Facile Aqueous Phase Synthesis of Carbon Supported B-doped Pt3Ni Nanocatalyst for Efficient Oxygen Reduction Reaction

作者：Dong, Yu; Zhou, Ya-Wei; Wang, Meng-Zhi; Zheng, Shao-Liang; Jiang, Kun^*; Cai, Wen-Bin^*

来源：Electrochimica Acta, 2017, 246: 242-250.

DOI：10.1016/j.electacta.2017.06.031

• Oxygen reduction reaction
• Platinum-nickel nanoalloy
• Boron-doping
• Carbon supported catalysts
• Dimethylamine borane

Boron-doped platinum-nickel nanoalloy supported on carbon black (Pt3Ni-B/C) is facilely synthesized through an aqueous phase process under mild conditions with dimethylamine borane as the reducing agent. The Pt3Ni-B/C catalyst exhibits an activity toward oxygen reduction reaction (ORR) in acid media at 0.90 V vs. RHE with a mass activity 3 and 1.7 times, and a specific activity 6 and 1.4 times as high as those for a commercial Pt/C and a Pt3Ni/C synthesized using NaBH4 reductant, respectively. After 10,000 cycles of accelerated durability test the Pt3Ni-B/C demonstrates a significantly improved ORR durability in comparison to its counterparts with only 10 mV decay for its half-wave potential. The higher performance of the Pt3Ni-B/C with respect to that of the Pt3Ni/C can be ascribed to well-dispersed and relatively small nanoalloy particles, as well as slightly intensified adsorption strength toward Ocontaining species and structural resistance to potential cycling with boron doping.

• 出版日期2017-8-20
• 单位复旦大学