Abstract

Novel iridium-based electrocatalysts supported on SnO2/Vapor-Grown Carbon Fiber (VGCF) have been developed and characterized by FESEM, STEM, and XPS. The membrane electrode assembly (MEA) made with the IrO2/Sn0.98Nb0.02O2/VGCF electrocatalyst exhibited a decrease in overvoltage especially under the low current density compared to the MEA made with conventional IrO2/Ti electrocatalyst. Iridium-based SnO2/VGCF can be a good candidate for anode catalysts of water electrolysis cells.

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