Do magnetically modified PtFe/C catalysts perform better in methanol electrooxidation?

PEMFC Performance in a Magnetic Field

“…below 8 mA cm -2 by the magnetic field ( Figure 7). This probably suggests that the electrochemical reaction (or the activity of the Pt catalyst) is not affected by the magnetic field of 0.5 T, as similarly reported in another paper [14]. On the other hand, the influence of the magnetic field on the polarisation curves becomes evident at higher current densities (i > 12 mA cm -2 ).…”

“…Some interesting phenomena concerning the behaviour of oxygen gas in a magnetic field have been reported [10][11][12] and their unique character has been applied for fuel cell systems [13][14][15][16][17]. Okada et al [17] have reported that oxygen reduction current is increased in a magnetic field by studying a simple model of fuel cell where Pt electrode is immersed in 0.05 M H 2 SO 4 and oxygen gas is supplied by bubbling into the solution.…”

Effect of Atomic Ordering on the Activity for Methanol and Formic Acid Oxidation of Pt‐Based Electrocatalysts

“…In the case of Pt–M (1:1) compounds, the transition from a disordered to an ordered phase occurs together with a change in the crystal structure, from an fcc structure to either an fct structure for PtM (M = Fe, Ni, Zn, and Cd) and PtNi 0.5 Co 0.5 catalysts, a body‐centered tetragonal (bct) structure for PtZn, or a mixed hexagonal close‐packed/cubic close‐packed (hcp/ccp) structure for PtAg . The disordered–ordered phase transition takes place by heat treatment at high temperature.…”

“…Regarding the MA, due to the higher ECSA of the disordered than the ordered catalysts, for both Pt 3 M and PtM catalysts, the values of ordered/disordered MA ratios (MA O /MA D ) were lower than those of SA O /SA D ratios for both the FAOR and the MOR. For example, the value of the (SA O /SA D /MA O /MA D ) ratio was 9.8 (FAOR) and 12.3 (MOR) for Pt 3 Ti, and 2.3 (MOR) for PtFe …”

Structure, Electronic, and Magnetic Properties of Binary PtnTM55–n (TM = Fe, Co, Ni, Cu, Zn) Nanoclusters: A Density Functional Theory Investigation

“…15,16 In contrast with the Pt(111)/Cu(111) and Pt(111)/Au(111) substrates, in which the inplane compressive or tensile strain plays a crucial role, [6][7][8]17,18 the formation of binary nanoclusters (from 1 nm to 10 nm) opens the possibility to release the strain energy by large structure relaxations and/or the formation of core-shell, onion-like, januslike, and homogeneous distribution configurations. 14,[19][20][21] Among a wide range of binary PtTM nanoclusters, which includes 3d, 4d, and 5d TM elements, the combination of Pt and TM 3d systems have received special interest in the last years, in particular, the following systems, PtFe, [22][23][24][25][26][27][28] PtCo, 11,23,[29][30][31][32][33][34][35] PtNi, 9,[36][37][38][39][40][41][42] PtCu, 13,34,38,[42][43][44][45][46] and PtZn. 47,48…”