Combining phosphate species and stainless steel cathode to enhance hydrogen evolution in microbial electrolysis cell (MEC) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Electrochemistry Communications Année : 2010

Combining phosphate species and stainless steel cathode to enhance hydrogen evolution in microbial electrolysis cell (MEC)

Résumé

Microbial electrolysis cells (MEC) must work around neutral pH because of microbial catalysis at the anode. To develop a hydrogen evolution cathode that can work at neutral pH remains a major challenge in MEC technology. Voltammetry performed at pH 8.0 on rotating disk electrodes showed that the presence of phosphate species straightforwardly multiplied the current density of hydrogen evolution, through the so-called cathodic deprotonation reaction. The mechanism was stable on stainless steel cathodes whereas it rapidly vanished on platinum. The phosphate/stainless steel system implemented in a 25 L MEC with a marine microbial anode led to hydrogen evolution rates of up to 4.9 L/h/m2 under 0.8 V voltage, which were of the same order than the best performance values reported so far.

Domaines

Génie chimique
Fichier principal
Vignette du fichier
De_Sylva_3364.pdf (316.07 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03557704 , version 1 (04-02-2022)

Identifiants

Citer

Leonardo de Silva Munoz, Benjamin Erable, Luc Etcheverry, Julien Riess, Régine Basséguy, et al.. Combining phosphate species and stainless steel cathode to enhance hydrogen evolution in microbial electrolysis cell (MEC). Electrochemistry Communications, 2010, 1 (2), pp.183-186. ⟨10.1016/j.elecom.2009.11.017⟩. ⟨hal-03557704⟩
18 Consultations
16 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More