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首页> 外文期刊>ACS applied materials & interfaces >Gram-Scale Synthesis of Well-Dispersed Shape-Controlled Pt-Ni/C as High-Performance Catalysts for the Oxygen Reduction Reaction
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Gram-Scale Synthesis of Well-Dispersed Shape-Controlled Pt-Ni/C as High-Performance Catalysts for the Oxygen Reduction Reaction

机译：克拉尺寸合成井分散的形状控制的PT-Ni / C作为氧还原反应的高性能催化剂

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摘要

To further promote the development and industrialization of the fuel cell, it is urgent to exploit the high-performance catalysts prepared by simple and effective methods. Here, an effective and simple one-pot synthesis of well-dispersed Pt-Ni/C catalysts is reported. The shape controlled 10 nm-sized Pt-Ni catalysts are successfully synthesized. Among them, the Pt-Ni/C-8h with a concave structure shows the best performance in the RDE test. Its concave structure makes it possess plentiful active sites and a higher platinum utilization, which help the catalytic performance. The mass activity (MA) and specific activity (SA) are nearly 13.8 and 12.5 times higher than those of commercial Pt/C catalysts (JM). After the accelerated durability test, the half-wave potential of Pt-Ni/C concave octahedron catalyst only shifted 9 mV and the mass activity could maintain 72.5%. In single cell tests, the MEA prepared by Pt-Ni/C-12h exhibits the best performance, which is 1.2 times that sprayed by Pt/C. It indicates that these nanoparticles can be promising catalysts to be applied to proton exchange membrane fuel cells (PEMFC).
机译：为了进一步促进燃料电池的开发和产业化，迫切需要利用简单有效方法制备的高性能催化剂。在此，报道了一种有效和简单的单壶合成井分散的Pt-Ni / C催化剂。成型控制10nm大小的Pt-Ni催化剂是成功合成的。其中，具有凹形结构的Pt-Ni / C-8H显示了RDE测试中的最佳性能。其凹面结构使其具有丰富的活性位点和更高的铂利用，这有助于催化性能。比商业Pt / C催化剂（JM）高，大致活性（MA）和特异性活性（SA）近于13.8％和12.5倍。在加速耐久性测试之后，Pt-Ni / C凹入八元型催化剂的半波电位仅移位9mV，质量活性可保持72.5％。在单细胞试验中，PT-Ni / C-12H制备的MEA表现出最佳性能，其是通过PT / C喷射的1.2倍。表明这些纳米颗粒可以是待应用于质子交换膜燃料电池（PEMFC）的承诺催化剂。

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