Clean synthesis of biocarbon‑supported Ni@Pd core–shell particles via hydrothermal method for direct ethanol fuel cell anode application

BIOMASA

ETANOL

BIOMASA-RESIDUOS

SINTESIS HIDROTERMICA

BIBLIOGRAFIA NACIONAL QUIMICA

2020

Direct ethanol fuel cells (DEFCs) are devices for clean and sustainable energy production, where the generation of electrical energy occurs as a result of the anodic ethanol oxidation reaction (EOR). One of the main challenges of these devices is the development of cost-effective and sustainable anodic catalysts, minimizing the use of noble metals such as Pd. In this sense, biomass-derived carbon-supported core–shell nanoparticles of PdNi-based electrocatalyst are of great interest for EOR and its application in DEFCs. The purpose of this work was to demonstrate the possibility of synthesizing a core–shell Ni@Pd electrocatalysts via hydrothermal method, in a fast, simple and environmental friendly way. A biomass hydrothermal liquefaction method using nickel and palladium salts was used to synthesize a biocarbon-supported nickel/palladium core–shell electrocatalyst (Ni@Pd/aHC). The electrocatalyst was morphological and chemical characterized in order to confirm the core–shell particle formation. The electrochemical characterization showed that the Ni@Pd/aHC sample has good electrocatalytic behaviour and good stability over time. The EOR mechanism on the sample and their influence in the faradaic efficiency of a cell were also studied by spectroelectrochemical analysis.

Clean Technologies and Environmental Policy, V.22, No. 1, 2020. -- p.259-268

Springer

2020

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