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PtNi Alloy Coated in Porous Nitrogen-Doped Carbon as Highly Efficient Catalysts for Hydrogen Evolution Reactions
| Content Provider | MDPI |
|---|---|
| Author | Song, Xuyan He, Yunlu Wang, Bo Peng, Sanwen Tong, Lin Liu, Qiang Yu, Jun Tang, Haolin |
| Copyright Year | 2022 |
| Description | The development of low platinum loading hydrogen evolution reaction (HER) catalysts with high activity and stability is of great significance to the practical application of hydrogen energy. This paper reports a simple method to synthesize a highly efficient HER catalyst through coating a highly dispersed PtNi alloy on porous nitrogen-doped carbon (MNC) derived from the zeolite imidazolate skeleton. The catalyst is characterized and analyzed by physical characterization methods, such as XRD, SEM, TEM, BET, XPS, and LSV, EIS, it, v-t, etc. The optimized sample exhibits an overpotential of only 26 mV at a current density of 10 mA $cm^{−2}$, outperforming commercial 20 wt% Pt/C (33 mV). The synthesized catalyst shows a relatively fast HER kinetics as evidenced by the small Tafel slope of 21.5 mV $dec^{−1}$ due to the small charge transfer resistance, the alloying effect between Pt and Ni, and the interaction between PtNi alloy and carrier. |
| Starting Page | 499 |
| e-ISSN | 14203049 |
| DOI | 10.3390/molecules27020499 |
| Journal | Molecules |
| Issue Number | 2 |
| Volume Number | 27 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-14 |
| Access Restriction | Open |
| Subject Keyword | Molecules Hydrogen Evolution Reaction Porous Carbon Ptni Alloy |
| Content Type | Text |
| Resource Type | Article |
