Chu Ruixia, Zhang Hongtao, Qiu Fangyuan, Fu Wenjun, Huang Wanyou, Li Runze, Li Zhenyu, Jin Xiaoyue, Wang Yan
Automotive Engineering College, Shandong Jiaotong University, Jinan 250357, China.
Intelligent Testing and High-End Equipment of Automotive Power Systems, Shandong Province Engineering Research Center, Jinan 250357, China.
Materials (Basel). 2025 Jun 16;18(12):2826. doi: 10.3390/ma18122826.
Proton exchange membrane fuel cells (PEMFCs) have been widely studied as an efficient and environmentally friendly energy conversion technology in recent years. However, the high cost, easy poisoning and complex synthesis methods of noble metal catalysts have hindered their commercialization. Therefore, in this paper, a non-noble metal composite catalyst CuFeCo/C for the oxygen reduction reaction (ORR) was prepared by using a facile liquid-phase reduction method. The ORR kinetic performance of CuFeCo/C was evaluated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and rotating ring-disk electrode (RRDE) tests. The results show that the oxygen reduction peak of CuFeCo/C appears at about 0.64 V, the half-wave potential is about 0.73 V, the limiting current density is about -16.51 A·m, and the Tafel slope is about -0.08. The 10,800 s chronoamperometry test shows that the catalyst has a very good long-term cycle stability. This indicates that the CuFeCo/C composite catalyst has strong stability, good conductivity and ORR catalytic activity under alkaline conditions, which can promote the large-scale commercial application of PEMFCs.
近年来，质子交换膜燃料电池（PEMFCs）作为一种高效且环保的能量转换技术受到了广泛研究。然而，贵金属催化剂的高成本、易中毒以及复杂的合成方法阻碍了它们的商业化。因此，本文采用简便的液相还原法制备了用于氧还原反应（ORR）的非贵金属复合催化剂CuFeCo/C。通过循环伏安法（CV）、线性扫描伏安法（LSV）和旋转环盘电极（RRDE）测试评估了CuFeCo/C的ORR动力学性能。结果表明，CuFeCo/C的氧还原峰出现在约0.64 V处，半波电位约为0.73 V，极限电流密度约为 -16.51 A·m，塔菲尔斜率约为 -0.08。10800 s计时电流法测试表明该催化剂具有非常好的长期循环稳定性。这表明CuFeCo/C复合催化剂在碱性条件下具有较强的稳定性、良好的导电性和ORR催化活性，能够推动PEMFCs的大规模商业应用。
