Simple PEM water electrolyser model and experimental validation

Publication: Research - peer-reviewConference article – Annual report year: 2012

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Simple PEM water electrolyser model and experimental validation. / García-Valverde, R.; Espinosa Martinez, Nieves; Urbina, A.

In: International Journal of Hydrogen Energy, Vol. 37, No. 2, 2012, p. 1927-1938.

Publication: Research - peer-reviewConference article – Annual report year: 2012

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Author

García-Valverde, R.; Espinosa Martinez, Nieves; Urbina, A. / Simple PEM water electrolyser model and experimental validation.

In: International Journal of Hydrogen Energy, Vol. 37, No. 2, 2012, p. 1927-1938.

Publication: Research - peer-reviewConference article – Annual report year: 2012

Bibtex

@article{141f63e63639461d86db6e5d880d01d2,
title = "Simple PEM water electrolyser model and experimental validation",
publisher = "Pergamon",
author = "R. García-Valverde and {Espinosa Martinez}, Nieves and A. Urbina",
note = "10th International Conference on Clean Energy 2010",
year = "2012",
doi = "10.1016/j.ijhydene.2011.09.027",
volume = "37",
number = "2",
pages = "1927--1938",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",

}

RIS

TY - CONF

T1 - Simple PEM water electrolyser model and experimental validation

A1 - García-Valverde,R.

A1 - Espinosa Martinez,Nieves

A1 - Urbina,A.

AU - García-Valverde,R.

AU - Espinosa Martinez,Nieves

AU - Urbina,A.

PB - Pergamon

PY - 2012

Y1 - 2012

N2 - We propose in this work a simple model for atmospheric or low-pressure PEM water electrolysers, which allows for simulating the electrochemical, thermal and H2 output flow behaviours with enough precision for engineering applications. The model has been validated by good agreement with experimental measurements performed in two different electrolysers. The electrochemical submodel allows for obtaining the operating stack voltage from the input current and the stack temperature conditions. After non-linear fitting and statistical analysis from experimental data we conclude that the electrochemical submodel can be extrapolated for any PEM water electrolyser knowing two parameters with physical meaning: activation energy of the “water oxidation” for the anode electrocatalyst and the activation energy for proton transport in the solid polymer membrane. This submodel was validated with experimental polarisation curves at different temperatures from two different PEM water electrolysers. The standard error of the model was less than 0.03. The results showed that the worst values of the estimation were obtained below 50 °C, indicating that the assumption of constant anode charge transfer coefficient is not true at lower temperature, which is in accordance with recent results. In order to complete the electrochemical submodel, a practical methodology is presented here to obtain simple semi-empirical submodels for the H2 production and thermal behaviours for this kind of electrolysers. Both submodels are also discussed based on the experimental validations.

AB - We propose in this work a simple model for atmospheric or low-pressure PEM water electrolysers, which allows for simulating the electrochemical, thermal and H2 output flow behaviours with enough precision for engineering applications. The model has been validated by good agreement with experimental measurements performed in two different electrolysers. The electrochemical submodel allows for obtaining the operating stack voltage from the input current and the stack temperature conditions. After non-linear fitting and statistical analysis from experimental data we conclude that the electrochemical submodel can be extrapolated for any PEM water electrolyser knowing two parameters with physical meaning: activation energy of the “water oxidation” for the anode electrocatalyst and the activation energy for proton transport in the solid polymer membrane. This submodel was validated with experimental polarisation curves at different temperatures from two different PEM water electrolysers. The standard error of the model was less than 0.03. The results showed that the worst values of the estimation were obtained below 50 °C, indicating that the assumption of constant anode charge transfer coefficient is not true at lower temperature, which is in accordance with recent results. In order to complete the electrochemical submodel, a practical methodology is presented here to obtain simple semi-empirical submodels for the H2 production and thermal behaviours for this kind of electrolysers. Both submodels are also discussed based on the experimental validations.

U2 - 10.1016/j.ijhydene.2011.09.027

DO - 10.1016/j.ijhydene.2011.09.027

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 2

VL - 37

SP - 1927

EP - 1938

ER -