Development of high pressure membraneless alkaline electrolyzer |
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| Affiliation: | 1. A.M. Pidhorny Institute of Mechanical Engineering Problems of NASU (IPMash NAS of Ukraine), 2/10, Pozharsky Str., 61046, Kharkiv, Ukraine;2. Institute of Mechanics, Vietnam Academy of Science and Technology, 264, Doi Can, Ba Dinh, Hanoi, Viet Nam |
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| Abstract: | A technology for cyclic generation of hydrogen and oxygen using electrodes made of variable valency material that does not need the use of separating ion-exchange membranes is presented. The technological solution enables to fabricate electrolyzers for uninterrupted producing high-pressure hydrogen with reduced energy intensity of the production. The total work for compressing 1 m3 of hydrogen and 0.5 m3 of oxygen has been estimated. Results of investigation of influence of discrete supply of DC current to the electrolysis cell, in order to improve the processes of gas evolution and to simplify the power systems of the electrolysis plant, have been considered. There is also considered an electrolysis installation equipped with a thermosorption compressor in which LaNi5 is used as a hydride-forming compound. The comparative characteristics of the developed electrolyzer and the currently used hydrogen generators are given. |
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| Keywords: | Alkaline electrolyzer Active electrode Uninterrupted hydrogen generation Power supply optimization Thermosorption compressor |
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