Nanostructured Mn2O3/Pt/CNTs selective electrode for oxygen reduction reaction and methanol tolerance in mixed-reactant membraneless micro-DMFC

Manganese oxides/LaMnO3 perovskite materials and their application in the oxygen reduction reaction

“…3S. These materials exhibit two different voltammetric peaks associated with Mn redox processes [18,28,30]. Mn 2þ /Mn 3þ oxidation occurs during the forward scan producing peaks at around 0.7 V. Moreover, the presence of a small anodic peak at 0.9 V in some samples is associated with the formation of MnOOH species.…”

“…For example, MnO 2 can be synthesized with different structures, namely a-MnO 2 and b-MnO 2 , but it seems that a-MnO 2 shows higher surface area and activity towards ORR [11]. The capability of Mn 2 O 3 -based compounds to catalyze the 4-electron pathway of the ORR mechanism was also reported [17,18] and some researchers considered Mn 3 O 4 as an interesting material for this reaction because of the mixed-valence of Mn. However, due to its intrinsic low conductivity, Mn 3 O 4 has been combined with conductive components, such as doped carbons, to improve catalytic activity [15,16].…”

An Fe-N/S-C hybrid electrocatalyst derived from bimetal-organic framework for efficiently electrocatalyzing oxygen reduction reaction in acidic media

“…The excellent tolerance to the methanol poisoning effect results from the much lower ORR potential of the Fe-N/S-C-10% catalyst compared to that required for methanol oxidation (Fig. 9f) [38,39]. Therefore, Fe-N/S-C-10% can be used as an alternative Pt-free catalyst for ORR with high activity, excellent durability and desirable methanol tolerance in acidic media.…”

Membrane‐less micro fuel cell system design and performance: An overview

“…This work showed that a high power density can be generated by using this AgSn catalyst in an alkaline fuel cell system. Recently, Martinez et al expanded upon this finding by growing the Mn 2 O 3 /Pt catalyst on CNTs by a pulsed laser deposition technique. The power generated by this system was 2.16 mW cm −2 and 0.54 V of OCV.…”