TY - JOUR
T1 - Highly Desirable Platform for Efficient Hydrogen Generation
T2 - Electrodeposited CoP on N-Doped Vertical Graphene
AU - Roy, Sanjib Baran
AU - Truong, Linh
AU - Jeon, Jae Ho
AU - Lee, Sunghun
AU - Jerng, Sahng Kyoon
AU - Jung, Euigeol
AU - Chan Jun, Seong
AU - Chun, Seung Hyun
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021
Y1 - 2021
N2 - Vertically oriented graphene nanohills (VGNHs) have been used to boost the hydrogen evolution reaction (HER) activities of various catalysts. To further enhance the HER efficiency, a chemical modification was applied to VGNHs, and a significant improvement was observed in this work. Specifically, the catalytic performances of electrodeposited CoP on as-grown VGNHs (CoP@VGNHs) and on HNO3-treated VGNHs (CoP@N-VGNHs) were compared. The HER performances of the CoP@N-VGNH hybrid were even superior to those of noble metals, manifesting low overpotentials (η10 = 30 mV in acid and η10 = 87 mV in alkali), fast electron transfer, and durability in both acidic and alkaline electrolytes. This emphasizes the potential of physically and chemically modified graphene in the realm of water electrolysis.
AB - Vertically oriented graphene nanohills (VGNHs) have been used to boost the hydrogen evolution reaction (HER) activities of various catalysts. To further enhance the HER efficiency, a chemical modification was applied to VGNHs, and a significant improvement was observed in this work. Specifically, the catalytic performances of electrodeposited CoP on as-grown VGNHs (CoP@VGNHs) and on HNO3-treated VGNHs (CoP@N-VGNHs) were compared. The HER performances of the CoP@N-VGNH hybrid were even superior to those of noble metals, manifesting low overpotentials (η10 = 30 mV in acid and η10 = 87 mV in alkali), fast electron transfer, and durability in both acidic and alkaline electrolytes. This emphasizes the potential of physically and chemically modified graphene in the realm of water electrolysis.
KW - cobalt phosphide (CoP)
KW - doping
KW - hydrogen evaluation reaction (HER)
KW - overpotential
KW - vertical graphene nanohills (VGNHs)
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U2 - 10.1021/acsaem.1c00551
DO - 10.1021/acsaem.1c00551
M3 - Article
AN - SCOPUS:85110115596
SN - 2574-0962
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
ER -