SnO2 nanocluster supported Pt catalyst with high stability for proton exchange membrane fuel cells

Sb-Doped SnO2Supported Platinum Catalyst with High Stability for Proton Exchange Membrane Fuel Cells

“…8 However, the conductivity of the prepared SnO 2 was low (at the level of 10 −4 S cm −1 ), which was unfavorable for the ORR. In this work, we prepared the ATO nanoparticles with high electron conductivity as well as large surface area, and used it as the support of the ORR catalyst.…”

Antimony doped tin oxide applied in the gas diffusion layer for proton exchange membrane fuel cells

“…5 indicated the oxidation current curves of GDLs prepared with ATO and XC-72 carbon powder at 1.2 V vs SCE for 55 h. As shown, the oxidation current of GDL prepared with ATO was smaller compared to the GDL prepared with XC-72 carbon powder, which could be included carbon powder was prone to corrosion when the oxidation potential exceeded 0.6 V [27]. Under the 1.2 V testing condition, the corrosion reaction of carbon occurred, generated the quinone-hydroquinone region and accordingly resulted in the increment of current density at first some time [18].…”

Highly effective oxygen reduction activity and durability of antimony-doped tin oxide modified PtPd/C electrocatalysts

“…2,3 At present, the most widely used cathode catalyst system is Pt in the form of small nanoparticles supported on amorphous carbon particles. [6][7][8] The electrochemical corrosion of the carbon support causes agglomeration and sintering of the Pt catalyst particles, resulting in a decreased electrochemical surface area (ESA) and deteriorative activity of the catalyst. [6][7][8] The electrochemical corrosion of the carbon support causes agglomeration and sintering of the Pt catalyst particles, resulting in a decreased electrochemical surface area (ESA) and deteriorative activity of the catalyst.…”

“…9 These effects would lead to a rapid degradation of the Pt catalyst and thus shorten the lifetime of the PEMFCs. 12 To solve the carbon corrosion issue, alternative supports are being developed with the objectives to increase both the support durability and the catalyst activity through improving the catalyst-support interaction by replacing 6,7,[13][14][15][16][17] or combining 18,19 carbon with transition metal oxides, such as antimony-doped tin oxide (ATO). 10,11 Carbon-supported PtPd catalysts with highly catalytic activity and long-term durability have received increasing interest for the application in ORR.…”