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Frontiers of Chemical Science and Engineering >> 2022, Volume 16, Issue 3 doi: 10.1007/s11705-021-2062-x

Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Received: 28 Dec 202 Revised: 21 Mar 202 Accepted: 24 Feb 202 Available online: 2022-03-15

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Abstract

To realize renewable energy conversion, it is important to develop low-cost and high-efficiency electrocatalyst for oxygen evolution reaction. In this communication, a novel bijunction CoS/CeO2 electrocatalyst grown on carbon cloth is prepared by the interface engineering. The interface engineering of CoS and CeO2 facilitates a rapid charge transfer from CeO2 to CoS. Such an electrocatalyst exhibits outstanding electrocatalytic activity with a low overpotential of 311 mV at 10 mA∙cm−2 and low Tafel slope of 76.2 mV∙dec–1, and is superior to that of CoS (372 mV) and CeO2 (530 mV) counterparts. And it has long-term durability under alkaline media.

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