Batch Preparation of PtCo/C for High-Performance Oxygen Reduction Reaction Based on a Continuous-Flow Microwave Pipeline Reactor

作者：Lu, Jiapeng; Liu, Zhuangzhi; Zeng, Xianghui^*; Zhang, Lingyun; Fang, Wei; Gao, Weitao; Yin, Yanan; Zhu, Xuejun; Yang, Tao; Du, Xing; Wang, Cheng^*; Chen, Hui^*; Zhao, Lei

来源：Energy and Fuels, 2024, 38(3): 2387-2395.

DOI：10.1021/acs.energyfuels.3c03762

• ALLOY CATALYSTS
• ELECTROCATALYSTS
• NANOPARTICLES
• PLATINUM
• NANOFLOWERS
• SHELL
• PT/C
• CO

Alloying Pt with 3d transition metals has proven to be the most attractive oxygen reduction reaction electrocatalysts for proton exchange membrane fuel cells with improved catalytic activity and stability; thus, their large-scale and cost-effective production is in high demand. Herein, we present a strategy for the batch preparation of PtCo/C with a highly uniform morphology and tiny PtCo dispersions of 2.48 nm using a continuous-flow microwave pipeline reactor. Due to its unique structure, which greatly facilitated the catalytic kinetics, the prepared PtCo/C catalyst exhibited an initial mass activity of 485.6 mA center dot mg(pt)(-1) at 0.9 V, which was 3.6 times higher than that of the commercial Pt/C catalysts. The as-obtained PtCo/C was able to maintain 74.6% of the initial activity after 30,000 accelerated cycle tests. Furthermore, a maximum power density of 1.76 W center dot cm(-2) was attained in a single-cell test under 0.2 mg center dot cm(-2) Pt loading conditions, far exceeding those of commercial Pt/C catalysts.

• 单位
  清华大学