Formic acid and methanol electro-oxidation and counter hydrogen production using nano high entropy catalyst

Katiyar, NK and Nellaiappan, S and Kumar, R and Malviya, KD and Pradeep, KG and Singh, AK and Sharma, SM and Tiwary, CS and Biswas, K (2020) Formic acid and methanol electro-oxidation and counter hydrogen production using nano high entropy catalyst. In: Materials Today Energy, 16 .

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Abstract

Renewable harvesting of clean energy using the benefits of multi-metallic catalytic materials of high entropy alloy (HEA, equimolar Cu�Ag�Au�Pt�Pd) from formic acid with minimum energy input has been achieved in the present investigation. The synergistic effect of pristine elements in the multi-metallic HEA drives the electro-oxidation reaction towards non-carbonaceous pathway. The atomistic based simulations based on DFT rationalize the distinct lowering of the d-band center for the individual atoms in the HEA as compared to the pristine counterparts. Further this catalytic activity of the HEA has also been extended to methanol electro-oxidation to show the unique capability of the novel catalyst. The nanostructured HEA, prepared using a combination of casting and cryomilling techniques can further be utilized as the fuel cell anode in the direct formic acid/methanol fuel cells (DFFE).

Item Type:	Journal Article
Publication:	Materials Today Energy
Publisher:	ELSEVIER SCI LTD
Additional Information:	The copyright of this article belongs to ELSEVIER SCI LTD
Keywords:	Catalyst activity; Electrooxidation; Entropy; Formic acid; Formic acid fuel cells (FAFC); High-entropy alloys; Hydrogen production; Methanol; Microscopic examination; Nanocatalysts; Oxidation, Catalytic materials; Electro-oxidation reaction; Fuel cell anodes; Hydrogen Energy; Methanol electrooxidation; Nano-structured; Novel catalysts; Synergistic effect, Catalytic oxidation
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	26 Jun 2020 06:32
Last Modified:	26 Jun 2020 06:32
URI:	http://eprints.iisc.ac.in/id/eprint/64852

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