Green and easy synthesis of P-doped carbon-based electrocatalysts for the hydrogen evolution reaction - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Carbon Année : 2023

Green and easy synthesis of P-doped carbon-based electrocatalysts for the hydrogen evolution reaction

Résumé

In this study, efficient electrodes for the hydrogen evolution reaction (HER) based on low-cost and metal-free carbon catalysts are presented. Phytic acid, a biosourced molecule containing carbon (C) and phosphorus (P), was found to be an excellent precursor for producing carbon materials with high P content, depending on the carbonization temperature, from 27.9 wt.% at 700 °C to 7.3 wt.% at 1000 °C. A green and easy route to produce P-doped carbon materials by heat treatment of this biosourced precursor without the need for additional reagents is thus proposed. We show that the conversion of P-O-type groups into P-C-type species is of paramount importance for improving the catalytic activity in HER of P-doped carbon materials. P-C-type groups appear to be the key factor in the electrocatalytic activity, reaching an onset potential of - 0.27 V. This study sheds light on the origin of the catalytic activity of P-doped carbons, in which P is expected to modify the homogenous distribution of the electron density of undoped carbons and increase their catalytic performance.

Domaines

Catalyse Matériaux
Fichier principal
Vignette du fichier
Manuscript Fítico-Carbon-hal.pdf (1.56 Mo) Télécharger le fichier
SUPPORTING INFORMATION_Carbon_revisedvf.pdf (841.81 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Licence : Copyright (Tous droits réservés)
Licence : Copyright (Tous droits réservés)

Dates et versions

hal-04126075 , version 1 (13-06-2023)

Licence

Copyright (Tous droits réservés)

Identifiants

Citer

Sergio García-Dalí, Javier Quílez-Bermejo, Jimena Castro-Gutiérrez, Niki Baccile, María Izquierdo, et al.. Green and easy synthesis of P-doped carbon-based electrocatalysts for the hydrogen evolution reaction. Carbon, 2023, 212, pp.118154. ⟨10.1016/j.carbon.2023.118154⟩. ⟨hal-04126075⟩
121 Consultations
27 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More