RT Conference Proceedings
T1 Preparation of N-doped Carbon/Metal Phosphides as Promising Trifunctional Electrocatalysts Toward the OER, ORR and HER
A1 Vílchez-Cózar, Álvaro
A1 Bazaga-García, Montse
A1 Marrero-López, David
A1 Olivera-Pastor, Pascual
A1 Demadis, Konstantinos D.
A1 Cabeza-Díaz, Aurelio
A1 Pérez-Colodrero, Rosario Mercedes
AB Sustainable energy storage and conversion technologies, such as electrochemical water splitting and fuel cells,attracts increasing attention as alternative processes to advance toward a global decarbonation. However, the highcost, scarcity, and poor stability of the most active electrocatalysts, mainly based on noble metal (Pt, RuO2,IrO2,…), difficult severely their large-scale production and use. In this regard, the development of earth-abundantelectrocatalysts, with high activity for the different processes, is needed.Several imidazole-containing metal etidronates, MLIm-n (M2+= Fe, Co, Ni and solid solutions; L= ETID; Im=Imidazole; n= [0, 3]), were prepared using different synthetic procedures. Thermal reduction of MLIm-n in5%H2–Ar at different temperatures resulted on core–shell N-doped carbon/TMPs with variable content of MP andMxP as crystalline phases. Their electrocatalytic activities have been widely studied by cyclic and linear sweepvoltammetry, impedance spectroscopy, transmission electron microscopy, and XPS analysis. Preliminary resultsreveal that factors such as the presence of the imidazole and the metal coordination environment in the precursorsamples determine the final composition and electrochemical properties of the resulting pyrolyzed derivatives. So,the Co2+- derivative, CoLIm-0@800, with a composition CoP/Co2P= 80/20 wt. %, exhibited the bestelectrocatalytic properties toward OER/ORR/HER as well as good capabilities as anode for overall water splittingin comparison to the expensive reference RuO2 electrocatalyst.
YR 2022
FD 2022-07-27
LK https://hdl.handle.net/10630/24873
UL https://hdl.handle.net/10630/24873
LA eng
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026