biostudies-literatureRohib RMinistry of Trade, Industry and EnergyNational Research Foundation of Korea19832https://www.ebi.ac.uk/biostudies/studies/S-EPMC10645751biostudies-literatureUnknown13(1)A fundamental understanding of the electrochemical behavior of hybrid perovskite and nitrogen-doped (N-doped) carbon is essential for the development of perovskite-based electrocatalysts in various sustainable energy device applications. In particular, the selection and modification of suitable carbon support are important for enhancing the oxygen reduction reaction (ORR) of non-platinum group metal electrocatalysts in fuel cells. Herein, we address hybrid materials composed of three representative N-doped carbon supports (BP-2000, Vulcan XC-72 and P-CNF) with valid surface areas and different series of single, double and triple perovskites: Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ, (Pr_0.5Ba_0.5)CoO_3-δ, and Nd_1.5Ba_1.5CoFeMnO_9-δ (NBCFM), respectively. The combination of NBCFM and N-doped BP-2000 produces a half-wave potential of 0.74 V and a current density of 5.42 mA cm^-2 at 0.5 V versus reversible hydrogen electrode, comparable to those of the commercial Pt/C electrocatalyst (0.76 V, 5.21 mA cm^-2). Based on physicochemical and electrochemical analyses, we have confirmed a significant improvement in the catalytic performance of low-conductivity perovskite catalyst in the ORR when nitrogen-doped carbon with enhanced electrical conductivity is introduced. Furthermore, it has been observed that nitrogen dopants play active sites, contributing to additional performance enhancement when hybridized with perovskite.Scientific reportsSynergistic effect of perovskites and nitrogen-doped carbon hybrid materials for improving oxygen reduction reaction.PMC106457512020M3H4A310580020011105Kim CRohib RPark GGLee HLee SBRehman SULee EfalseSynergistic effect of perovskites and nitrogen-doped carbon hybrid materials for improving oxygen reduction reaction.A fundamental understanding of the electrochemical behavior of hybrid perovskite and nitrogen-doped (N-doped) carbon is essential for the development of perovskite-based electrocatalysts in various sustainable energy device applications. In particular, the selection and modification of suitable carbon support are important for enhancing the oxygen reduction reaction (ORR) of non-platinum group metal electrocatalysts in fuel cells. Herein, we address hybrid materials composed of three representative N-doped carbon supports (BP-2000, Vulcan XC-72 and P-CNF) with valid surface areas and different series of single, double and triple perovskites: Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ, (Pr_0.5Ba_0.5)CoO_3-δ, and Nd_1.5Ba_1.5CoFeMnO_9-δ (NBCFM), respectively. The combination of NBCFM and N-doped BP-2000 produces a half-wave potential of 0.74 V and a current density of 5.42 mA cm^-2 at 0.5 V versus reversible hydrogen electrode, comparable to those of the commercial Pt/C electrocatalyst (0.76 V, 5.21 mA cm^-2). Based on physicochemical and electrochemical analyses, we have confirmed a significant improvement in the catalytic performance of low-conductivity perovskite catalyst in the ORR when nitrogen-doped carbon with enhanced electrical conductivity is introduced. Furthermore, it has been observed that nitrogen dopants play active sites, contributing to additional performance enhancement when hybridized with perovskite.2023-01-01T00:00:00Z2023 Nov2026-06-01T08:38:05.383Z2025-04-05T00:01:54.801ZS-EPMC106457513796398010.1038/s41598-023-47304-4