ZIF derived PtNiCo/NC cathode catalyst for proton exchange membrane fuel cell

被引：87
|
作者：
Hanif, Saadia [1 ,2 ]
Shi, Xuan [2 ]
Iqbal, Naseem [1 ]
Noor, Tayyaba [3 ]
Anwar, Rehan [1 ,2 ]
Kannan, A. M. [2 ]
机构：
[1] Natl Univ Sci & Technol, USPCAS E, Islamabad 44000, Pakistan
[2] Arizona State Univ, Ira A Fulton Sch Engn, Polytech Sch, Fuel Cell Lab, Mesa, AZ 85212 USA
[3] Natl Univ Sci & Technol, SCME, Islamabad 44000, Pakistan
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2019年 / 258卷
关键词：
ZIF-67; PEMFC; ORR; Electrocatalyst; PtNiCo/NC; OXYGEN REDUCTION REACTION; CARBON; NITROGEN; POLYMER; ELECTROCATALYSTS; PERFORMANCE; CO; NANOSTRUCTURES; NANOMATERIALS; XPS;
D O I：
10.1016/j.apcatb.2019.117947
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
High performance cathode catalysts with minimum platinum amount for the electrocatalyzed oxygen reduction reaction (ORR) in PEMFCs remain as a significant challenge for commercial application. Zeolitic Imidazolate Framework (ZIF) based catalyst can provide void 3D framework of N-doped nano-porous carbon for promising ORR activity. Here we report a bimetallic pyrolyzed NiCo-ZIF supported fine Pt/Pt alloy electrocatalyst for ORR. After pyrolysis, nano-porous carbon is obtained with well dispersed Pt/Pt alloy nanoparticles ((similar to) 3 nm). This catalyst shows superior performance and stability in acidic medium against the commercial catalyst comprising of Pt/C. In a single cell PEMFC, high peak power density value of 1067 mW. cm(-2) is attained at 70 degrees C by using low platinum amount of 0.12 mg cm(-2) on cathode. The enhanced activity and durability is credited to the synergistic impact of N-doped nano-porous carbon originated from NiCo-ZIF and the defect rich carbon support to anchor Pt/Pt alloy nanoparticles.
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页数：8
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