Fig. 4: ORR electrochemical activity of SeM‒C2N (M = Mn, Co, Ni, Cu, Mo, etc.) in 0.1 M KOH.
From: Precisely designing asymmetrical selenium-based dual-atom sites for efficient oxygen reduction
a CV curves of SeM‒C2N in N2 (dotted line)- and O2 (solid line)-saturated electrolytes. b ORR polarisation curves; series solution resistance (Rs) are 3.8, 4.7, 6.8, 4.6, and 8.9 Ω for SeM‒C2N (M= Mn, Co, Ni, Cu, Mo), respectively. c Tafel plots; d summary of E1/2 and Jk; e semicircular characteristics of the EIS curves; f Cdl values for all the samples. g‒i LSV curves at different speeds (400‒2500 rpm) and matching K‒L plots at different potentials of SeCu‒C2N, SeMo‒C2N, and SeMn‒C2N, respectively. All the potentials have not been iR-corrected.
