Electrospun Pt/SnO2 nanofibers as an excellent electrocatalysts for hydrogen oxidation reaction with ORR-blocking characteristic

Pt/SnO2 nanofibers were synthesized via electrospinning. The unique electrochemical properties were in evidence based on the activity that allowed a hydrogen oxidation reaction and inhibit an oxygen reduction reaction. A high electrochemically active surface area value of 81.17 m2/g-Pt was achieved with ultra-low Pt loading (4.03 wt.%). The kinetics of a hydrogen oxidation reaction was investigated using a linear sweep voltammetry technique under a hydrogen atmosphere. A diffusion-limited current was achieved at 0.07 V and was stable at a high potential. This preparation technique shows great promise for the design of anode electrocatalyst material for fuel cells.

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► Pt/SnO2 nanofiber was synthesized using electrospinning.
► Pt nanoparticle can be grown in situ on SnO2 nanofiber matrix.
► Ultra-low Pt loading gave the high electrochemically active surface area value.
► Pt/SnO2 nanofibers is an excellent electrocatalyst for hydrogen oxidation reaction with ORR-blocking characteristic.