Tailoring Zirconia Supported Intermetallic Platinum Alloy via Reactive Metal-Support Interactions for High-Performing Fuel Cells

Lin，Zijie1; Sathishkumar，Nadaraj2; Xia，Yu3; Li，Shenzhou1; Liu，Xuan1; Mao，Jialun1; Shi，Hao1; Lu，Gang2; Wang，Tanyuan1; Wang，Hsing Lin3; Huang，Yunhui1; Elbaz，Lior4; Li，Qing1

2024-06-21

10.1002/anie.202400751

Angewandte Chemie - International Edition   影响因子和分区

1433-7851

1521-3773

Developing efficient and anti-corrosive oxygen reduction reaction (ORR) catalysts is of great importance for the applications of proton exchange membrane fuel cells (PEMFCs). Herein, we report a novel approach to prepare metal oxides supported intermetallic Pt alloy nanoparticles (NPs) via the reactive metal-support interaction (RMSI) as ORR catalysts, using Ni-doped cubic ZrO (Ni/ZrO) supported L1−PtNi NPs as a proof of concept. Benefiting from the Ni migration during RMSI, the oxygen vacancy concentrations in the support are increased, leading to an electron enrichment of Pt. The optimal L1−PtNi−Ni/ZrO−RMSI catalyst achieves remarkably low mass activity (MA) loss (17.8 %) after 400,000 accelerated durability test cycles in a half-cell and exceptional PEMFC performance (MA=0.76 A mg at 0.9 V, peak power density=1.52/0.92 W cm in H−O/−air, and 18.4 % MA decay after 30,000 cycles), representing the best reported Pt-based ORR catalysts without carbon supports. Density functional theory (DFT) calculations reveal that L1−PtNi−Ni/ZrO−RMSI requires a lower energetic barrier for ORR than L1−PtNi−Ni/ZrO (direct loading), which is ascribed to a decreased Bader charge transfer between Pt and *OH, and the improved stability of L1−PtNi−Ni/ZrO−RMSI compared to L1−PtNi−C can be contributed to the increased adhesion energy and Ni vacancy formation energy within the PtNi alloy.

fuel cells intermetallics oxygen reduction reaction reactive metal-support interaction zirconia

SCI ; EI

英语

其他

CHEMISTRY

2-s2.0-85193909699

Scopus

1.State Key Laboratory of Material Processing and Die & Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan,430074,China
2.Department of Physics and Astronomy,California State University Northridge,Northridge,91330,United States
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Chemistry and the Institute of Nanotechnology and Advanced Materials,Bar-Ilan University,Ramat-Gan,5290002,Israel

Lin，Zijie,Sathishkumar，Nadaraj,Xia，Yu,et al. Tailoring Zirconia Supported Intermetallic Platinum Alloy via Reactive Metal-Support Interactions for High-Performing Fuel Cells[J]. Angewandte Chemie - International Edition,2024,63(26).

Lin，Zijie.,Sathishkumar，Nadaraj.,Xia，Yu.,Li，Shenzhou.,Liu，Xuan.,...&Li，Qing.(2024).Tailoring Zirconia Supported Intermetallic Platinum Alloy via Reactive Metal-Support Interactions for High-Performing Fuel Cells.Angewandte Chemie - International Edition,63(26).

Lin，Zijie,et al."Tailoring Zirconia Supported Intermetallic Platinum Alloy via Reactive Metal-Support Interactions for High-Performing Fuel Cells".Angewandte Chemie - International Edition 63.26(2024).