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Highly Porous Carbon Derived from MOF-5 as a Support of ORR Electrocatalysts for Fuel Cells by Inayat Ali Khan; Yuhong Qian; Amin Badshah; Muhammad Arif Nadeem; Dan Zhao is a Engineering article available to read on EtoBox.

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The development of highly competent electrocatalysts for the sluggish oxygen reduction reaction (ORR) at cathodes of proton-exchange membrane fuel cells (PEMFCs) is extremely important for their long-term operation and wide applications. Herein, we present highly efficient ORR electrocatalysts based on Pt/Ni bimetallic nanoparticles dispersed on highly porous carbon obtained via pyrolysis of a metal-organic framework MOF-5. In comparison to the commercial Pt/C (20%), the electrocatalyst Pt-Ni/PC 950 (15:15%) in this study exhibits a pronounced positive shift of 90 mV in Eonset. In addition, it also demonstrates excellent long-term stability and durability during the 500-cycle continue-oxygen-supply (COS) accelerating durability tests (ADTs). The significantly improved activity and stability of Pt-Ni/PC 950 (15:15%) can be attributed to the Pt electron interaction with Ni and carbon support as has been proved in X-ray and microscopic analysis.

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Author

Inayat Ali Khan; Yuhong Qian; Amin Badshah; Muhammad Arif Nadeem; Dan Zhao

Published

2016

Language

EN

Field

Engineering (Physical Sciences)