Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells
Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells
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DOI：
10.1021/acsami.6b06068
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发表时间：
2016-08-17
影响因子：
9.5
通讯作者：
Nadeem, Muhammad Arif
中科院分区：
文献类型：
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作者：
Khan, Inayat Ali;Qian, Yuhong;Nadeem, Muhammad Arif
通过控制Pt粒子的组成和形貌来提高Pt粒子的耐久性对于燃料电池的商业化是极其重要的。我们以不同的金属摩尔比在高表面积碳上存款Pt-Cu合金纳米颗粒，并优化条件以获得所需的材料。新型的Pt-Cu/PC-950（15：15%）电催化剂对氧还原反应和甲醇氧化反应均具有优异的电催化活性。对于ORR记录了0.043 mA/μ g（Pt）（基于Pt质量）的高质量活性。当与负载在PC-950或商业碳上的20重量% Pt相比时，注意到该电催化剂的突出寿命。高比表面积的碳载体提供增强的活性，并防止纳米颗粒的团聚、迁移和溶解，如TEM分析所示。
Boosting the durability of Pt riatioparticles by controlling the composition and morphology is extremely important for fuel cells commercialization. We deposit the Pt-Cu alloy nanoparticles over high surface area carbon in different metallic molar ratios and optimize the conditions to achieve desired material. The novel bimetallic electro-catalyst {Pt-Cu/PC-950 (15:15%)} offers exceptional electrocatalytie activity when tested for both oxygen reduction reaction and methanol oxidation reactions. A high mass activity of 0.043 mA/mu g(Pt) (based on Pt mass) is recorded for ORR An outstanding longevity of this electro-catalyst is noticed when compared to 20 wt Pt loaded either on PC-950 or commercial carbon. The high surface area carbon support offers enhanced activity and pievepts the nanoparticles from agglomeration, migration, arid disSolution as evident by TEM analysis.