Atom-glue stabilized Pt-based intermetallic nanoparticles
Zhongliang Huang, Yingru Wang, Jing Xia, Shengnan Hu, Nanjun Chen, Tianyi Ding, Changhong Zhan, Chih‐Wen Pao, Zhiwei Hu, Wei‐Hsiang Huang, Tong Shi, Xiangmin Meng, Yong Xu, Liang Cao, Xiaoqing Huang
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.