Metal Chalcogenide Nanofilms: Platforms for Mechanistic Studies of Electrocatalysis

摘要: The systematic development of improved electrocatalysts requires strategies for preparing candidate materials as well-defined thin-film electrodes that are amenable to straightforward characterization reaction mechanism and catalyst specific activity. While numerous thin film preparation methods established transition metals metal alloys, few exist chalcogenides, despite growing recognition their role potent electrocatalysts. Herein we show electrochemical atomic layer deposition (E-ALD) is a powerful tool accessing chalcogenide electrocatalysts, by synthesizing, the first time, crystalline conformal films Co9S8, promising earth-abundant oxygen reduction catalyst, with tunable nanoscale thickness. as-prepared nanofilms display relatively high activity provide robust platform detailed mechanistic investigations. Initial studies reveal on...