화학공학소재연구정보센터
Journal of Colloid and Interface Science, Vol.560, 34-39, 2020
S doped NiCo2O4 nanosheet arrays by Ar plasma: An efficient and bifunctional electrode for overall water splitting
Transition metal oxides show great potential as electrocatalysts, owing to the low cost and rich chemical states. However, the limited surface areas, low intrinsic activity and poor hydrogen evolution reaction (HER) activity greatly restrict the application for overall water splitting. Herein, we have constructed S doped NiCo2O4 nanosheet arrays by Ar plasma (Ar-NiCo2O4 vertical bar S) to enhance active sites and boost catalytic kinetics. Consequently, the Ar-NiCo2O4 vertical bar S shows the improved performances for HER and oxygen evolution reaction (OER). Further, as bifunctional electrocatalysts, Ar-NiCo2O4 vertical bar S exhibit a voltage of 1.63 Vat 10 mA cm(-2), as well as good stability. (C) 2019 Elsevier Inc. All rights reserved.