Li Yashu, Wang Nan, Zhao Lu, Liu Xuanhe, Wang Lin, Xie Chengcheng, Li Jing
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
School of Humanities and Tourism, Yibin Vocational and Technical College, Yibin 644100, China.
Molecules. 2025 Apr 10;30(8):1708. doi: 10.3390/molecules30081708.
Developing low-cost, efficient, and scalable non-precious metal electrocatalysts for the oxygen reduction reaction (ORR) remains a critical challenge in the field of energy conversion. Among various candidates, Fe-N-doped carbon materials have garnered attention as promising alternatives to commercial Pt/C catalysts for ORR. In this study, we report an Fe-N catalyst synthesized by incorporating iron phthalocyanine with waste leaves as the carbon source. This catalyst exhibited an excellent four-electron ORR activity and the half-wave potential (E) reaches 0.875 V, which was superior to that of commercial Pt/C (E = 0.864 V). Additionally, the catalyst exhibits superior methanol tolerance and stability compared to commercial Pt/C. This approach, which utilizes biomass waste for the synthesis of electrocatalysts, not only provides an effective solution for reducing environmental waste but also addresses the issue of sluggish cathodic ORR kinetics in fuel cells, making it suitable for low-cost, large-scale industrial production.
开发用于氧还原反应（ORR）的低成本、高效且可扩展的非贵金属电催化剂仍然是能量转换领域的一项关键挑战。在各种候选材料中，铁氮掺杂碳材料作为ORR商业Pt/C催化剂的有前景的替代品而受到关注。在本研究中，我们报道了一种通过将铁酞菁与废树叶作为碳源结合而合成的铁氮催化剂。该催化剂表现出优异的四电子ORR活性，半波电位（E）达到0.875 V，优于商业Pt/C（E = 0.864 V）。此外，与商业Pt/C相比，该催化剂表现出优异的甲醇耐受性和稳定性。这种利用生物质废料合成电催化剂的方法，不仅为减少环境废物提供了有效解决方案，还解决了燃料电池中阴极ORR动力学缓慢的问题，使其适用于低成本、大规模工业生产。
