Fe–N–C catalysts for oxygen electroreduction under external magnetic fields: Reduction of magnetic O2 to nonmagnetic H2O

Influence of the synthesis parameters on the proton exchange membrane fuel cells performance of Fe–N–C aerogel catalysts

“…N, S) and non-precious metals (e.g. Fe, Co) could be easily incorporated into the carbon matrix of CA [19] [20], which could improve the basicity and wettability of the resulting carbon surface, beneficial for the promotion of electron transfer reactions. However, so far, the ORR catalytic activities of the reported aerogel-derived catalysts in acid media are relatively low compared with those of Fe-N-C catalysts derived from metal organic frameworks, and in particular from zeolitic imidazolate frameworks (ZIF) [6,10,12,[21][22][23].…”

Pyrolysis of Porous Organic Polymers under a Chlorine Atmosphere to Produce Heteroatom-Doped Microporous Carbons

“…Such materials have already been shown to be efficient electrocatalysts for nitrogen and oxygen reduction and, more generally, efficient functional materials for energy storage/conversion devices. Moreover, we recently demonstrated that direct pyrolysis of N-doped polymers with the addition of an iron source yields active Fe-N-C electrocatalysts with S BET values of up to ~1500 m 2 g −1 [34].…”

The Effect of an External Magnetic Field on the Electrocatalytic Activity of Heat-Treated Cyanometallate Complexes towards the Oxygen Reduction Reaction in an Alkaline Medium

“…The saturation magnetization of CFeN@rGO-COOH was determined to be 7.5 emu g −1 , which is lower than pristine iron whose saturation magnetization can reach 220 emu g −1 [55]. The lower saturation magnetization value of the annealed catalyst may indicate less metallic iron [56]. The magnetic properties of the annealed catalyst (CFeN@rGO-COOH) were connected with its catalytic activity and ability to increase oxygen transportation.…”