Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells

被引：57
|
作者：
Khan, Inayat Ali [1 ,2 ]
Qian, Yuhong [2 ]
Badshah, Amin [1 ]
Zhao, Dan [2 ]
Nadeem, Muhammad Arif [1 ]
机构：
[1] Quaid I Azam Univ, Dept Chem, Catalysis & Nanomat Lab 27, Islamabad 45320, Pakistan
[2] Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore
来源：
ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 32期
关键词：
fuel cells; bimetallic nanoparticles; energy storage; methanol oxidation; durability; OXYGEN REDUCTION REACTION; CORE-SHELL NANOPARTICLES; ELECTROCATALYSTS; CATALYST; ELECTROOXIDATION; DURABILITY; OXIDATION; SUPPORT; STABILITY; EXCHANGE;
D O I：
10.1021/acsami.6b06068
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：20793 / 20801
页数：9
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