Doping Copper Ions into an Fe/N/C Composite Promotes Catalyst Performance for the Oxygen Reduction Reaction

作者：Yu, Guo-Qiang; Wei, Ping-Jie^*; Wang, Fei-Fei; Liu, Jin-Gang^*

来源：ChemElectroChem, 2017, 4(6): 1509-1515.

DOI：10.1002/celc.201600904

• Iron
• copper co-doping
• carbon nanomaterials
• electrocatalysis
• oxygen reduction reaction
• fuel cells

Developing new non-precious-metal catalysts for the cathodic oxygen reduction reaction (ORR) in low-temperature fuel cells is highly desirable for replacing Pt-based noble-metal electrocatalysts. Herein, we report a two-step method to prepare Fe, Cu, and N-doped reduced graphene oxide/carbon nanotube (rGO/CNT) composites through the low-temperature hydrothermal treatment of iron-porphyrin-modified graphene and copper-chloride-loaded CNTs followed by high-temperature calcination, for use as efficient and stable electrocatalysts for the ORR. The optimized Fe/Cu-N-rGO/CNT catalyst exhibited higher ORR activity and superior stability, as compared to a commercial Pt/C catalyst in 0.1 mol.L-1 KOH solutions, and also demonstrates good stability in acidic electrolytes. These results suggest that additional doping of Cu ions into the Fe/N/C catalyst significantly promotes the catalyst ORR performance.

• 出版日期2017-6
• 单位华东理工大学