AI Article Synopsis
- A new method was developed to create an efficient hydrogen evolution reaction (HER) catalyst with low platinum loading, using a PtNi alloy coated on porous nitrogen-doped carbon.
- The catalyst was extensively analyzed using various techniques, such as XRD and SEM, revealing impressive characteristics.
- It outperformed the standard commercial catalyst with a lower overpotential of 26 mV, faster HER kinetics, and smaller charge transfer resistance due to the beneficial alloying effect between Pt and Ni.
Article Abstract
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, 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 due to the small charge transfer resistance, the alloying effect between Pt and Ni, and the interaction between PtNi alloy and carrier.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8778313 | PMC |
| http://dx.doi.org/10.3390/molecules27020499 | DOI Listing |
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