Pt nanoparticles on Activated Phosphorus-Doped Graphitic Nanoplatelets for High Performance Hydrogen Evolution Reaction
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초록
내용
In this work, it prepares phosphorus-doped graphitic nanoplatelets (PGnP) through the mechanochemical reaction between graphite and phosphorus pentoxide (P2O5). And then, the PGnP is activated at 900℃ for 1h under CO2 to increase specific surface area (SSAs) and porosity to increase the mass transfer of catalysts. In result, the Pt/A_PGnP with lower Pt content (12.75 wt.%) shows similar overpotential and Tafel slopes but higher stability compared with the commercial Pt/C (Pt: 20 wt.%). The A_PGnP with the numerous active sites, high surface areas, and the incorporation of phosphorus (P) improves the performance of HER in in acidic media. So, the A_PGnP, as a new supporter, are valuable as enhancing catalytic performance for HER.