Platinum and PtNi Nanoparticle-Supported Multiwalled Carbon Nanotube Electrocatalysts Prepared by One-Pot Pyrolytic Synthesis with an Ionic Liquid
Platinum and PtNi Nanoparticle-Supported Multiwalled Carbon Nanotube Electrocatalysts Prepared by One-Pot Pyrolytic Synthesis with an Ionic Liquid
复制标题
DOI：
10.1021/acsaem.9b00561
复制
发表时间：
2019-06
影响因子：
6.4
通讯作者：
Yueh-Yun Yao;Reiko Izumi;T. Tsuda;Y. Oshima;A. Imanishi;Naoko Oda;S. Kuwabata
中科院分区：
文献类型：
--
作者：
Yueh-Yun Yao;Reiko Izumi;T. Tsuda;Y. Oshima;A. Imanishi;Naoko Oda;S. Kuwabata
以N，N，N-三甲基-N-丙基铵双（三氟甲磺酰基）酰胺离子液体（IL）为前驱体，Pt（acac）2、Ni[Tf 2N]2和Ni（acac）2为载体，采用一锅法制备了Pt和PtNi合金纳米粒子负载的多壁碳纳米管（Pt/MWCNTs和PtNi/MWCNTs）.在573 K下加热离子液体溶液即可制备出复合材料。所得材料显示出对氧还原反应有利的催化活性和优于典型的市售电催化剂的耐久性上级。PtNi/MWCNTs的催化活性取决于PtNi合金纳米颗粒的Ni含量。PtNi/MWCNTs的质量活性比典型的商业电催化剂高1.4倍。作为Ni含量的函数的质量活度的图给出了一个顶点在约100 ° C处的山形曲线。25原子百分比的镍。这种一锅法可以很容易地控制PtNi/MW催化剂的催化性能。
Pt and PtNi alloy nanoparticle-supported multiwalled carbon nanotubes (Pt/MWCNTs and PtNi/MWCNTs) are prepared by a one-pot pyrolysis method with the N,N,N-trimethyl-N-propylammonium bis(trifluoromethanesulfonyl)amide ionic liquid (IL) containing platinum and nickel precursors, Pt(acac)2, Ni[Tf2N]2, and Ni(acac)2, with suspended MWCNTs. The composite materials can be prepared by simply heating the IL solution at 573 K. The resulting materials show favorable catalytic activity toward the oxygen reduction reaction and durability superior to those of typical commercially available electrocatalysts. The catalytic activity of the PtNi/MWCNTs depends on the Ni content of the PtNi alloy nanoparticles. One of the PtNi/MWCNTs shows 1.4 times higher mass activity than a typical commercial electrocatalyst. A plot of the mass activity as a function of the Ni content gives a mountain-shaped curve with a vertex at ca. 25 atomic percent Ni. This one-pot process can readily control the catalytic properties of the PtNi/MW...