Advances in Natural Sciences Nanoscience and Nanotechnology,
Journal Year:
2024,
Volume and Issue:
16(1), P. 015004 - 015004
Published: Dec. 30, 2024
Abstract
The
advancement
of
efficient
and
durable
electrocatalysts
is
crucial
for
enhancing
overall
water-splitting
technologies,
particularly
in
harsh
acidic
environments.
In
this
work,
we
treated
carbon
cloth
(CC)
with
a
mixture
HNO
3
H
2
SO
4
to
improve
its
surface
properties
use
it
as
substrate
depositing
Au/Co
O
catalysts.
acid-treated
CC
(TCC)
exhibited
enhanced
hydrophilicity
due
the
introduction
increased
hydroxyl
carboxyl
functional
groups,
leading
higher
loading
catalyst
(3.36
wt%
Co
1.42
Au)
combined
uniform
morphology
compared
untreated
CC.
resulting
/TCC
demonstrated
several
desirable
characteristics,
including
specific
area
40.5
m
g
−1
smaller
charge
transfer
resistance.
When
employed
bifunctional
electrocatalyst
water
splitting,
low
cell
voltage
1.62
V
0.5
M
electrolyte
outstanding
durability,
maintaining
performance
over
24
h
at
current
density
10
mA
cm
−2
without
significant
degradation,
attributed
strong
interfacial
interaction
between
substrate.
wettability,
area,
catalyst-support
arising
from
acid
treatment
were
key
factors
enabling
superior
electrochemical
system.
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(12), P. 1450 - 1450
Published: Nov. 29, 2024
The
pursuit
of
efficient
and
economical
catalysts
for
water
splitting,
a
critical
step
in
hydrogen
production,
has
gained
momentum
with
the
increasing
demand
sustainable
energy.
Among
various
electrocatalysts
developed
to
date,
cobalt
oxide
(Co3O4)
emerged
as
promising
candidate
owing
its
availability,
stability,
catalytic
activity.
However,
intrinsic
limitations,
including
low
activity
poor
electrical
conductivity,
often
hinder
effectiveness
electrocatalytic
splitting.
To
overcome
these
challenges,
substantial
efforts
have
focused
on
enhancing
performance
Co3O4
by
synthesizing
composites
conductive
materials,
transition
metals,
carbon-based
nanomaterials,
metal–organic
frameworks.
This
review
explores
recent
advancements
Co3O4-based
oxygen
evolution
reaction
reaction,
emphasizing
strategies
such
nanostructuring,
doping,
hybridization,
surface
modification
improve
performance.
Additionally,
it
examines
mechanisms
driving
enhanced
stability
while
also
discussing
future
potential
large-scale
water-splitting
applications.
Advances in Natural Sciences Nanoscience and Nanotechnology,
Journal Year:
2024,
Volume and Issue:
16(1), P. 015004 - 015004
Published: Dec. 30, 2024
Abstract
The
advancement
of
efficient
and
durable
electrocatalysts
is
crucial
for
enhancing
overall
water-splitting
technologies,
particularly
in
harsh
acidic
environments.
In
this
work,
we
treated
carbon
cloth
(CC)
with
a
mixture
HNO
3
H
2
SO
4
to
improve
its
surface
properties
use
it
as
substrate
depositing
Au/Co
O
catalysts.
acid-treated
CC
(TCC)
exhibited
enhanced
hydrophilicity
due
the
introduction
increased
hydroxyl
carboxyl
functional
groups,
leading
higher
loading
catalyst
(3.36
wt%
Co
1.42
Au)
combined
uniform
morphology
compared
untreated
CC.
resulting
/TCC
demonstrated
several
desirable
characteristics,
including
specific
area
40.5
m
g
−1
smaller
charge
transfer
resistance.
When
employed
bifunctional
electrocatalyst
water
splitting,
low
cell
voltage
1.62
V
0.5
M
electrolyte
outstanding
durability,
maintaining
performance
over
24
h
at
current
density
10
mA
cm
−2
without
significant
degradation,
attributed
strong
interfacial
interaction
between
substrate.
wettability,
area,
catalyst-support
arising
from
acid
treatment
were
key
factors
enabling
superior
electrochemical
system.
