, an oxygen generation electrode chamber accommodating the electrode for oxygen generation, a hydrogen generation electrode chamber accommodating the electrode for hydrogen generation, and a diaphragm separating the oxygen generation electrode chamber and the hydrogen generation electrode chamber,
- the electrode for oxygen generation having a deterioration characteristic of deteriorating at a predetermined deterioration rate dAN by a potential change generated during an operation stop in which the electrolytic current is not supplied to the electrolyzer,
- the electrode for hydrogen generation having a deterioration characteristic of deteriorating at a predetermined deterioration rate dCA by a potential change generated during the operation stop,
- the method comprising controlling a potential of the electrode for oxygen generation and a potential of the electrode for hydrogen generation so that, the potential change is smaller in the electrode for oxygen generation or the electrode for hydrogen generation having a larger deterioration rate than in the electrode having a smaller deterioration rate.
A hydrogen generation system comprising:
- an electrolyzer including an electrode for oxygen generation, an electrode for hydrogen generation, an oxygen generation electrode chamber accommodating the electrode for oxygen generation, a hydrogen generation electrode chamber accommodating the electrode for hydrogen generation, and a diaphragm separating the oxygen generation electrode chamber and the hydrogen generation electrode chamber, the electrolyzer structured to generate hydrogen by electrolysis of water;
- a power source structured to supply an electrolytic current to the electrolyzer;
- and
- a controller structured to control a potential of the electrode for oxygen generation and a potential of the electrode for hydrogen generation,
- the electrode for oxygen generation having a deterioration characteristic of deteriorating at a predetermined deterioration rate dAN by a potential change generated during an operation stop in which the electrolytic current is not supplied to the electrolyzer,
- the electrode for hydrogen generation having a deterioration characteristic of deteriorating at a predetermined deterioration rate dCA by a potential change generated during the operation stop,
- the controller structured to control a potential of the electrode for oxygen generation and a potential of the electrode for hydrogen generation so that, the potential change is smaller in the electrode for oxygen generation or the electrode for hydrogen generation having a larger deterioration rate than in the electrode having a smaller deterioration rate.
Dependencies are inferred from the claim text.