Cubic Mn 2 O 3 nanoparticles on carbon as bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions

Aerobic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid over Holey 2 D Mn2O3 Nanoflakes from a Mn‐based MOF

“…X‐ray photoelectron spectroscopy (XPS) of M400 nanoflakes revealed the chemical bonding states and composition in the near surface areas (Figure a and b). The spin‐orbit splitting value of 11.8 eV was estimated from the Figure a, which was very close to the value of Mn 2 O 3 . The asymmetrical Mn 2p 3/2 peaks at 641.8 eV can be deconvoluted into several sub‐peaks with binding energies of 640.8, 641.6, 642.8, and 644.8 eV, which were assigned to Mn 2+ , Mn 3+ , Mn 4+ , and shake‐up peaks, respectively .…”

Cauliflower‐Like Hierarchical Porous Nickel/Nickel Ferrite/Carbon Composite as Superior Bifunctional Catalyst for Lithium‐Air Battery

“…Such an equal current shows the excellent stability of the NNFOC catalyst towards ORR. Similar LSV data was reported by other researchers for confirming the electrode stability. Hence, the Li‐Air cell using the NNFOC nanocmposite as oxygen elctrode is expected to show good cycling stability.…”

Improving the power density of a Geobacter consortium‐based microbial fuel cell by incorporating a highly dispersed birnessite/C cathode

“…The high MPCF catalytic activity is probably due to the synergistic effect of MnO 2 and carbon surface. 65 Although the activity and mechanism by which the ORR takes place on MnO 2 surfaces have been studied extensively, 53,66 key parameters that improve the ORR are not yet understood. Most studies focusing on the electrons transferred during ORR catalysis were done using voltammetry.…”

“…Most studies focusing on the electrons transferred during ORR catalysis were done using voltammetry. 12,65,67 A 2e − O 2 reduction pathway is accepted for C cathodes (curve (b)) 68 while a pseudo 4e − O 2 reduction pathway is accepted for MnO 2 surfaces. 53 A 4e − O 2 reduction is the best pathway for developing an effective electrocatalyst because it can minimize the energy required and double the electrons transferred.…”