Enhancement of oxygen reduction reactivity on TiN by tuning the work function via metal doping

Abstract

Oxide layers on conductive TiN have recently been investigated to catalyse the oxygen reduction reaction (ORR) in acidic media. The ORR reactivity, i.e., activity and selectivity, has been correlated with...

S-doped TiN supported N, P, S-tridoped TiO2 with hetero-phase junctions for fuel cell startup/shutdown durability

“…54 Four-electron (eqn ( 2)) and two-electron ORR (eqn (4)) in acidic media have been assumed to proceed via several elementary steps described by eqn (2a)-( 2e) and (4a)-(4c), respectively on conventional catalysts 55,56 and oxynitride catalysts. 57 Four electron ORR…”

Review of carbon-support-free platinum and non-platinum catalysts for polymer electrolyte fuel cells: will they feature in future vehicles?

“…12(g). 226,228 Ф is the difference in the potential energy of an electron between the vacuum and Fermi levels, which corresponds to the minimum energy required to extract an electron from a solid surface. Therefore, 4e − selectivity ( i.e.…”

“…38,223 Copyright 2016, Elsevier, Copyright 2017, American Chemical Society. (c) A normalized j at V = 0.6 V versus FCCJ load cycle number (j j 0 226 Copyright 2022, Royal Society of Chemistry. (i) RDE voltammograms of N, P-TiO 2 /S-TiN, N, Zr-TiO 2 /S-TiN, and N, P, S-TiO 2 /S-TiN catalysts before (solid curves) and after (dashed curves) 5000 FCCJ startup/shutdown cycles; the protocol is shown in the inset.…”

The metal–support interaction effect in the carbon-free PEMFC cathode catalysts

“…All of these advantages are conducive to an improved ORR activity. 134 Besides, Xiao et al synthesized a innovative and durable non-carbon titanium cobalt nitride (Ti 0.9 Co 0.1 N), which was used as a carrier (Fig. 14e) for Pt in PEMFC cathode catalysts.…”