An electrochemical study of a PEM stack for water electrolysis

S. Siracusano*, V. Baglio, N. Briguglio, G. Brunaccini, A. Di Blasi, A. Stassi, R. Ornelas, E. Trifoni, V. Antonucci, A. S. Aricò

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

121 Citations (Scopus)


The electrochemical properties of a proton exchange membrane (PEM) stack electrolyzer (9 cells of 100 cm 2 geometrical area) were investigated at different temperatures. An amount of H 2 of ∼270 l h -1 was produced at 60 A (600 mA cm -2) and 70 °C under 876 W of applied electrical power. The corresponding specific energy consumed in the process was 3.24 Wh·l -1H 2. The Faradic and electrical efficiencies were determined. Overall stack efficiencies of 73% and 85%, at 60 A and 70 °C, with respect to the low and high heating value of hydrogen, respectively, were obtained. These results confirmed the successful scale-up of a previous lab-scale device.

Original languageEnglish
Pages (from-to)1939-1946
Number of pages8
JournalInternational Journal of Hydrogen Energy
Issue number2
Publication statusPublished - Jan 2012
Externally publishedYes


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