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Energies
Volume 15
Issue 21
10.3390/en15218090
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Article

Modeling the Influence of the Electrolyte Concentration on Electrical Characteristics of an Alkaline Electrolyzer

by
Krzysztof Górecki
*,
Emilian Świtalski
and
Paweł Górecki
Department of Marine Electronics, Gdynia Maritime University, 81-225 Gdynia, Poland
*
Author to whom correspondence should be addressed.
Energies 2022, 15(21), 8090; https://doi.org/10.3390/en15218090
Submission received: 26 September 2022 / Revised: 23 October 2022 / Accepted: 25 October 2022 / Published: 31 October 2022
(This article belongs to the Section A5: Hydrogen Energy)
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Abstract

This paper presents the results of investigations into modeling the DC and dynamic characteristics of an alkaline electrolyzer. A model of the device under consideration is proposed in the form of analytical relationships in which the coefficients depend on the concentration of the potassium hydroxide solution contained in the electrolyzer under consideration. The correctness of the proposed model is verified by comparing the calculated and measured current–voltage characteristics and the dependence of the module of the impedance of the electrolyzer on the frequency obtained at different values of the electrolyte concentration. The dependence of the time needed to produce a given portion of hydrogen on the supply current and the electrolyte concentration is also presented. Good compliance with the calculation and measurement results is obtained over a wide range of voltage and current, frequency, and concentration of the electrolyte.
Keywords: alkaline electrolyzer; modelling; SPICE; DC characteristics; AC characteristics; measurements; hydrogen alkaline electrolyzer; modelling; SPICE; DC characteristics; AC characteristics; measurements; hydrogen

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MDPI and ACS Style

Górecki, K.; Świtalski, E.; Górecki, P. Modeling the Influence of the Electrolyte Concentration on Electrical Characteristics of an Alkaline Electrolyzer. Energies 2022, 15, 8090. https://doi.org/10.3390/en15218090

AMA Style

Górecki K, Świtalski E, Górecki P. Modeling the Influence of the Electrolyte Concentration on Electrical Characteristics of an Alkaline Electrolyzer. Energies. 2022; 15(21):8090. https://doi.org/10.3390/en15218090

Chicago/Turabian Style

Górecki, Krzysztof, Emilian Świtalski, and Paweł Górecki. 2022. "Modeling the Influence of the Electrolyte Concentration on Electrical Characteristics of an Alkaline Electrolyzer" Energies 15, no. 21: 8090. https://doi.org/10.3390/en15218090

APA Style

Górecki, K., Świtalski, E., & Górecki, P. (2022). Modeling the Influence of the Electrolyte Concentration on Electrical Characteristics of an Alkaline Electrolyzer. Energies, 15(21), 8090. https://doi.org/10.3390/en15218090

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