Authors:
Saim Saher,Kamran Alam,Affaq Qamar,Abid Ullah,Waqas A. Imtiaz,DOI NO:
https://doi.org/10.26782/jmcms.2019.02.00024Keywords:
Ni ZeoliticImidazolateFramework(Ni/ZIF),Ni nanotubes,Oxygen Reduction Reaction,Linear Sweep Voltammetry,Abstract
The oxygen reduction reaction (ORR) in proton exchange membrane fuel cell (PEMFC) having sluggish kinetics at cathode side requires highly active and low cost catalyst. Conventionally, platinum (Pt) is considered to be the most feasible and active catalyst for ORR at cathode, however,it’s far expensive to meet the demand for commercialization. Herein novel non platinum group metal (N-PGM) nickel (Ni) nanotubes were prepared by using solvothermal method using transition metal precursor forming Ni ZeoliticImidazolateFramework (Ni/ZIF). Ni nanotubes were obtained after carbonizing Ni/ZIF at 850oC under inert nitrogen atmosphere. The morphology and motif were extensively studied by conducting XRD and SEM. The electro-catalytic performance of Pt/C catalyst, pristine Ni/ZIF and Ni nanotubes were investigated by Linear Sweep Voltammetry (LSV) performed with Rotating Disk Electrode (RDE) in alkaline medium. The Ni/ZIF shows a current density of -1.4 mA/cm2and Ni nanotubes depicts current density of -2.7mA.cm-2 and an over potential of -0.27V Vs Saturated Calomel Electrode (SCE). RDE Results were obtained at 400, 800, 1200 and 1600 rpm in 0.1M KOH solution. The evaluation shows that Ni nanotubes own extraordinary electro-catalytic behavior towards ORR activity and Ni nanotubes has potential to be used for PEMFC application.Refference:
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Saim Saher, Kamran Alam, Affaq Qamar, Abid Ullah, Waqas A. Imtiaz View Download