Hollow CeO2@Co2N Nanosheets Derived from Co‐ZIF‐L for Boosting the Oxygen Evolution Reaction. Issue 9 (6th March 2021)

• Record Type: Journal Article
• Authors: Zhang, Jian; He, Wenhui; Aiyappa, Harshitha Barike; Quast, Thomas; Dieckhöfer, Stefan; Öhl, Denis; Junqueira, João R. C.; Chen, Yen‐Ting; Masa, Justus; Schuhmann, Wolfgang
• Is Part Of: Advanced materials interfaces. Volume 8:Issue 9(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-03-06
• Subjects: cerium oxides -- cobalt nitride -- electronic interactions -- hollow nanosheets -- non‐noble‐metal electrocatalysts -- oxygen evolution reaction; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202100041
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: Rational design of highly active electrocatalysts for the oxygen evolution reaction (OER) is critical to improving overall electrochemical water splitting efficiency. This study suggests hollow CeO2 @Co2 N nanosheets synthesized using Co‐ZIF‐L as a precursor, followed by a hydrothermal reaction and a nitridation process as very attractive OER catalysts. The increased activity is supposed to be due to nitridation and strong electronic interaction between CeO2 and Co2 N that contribute to the formation of active CoOOH phase. The synthesized CeO2 @Co2 N exhibits low overpotentials of 219 and 345 mV at OER current densities of 10 and 100 mA cm –2, respectively, as well as a long‐term durability of 30 h at a comparatively high current density of 100 mA cm −2 . Abstract : Hollow CeO2 @Co2 N nanosheets derived from Co‐ZIF‐L exhibit low overpotentials of 219 and 345 mV at oxygen evolution current densities of 10 and 100 mA cm –2, respectively, as well as a long‐term durability of 30 h at a current density of 100 mA cm −2 .