Propitious Dendritic Cu2 O-Pt Nanostructured Anodes for Direct Formic Acid Fuel Cells

ACS Applied Materials & Interfaces
Gumaa A El-NagarBahgat E El-Anadouli

Abstract

This study introduces a novel competent dendritic copper oxide-platinum nanocatalyst (nano-Cu2O-Pt) immobilized onto a glassy carbon (GC) substrate for formic acid (FA) electro-oxidation (FAO); the prime reaction in the anodic compartment of direct formic acid fuel cells (DFAFCs). Interestingly, the proposed catalyst exhibited an outstanding improvement for FAO compared to the traditional platinum nanoparticles (nano-Pt) modified GC (nano-Pt/GC) catalyst. This was evaluated from steering the reaction mechanism toward the desired direct route producing carbon dioxide (CO2); consistently with mitigating the other undesired indirect pathway producing carbon monoxide (CO); the potential poison deteriorating the catalytic activity of typical Pt-based catalysts. Moreover, the developed catalyst showed a reasonable long-term catalytic stability along with a significant lowering in onset potential of direct FAO that ultimately reduces the polarization and amplifies the fuel cell's voltage. The observed catalytic enhancement was believed to originate bifunctionally; while nano-Pt represented the base for the FA adsorption, nanostructured copper oxide (nano-Cu2O) behaved as a catalytic mediator facilitating the charge transfer during FAO...Continue Reading

References

Apr 2, 2009·The Journal of Chemical Physics·Sergey StolbovTalat S Rahman
Mar 23, 2011·Nature Materials·Georgi N VayssilovJörg Libuda
Apr 17, 2012·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·You XuBin Zhang
Jul 3, 2013·Journal of the American Chemical Society·Jiyong JooMasatoshi Osawa
Jul 15, 2015·Journal of Molecular Modeling·Bing-Xing YangYong Luo

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Citations

Jul 31, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xiaolong ZhangYongjun Zhang
Jan 30, 2021·Angewandte Chemie·Yan-Xin DuanQing Jiang
Jun 1, 2019·ACS Applied Materials & Interfaces·Gumaa A El-NagarChristina Roth

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