Preparation and Characteristics of Pt@Triazine Graphitic Nanoplatelets for High Performance Hydrogen Evolution Reaction
발표자
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초록
내용
Hydrogen (H2) is considered a renewable energy source that can replace fossil fuels. Platinum (Pt), one of the Hydrogen Evolution Reaction (HER) catalysts, has problems such as high price, scarcity, and low stability. In this work, the small amount of Pt nanoparticles was stably anchored on Triazine Graphitic Nanoplatelets (TGnP) by using chemical reduction, and HER performance was evaluated under acidic conditions. Despite the low Pt content (8.7 wt%), the Pt@TGnP exhibits outstanding HER activity with an overpotential of 32 mV at a current density of 10 mA cm–1, and the Tafel slope of 28 mV dec–1. This is because the triazine units of TGnP provide not only active sites for catalytic reactions, but anchoring sites for appropriately sized Pt nanoparticles. Therefore, Pt@TGnP as an efficient electrocatalyst can result in replacing the existing Pt-based catalyst.