• 研究论文 •
周石a,b,#, Muhammad Tariqb,#, Asif Nadeem Tabishc, Muhammad Salmand, 宁凡迪b, Muhammad Rayyan Tayyabe, 彭冉冉f, 郝梦庚g, 李文木g*, 周小春b*
a. 中国科学技术大学纳米学院, 合肥 230026, 中国;
b. 中国科学院苏州纳米技术与纳米仿生研究所, 苏州 215123, 中国;
c. Department of Chemical Engineering, University of Engineering and Technology, New Campus, Lahore, 39021, Pakistan;
d. Department of Chemical Engineering, University of Engineering and Technology, Lahore, 54890, Pakistan;
e. 华东理工大学, 上海 200237, 中国;
f. 中国科学技术大学, 合肥230026, 中国;
g. 中国科学院福建物质结构研究所, 福州 350002, 中国.
# Equal Contribution by Shi Zhou and Muhammad Tariq
Shi Zhoua,b,#, Muhammad Tariqb,#, Asif Nadeem Tabishc, Muhammad Salmand, Fandi Ningb, Muhammad Rayyan Tayyabe, Ranran Pengf, Menggeng Haog, Wenmu Lig*, Xiaochun Zhoub*
a. Nano Science and Technology Institute, University of Science and Technology of China, Hefei 230026, China;
b. Division of Advanced Nanomaterials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China;
c. Department of Chemical Engineering, University of Engineering and Technology, New Campus, Lahore, 39021, Pakistan;
d. Department of Chemical Engineering, University of Engineering and Technology, Lahore, 54890, Pakistan;
e. State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road Shanghai 200237, China;
f. Anhui Laboratory of Advanced Photon Science and Technology, Hefei National Laboratory for Physical Sciences at the Microscale and CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei 230026, China;
g. National Engineering Research Center for Optoelectronic Crystalline Materials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
# Equal Contribution by Shi Zhou and Muhammad Tariq
摘要： 廉价的铁-氮-碳（Fe-N-C）催化剂被视为质子交换膜燃料电池（PEMFCs）中铂族金属（PGM）催化剂的有前景的替代品。尽管在旋转圆盘电极（RDEs）上表现出稳健的活性，但它们在膜电极组件（MEAs）中的性能往往受到限制，如氧气（O2）扩散减少、过氧化氢（H2O2）生成量高、质子传导性低以及电子转移数较低。本研究通过调整阴极催化剂层（CCL）的组成，对包括质子传输、电子传导和空气呼吸式PEMFCs中的气体扩散在内的关键因素进行了研究。实验结果表明，当CCL中Fe-N-C催化剂的负载量为1 mg∙cm−2且Nafion含量为0.15 mg∙cm−2时，可获得峰值功率密度。研究发现，为增强疏水性而添加聚四氟乙烯（PTFE）对PEMFC性能有负面影响。此外，将不同种类的碳纳米管（CNTs）掺入CCL中，可使峰值功率密度显著提高30%以上，这归因于气体扩散和质子传导性的增强。本研究突出显示了气体传输和质子传导性在基于Fe-N-C的CCL中的关键作用。这些发现有助于推进经济型PEMFCs的合理设计原则，为推动高效且经济的技术发展提供了宝贵见解。
