Invited
Core-shell nanoparticles for electrochemical energy conversion and storage

The growing needs for complex functionality of nanoparticles has stemmed the development of original synthesis pathways towards core-shell structure. The colloidal syntheses are extremely well adapted to the synthesis of core-shell nanostructures.¹ During the past decade, the quest for sustainability in electrochemical energy conversion and storage has motivated the investigation of electrochemically active materials with a great control on the electrified interface. Therefore, the core-shell approach has naturally been forecast as an excellent solution to chemically modified the electrified interface.

In most of the electrochemical devices, the interface between a solid and an electrolyte should promote a chemical reaction with high efficiency, selectivity and chemical stability. Herein, the synthesis of core-shell nanoparticles promotes the electrocatalysis of several important reactions for sustainability: water splitting, fuel electrochemical conversion and chemical storage. The core-shell nanoparticles display a high activity and stability towards hydrogen oxidation/evolution reaction^2,3 and oxygen evolution/oxidation reaction^4,5 in acidic or alkaline solutions, even in high concentration of corrosive species.⁶

Bibliography

[1] Hollow Octahedral and Cuboctahedral Nanocrystals of Ternary Pt-Ni-Au Alloys Meital Shviro, Shlomi Polani, DZ Nanoscale, 2015, 7, 13521

[2] Palladium/Nickel Bifunctional Electrocatalyst for Hydrogen Oxidation Reaction in Alkaline Membrane Fuel Cell Masha Alesker, Miles Page, Meital Shviro, Gregory Gershinsky, Yair Paska, Dario Dekel, DZ Journal of Power Sources 2016, 304, 332-339

[3] Bifunctional Electrocatalysis on Pd-Ni Core–Shell Nanoparticles for Hydrogen Oxidation Reaction in Alkaline Medium Meital Shviro, Shlomi Polani, Rafal E. Dunin-Borkowski, DZ Adv. Mater. Interfaces 2018, 1701666

[4] Leveraging Commercial Silver Inks as Oxidation Reduction Reaction Catalysts in Alkaline Medium Shlomi Polani, Naftali Kanovsky, DZ ACS Appl. Nano Mater. 2018, 1, 3075−3079

[5] Direct Chemical Synthesis of Lithium Sub-Stochiometric Olivine Li_0.7Co_0.75Fe_0.25PO₄ coated with Reduced Graphene Oxide as Oxygen Evolution Reaction Electrocatalyst Yelena Gershinsky, DZ ACS Catalysis, 2018, 8, 8715–8725

[6] From the Sea to Hydrobromic Acid: Polydopamine Layer As Corrosion Protective Layer on Platinum Electrocatalyst Gregory Gershinsky, Pilkhaz Nanikashvili, Ran Elazari, DZ ACS Appl. Energy Mater., 2018, 1 (9), pp 4678–4685