| 초록 |
The preparation of multinary metal chalcogenide nanocrystals, particularly those derived from first-row transition metal elements, is of considerable interest since these materials is not only cheap and abundant, but also exhibit improved electrocatalytic performance that would be as comparable as does IrO2 or RuO2. Herein, we develop a facile synthesis of tertiary metal (Ni and Fe)-based selenide (NixFe1-xSe2) nanocrystals with a homogeneous element distribution as well as uniform size and shape. Specifically, NixFe1-xSe2 nanocrystals are readily converted from the as-prepared Ni-Fe LDH with unique flower-like morphologies through a solution-based approach. The prepared NixFe1-xSe2 nanocrystals can be deposited on a variety of conductive supports, such as carbon fiber or nickel foil, to improve the catalytic performance and durability. Importantly, these materials can be rationally implemented as dual-functional catalysts for overall water-splitting, including HER and OER. |
