李鸿鹏,蒋云波,何建云.碳载PtNi合金催化剂的制备、表征及氧还原催化性能研究[J].稀有金属材料与工程,2023,52(4):1345~1351.[Li Hongpeng,Jiang Yunbo,He Jianyun.Preparation, Characterization and Oxygen Reduction Reaction Catalytic Performance of Carbon Loaded PtNi Alloy Catalysts[J].Rare Metal Materials and Engineering,2023,52(4):1345~1351.]
[doi] |
| 碳载PtNi合金催化剂的制备、表征及氧还原催化性能研究 |
| 投稿时间：2022-04-06 修订日期：2022-05-20 |
| 中文关键词: 液相合成法 PtNi合金 催化剂 氧还原反应 |
| 基金项目:国家自然科学基金(项目号：51864022)；昆明市高层次人才引进创新技术进步项目(项目号：13020163)；云南贵金属集团R D应用研究(2020040603) |
| 中文摘要: |
| 以乙酰丙酮铂(Pt(acac)2)、乙酰丙酮镍(Ni(acac)2)为前驱体,三正辛基氧膦(TOPO)为表面修饰剂,油胺(OAm)为还原剂,N,N-二甲基甲酰胺(DMF)为助剂,超导碳科琴黑ECP为载体,采用液相合成法制备了碳载PtNi合金纳米催化剂(Pt2.7Ni/C)。通过TEM对其形貌进行表征,ICP-AES进行定性和定量分析,XRD对其结构进行表征,并进行电化学阴极氧还原催化性能研究。研究表明：所制备的Pt2.7Ni/C纳米催化剂粒径分布在3~11 nm之间,平均粒径为6.25 nm；在酸性条件下,当电位在0.9 V(vs. RHE)时,Pt2.7Ni/C纳米催化剂的质量比活性为796.08 mA mg-1Pt,为商业Pt/C(JM)催化剂的4.0倍,面积比活性为3.60 mA cm-2,为商业Pt/C(JM)催化剂的11.3倍。同时在经过5000和10000圈的加速耐久性实验后,Pt2.7Ni/C纳米催化剂催化活性依旧高于商用Pt/C(JM)催化剂,表现出优异的氧还原催化性能。 |
| Preparation, Characterization and Oxygen Reduction Reaction Catalytic Performance of Carbon Loaded PtNi Alloy Catalysts |
| 英文关键词:Liquid-phase synthesis PtNi alloy Electrocatalyst Oxygen reduction reaction |
| 英文摘要: |
| Carbon loaded PtNi alloy nanocatalysts (Pt2.7Ni/C) were prepared by liquid phase synthesis using platinum acetylacetonate (Pt(acac)2) and nickel acetylacetonate (Ni(acac)2) as precursors, tri-n-octylphosphine oxide (TOPO) as surface modifier, oleylamine (OAm) as reducing agent, N,N-dimethylformamide (DMF) as auxiliary, and superconducting carbon kochen black ECP as carrier. The morphology of Pt2.7Ni/C was characterized by TEM, the qualitative and quantitative analysis by ICP-AES, the structural characterization by XRD, and the electrochemical cathodic oxygen reduction catalytic performance was further investigated. It was shown that the particle size of the prepared Pt2.7Ni/C nanocatalysts were in range of 3-11 nm with an average size of ~6.25 nm. The mass activity of Pt2.7Ni/C nanocatalysts was 796.08 mA.mg-1Pt (4.0 times as effective as the commercial Pt/C(JM) catalysts) and the specific activity was 3.60 mA.cm2(11.3 times as effective as the commercial Pt/C(JM) catalysts) under acidic conditions when the potential was at 0.9 V (vs. RHE). The catalytic activity of the Pt2.7Ni/C nanocatalysts remained higher than that of the commercial Pt/C(JM) catalysts after 5000 and 10000 turns of accelerated endurance experiments, showing excellent oxygen reduction catalytic performance of the Pt2.7Ni/C nanocatalysts. |
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