TY - JOUR
T1 - Rational Construction of a Triple-Phase Reaction Zone Using CuO-Based Heterostructure Nanoarrays for Enhanced Water Oxidation Reaction
AU - Sun, Zhongti
AU - Zhi, Chuang
AU - Sun, Yingjie
AU - Bao, Anyang
AU - Yang, Wenqiang
AU - Yang, Juan
AU - Hu, Jinlian
AU - Liu, Guoqiang
N1 - Publisher Copyright:
© 2023 American Chemical Society
PY - 2023
Y1 - 2023
N2 - The development of high-efficiency
oxygen evolution reaction (OER) electrocatalysts for the production and
conversion of clean energy is paramount yet also full of challenges.
Herein, we proposed a simple and universal method to precisely fabricate
the hierarchically structured CuO/TMOs loaded on Cu foil (CuO/TMOs/CF)
(TMO represents Mn3O4, NiO, CoO, and CuO) nanorod-array electrodes as a highly active and stable OER electrocatalyst, employing Cu(OH)2/CF as a self-sacrificing template by the subsequent H2O2-induced chemical deposition (HiCD) and pyrolysis process. Taking CuO/Mn3O4/CF
as an example, we systematically investigated its structure–performance
relationship via experimental and theoretical explorations. The
enhanced OER activity can be ascribed to the rational design of the
nanoarray with multiple synergistic effects of abundant active sites,
excellent electronic conductivity of the metallic Cu foil substrate,
strong interface charge transfer, and
quasi-superhydrophilic/superaerophobic property. Consequently, the
optimal CuO/Mn3O4/CF presents an overpotential of 293 mV to achieve a current density of 20 mA cm–2 in 1.0 M KOH media, comparable to that of commercial RuO2
(282 mV), delivering excellent durability by the electrolysis of water
at a potential of around 1.60 V [vs reversible hydrogen electrode (RHE)]
without evident degeneration. This work might offer a feasible scheme
for developing a hybrid nanoarray OER electrocatalyst via regulating
electron transportation and mass transfer.
AB - The development of high-efficiency
oxygen evolution reaction (OER) electrocatalysts for the production and
conversion of clean energy is paramount yet also full of challenges.
Herein, we proposed a simple and universal method to precisely fabricate
the hierarchically structured CuO/TMOs loaded on Cu foil (CuO/TMOs/CF)
(TMO represents Mn3O4, NiO, CoO, and CuO) nanorod-array electrodes as a highly active and stable OER electrocatalyst, employing Cu(OH)2/CF as a self-sacrificing template by the subsequent H2O2-induced chemical deposition (HiCD) and pyrolysis process. Taking CuO/Mn3O4/CF
as an example, we systematically investigated its structure–performance
relationship via experimental and theoretical explorations. The
enhanced OER activity can be ascribed to the rational design of the
nanoarray with multiple synergistic effects of abundant active sites,
excellent electronic conductivity of the metallic Cu foil substrate,
strong interface charge transfer, and
quasi-superhydrophilic/superaerophobic property. Consequently, the
optimal CuO/Mn3O4/CF presents an overpotential of 293 mV to achieve a current density of 20 mA cm–2 in 1.0 M KOH media, comparable to that of commercial RuO2
(282 mV), delivering excellent durability by the electrolysis of water
at a potential of around 1.60 V [vs reversible hydrogen electrode (RHE)]
without evident degeneration. This work might offer a feasible scheme
for developing a hybrid nanoarray OER electrocatalyst via regulating
electron transportation and mass transfer.
U2 - 10.1021/acs.inorgchem.3c03594
DO - 10.1021/acs.inorgchem.3c03594
M3 - Journal article
C2 - 38041798
AN - SCOPUS:85179612347
SN - 0020-1669
VL - 62
SP - 21461
EP - 21469
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 51
ER -