Carbon quantum dots decorated Ba0.5Sr0.5Co0.8Fe0.2O3-? perovskite nanofibers for boosting oxygen evolution reaction
By Li, Geng; Hou, Shuen; Gui, Liangqi; Feng, Feilong; Zhang, Dingbin; He, Beibei; Zhao, Ling
Published in Applied Catalysis B: Environmental
2019
Abstract
Perovskites are emerging as a new research frontier for oxygen evolution reaction (OER), however, their activity and durability are still far from desirable. Herein, we highlight a facile approach to boosting the perovskite electrocatalysis for OER by the coupling of carbon quantum dots (CQDs). The as-prepared CQDs decorated Ba0.5Sr0.5Co0.8Fe0.2O3-? -perovskite nanofibers (CQDs@BSCF-NFs) catalyst achieves a low overpotential of 0.35 V at 10 mA cm?2, favorably outperforming the individual BSCF-NFs and the commercial IrO2. The CQDs@BSCF-NFs catalyst demonstrates an outstanding current density of 140.8 mA cm?2 at a potential of 1.65 V vs. RHE, which is
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