A highly stable Tungsten-Doped TiO2-Supported platinum electrocatalyst for oxygen reduction reaction in acidic media

Doped TiO2-supported IrO2 electrocatalysts with high activity and durability toward the acidic oxygen evolution reaction

“…It is interesting that the excellent performance of W-doped TiO 2 has been verified in some previous works, 31,37,49 which further confirms the reliability of the conclusions of this work. Moreover, we believe that this strong interfacial electron interaction generated by designing supports with a suitable energy band structure can also better play a role in the systematic screening of such interfacial catalysts 59,60 Synthesis of M-TiO 2 supports (M = V, Mn, Fe, Ni, Cu, Nb, W)…”

“…Pt/W-doped TiO 2 , in the ORR with 0.1 M HClO 4 , displayed a high electrochemical active area of 44.1 m 2 g Pt −1 and mass activity of 41.22 A g Pt −1 . 37 Nb, 29 V, 40 Ta, 41 and W 31 doped TiO 2 have been studied as supports for OER catalysts in PEMWEs. For example, Xu et al reported that the mass activity of Ir 38% /W x Ti 1− x O 2 with 38 wt% Ir loading is 5 times higher than that of Ir black in the OER.…”

“…Pt/W-doped TiO 2 , in the ORR with 0.1 M HClO 4 , displayed a high electrochemical active area of 44.1 m 2 g Pt −1 and mass activity of 41.22 A g Pt −1 . 37 Nb, 29 V, 40 Ta, 41 In this work, seven different metal elements M (M = V, Mn, Fe, Ni, Cu, Nb, W) are selected for doping anatase TiO 2 (the anatase phase has a longer electronic lifetime 42 ) with the same molar ratio (M/Ti), and combined with commercial IrO 2 nanoparticles to form M-doped TiO 2 supported IrO 2 electrocatalysts (M-TiO 2 @IrO 2 ). Subsequently, the OER performance of M-TiO 2 @IrO 2 in acidic media was compared and studied.…”

Highly efficient tungsten/molybdenum-based electrocatalysts for the oxygen reduction reaction: a review

“…W/Mo doping can adjust the electronic structure of the electrocatalyst to redistribute the charge density and spin density, optimizing the charge transfer ability and conductivity, and further improve the performance of ORR electrocatalysts. 186 For example, Pham et al 187 used a simple solvothermal method to prepare Pt/W-doped TiO 2 by doping W into TiO 2 . The effects of doped W element on the electronic structure, energy level and electrocatalytic activity of TiO 2 were studied.…”

Oxygen Reduction Catalyzed by Pt Nanoparticles Confined in Mesoporous Carbon Supports Doped with Single Fe Atoms

“…Metal oxides, particularly titanium dioxide (TiO 2 ), and carbon materials are the two most commonly employed supports for Pt-based catalysts. TiO 2 , owing to its remarkable chemical and electrochemical stability, as well as its strong interaction with Pt components, has garnered widespread attention. , Relevant studies have aimed to further enhance the activity of Pt catalysts supported on TiO 2 by reinforcing the interaction between Pt and TiO 2 and by employing doping strategies to improve the conductivity of TiO 2 . − Despite the extensive research conducted on Pt-based materials supported on TiO 2 , its very low electrical conductivity still restricts the electron transfer rate during electrochemical processes. In comparison, carbon materials possess excellent conductivity, which can facilitate the enhancement of Pt performance when compared to TiO 2 .…”