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Atom-glue stabilized Pt-based intermetallic nanoparticles

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Hu,  Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Huang, Z., Wang, Y., Xia, J., Hu, S., Chen, N., Ding, T., et al. (2024). Atom-glue stabilized Pt-based intermetallic nanoparticles. Science Advances, 10(40): eadq6727, pp. 1-10. doi:10.1126/sciadv.adq6727.


Cite as: https://hdl.handle.net/21.11116/0000-0010-2F64-A
Abstract
Pt-based nanoparticles (NPs) have been widely used in catalysis. However, this suffers from aggregation and/or sintering at working conditions. We demonstrate a robust strategy for stabilizing PtCo NPs under high temperature with strong interaction between M-N-C and PtCo NPs with Pt-M-N coordination, namely, "atom glue." Such atom glue for stabilizing Pt-based NPs can be extended to Zn, Mn, Fe, Ni, Co, and Cu, being a versatile strategy for stabilizing PtCo NPs, which substantially promotes the performance toward oxygen reduction reaction (ORR) and fuel cell. Impressively, the mass activity (MA) reaches 2.99 A mg(Pt)(-1) for ORR over g-Zn-N-C/PtCo, and 79.3% of the initial MA is maintained after 90K cycles in fuel cell. This work provides a versatile strategy for stabilizing Pt-based NPs via atom glue, which is likely to spark widespread interest across various fields.