TY - JOUR
T1 - Cu2O/Reduced Graphene Oxide Nanocomposites for Electrocatalytic Overall Water Splitting
AU - Nallal, Muthuchamy
AU - Park, Kang Hyun
AU - Park, Sungkyun
AU - Kim, Jaeyong
AU - Shenoy, Sulakshana
AU - Chuaicham, Chitiphon
AU - Sasaki, Keiko
AU - Sekar, Karthikeyan
N1 - Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Korea Government (NRF-2020R1I1A3067208, 2021M3I3A1084719, 2022H1D3A3A01077468) and the research fund of Hanyang University (HY- 202100000670034). S. K would like to thank the Royal Society-Newton International Fellowship Alumni follow-on funding support AL\211016 and AL\221024. S. K also thanks to the JSPS Invitational Fellowship (Fellowship ID L22507).
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022
Y1 - 2022
N2 - Hierarchical Cu2O/RGO nanocomposites were synthesized via a sustainable photoredox strategy and utilized as bifunctional electrocatalysts for oxygen and hydrogen evolution reactions (OER and HER) under alkaline conditions. The photoredox Cu2O/RGO electrocatalyst has potential for bifunctional electrocatalytic applications, owing to their small overpotentials (OER: 215 mV and HER: 142 mV), fast kinetics, Tafel slope of 58.2 mV dec-1, high mass performance (613.49 A g-1), high exchange current density (10.9 mA cm-2), long-term stability, and maximum Faradaic efficiency of 97% compared with hierarchical Cu2O, in situ synthesized Cu2O/RGO-1 catalyst, and most electrocatalysts reported thus far. The Cu2O/RGO-2 (+) ∥ Cu2O/RGO-2 (-) cell exhibits excellent durability for overall water splitting compared to the existing benchmark Pt@C (+) ∥ IrO2 (-) cell. This study presents a sustainable approach toward hydrogen fuel generation via overall water splitting and other catalytic and electrocatalytic applications.
AB - Hierarchical Cu2O/RGO nanocomposites were synthesized via a sustainable photoredox strategy and utilized as bifunctional electrocatalysts for oxygen and hydrogen evolution reactions (OER and HER) under alkaline conditions. The photoredox Cu2O/RGO electrocatalyst has potential for bifunctional electrocatalytic applications, owing to their small overpotentials (OER: 215 mV and HER: 142 mV), fast kinetics, Tafel slope of 58.2 mV dec-1, high mass performance (613.49 A g-1), high exchange current density (10.9 mA cm-2), long-term stability, and maximum Faradaic efficiency of 97% compared with hierarchical Cu2O, in situ synthesized Cu2O/RGO-1 catalyst, and most electrocatalysts reported thus far. The Cu2O/RGO-2 (+) ∥ Cu2O/RGO-2 (-) cell exhibits excellent durability for overall water splitting compared to the existing benchmark Pt@C (+) ∥ IrO2 (-) cell. This study presents a sustainable approach toward hydrogen fuel generation via overall water splitting and other catalytic and electrocatalytic applications.
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U2 - 10.1021/acsanm.2c04491
DO - 10.1021/acsanm.2c04491
M3 - Article
AN - SCOPUS:85142156374
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
SN - 2574-0970
ER -
