Method for Calculation of the Current Concentration of Alkali in the Electrolyte During the Water Electrolysis Process

Andrii Rusanov; Victor Solovey; Mykola Mykolaevich Zipunnikov; Vitaliy Semikin

doi:10.17721/fujcV9I2P27-33

Authors

Andrii Rusanov A.M. Pidhorny Institute of Mechanical Engineering Problems of NASU, 2/10, Pozharsky str., 61046, Kharkiv, Ukraine
Victor Solovey A.M. Pidhorny Institute of Mechanical Engineering Problems of NASU, 2/10, Pozharsky str., 61046, Kharkiv, Ukraine
Mykola Mykolaevich Zipunnikov A.M. Pidhorny Institute of Mechanical Engineering Problems of NASU http://orcid.org/0000-0002-0579-2962
Vitaliy Semikin A.M. Pidhorny Institute of Mechanical Engineering Problems of NASU, 2/10, Pozharsky str., 61046, Kharkiv, Ukraine

DOI:

https://doi.org/10.17721/fujcV9I2P27-33

Keywords:

water electrolysis, electrolyte, alkali concentration, electrical conductivity

Abstract

The article proposes a method for calculation of the current concentration of alkali in the electrolyte, taking into account the consumption and replenishment of feed water in the electrolyzer, which allows to estimate the specific electrical conductivity of the electrolyte during electrolysis process. This is important to increase the efficiency of the water electrolysis process. The calculated change of the current concentration of alkali in the electrolyte in high-pressure electrolyzers taking into account the volume of produced hydrogen is given. With the usage of the proposed method, it is established that the current concentrations of alkali in the electrolyte during the operation of the developed high-pressure electrolyzers are in the range of optimal concentrations, where the specific electrical conductivity of the electrolyte is close to maximum and changes according to alkali concentration change.

Author Biography

Mykola Mykolaevich Zipunnikov, A.M. Pidhorny Institute of Mechanical Engineering Problems of NASU

Hydrogen Energetics Department, Senior Researcher

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