Inorganic Chemistry,
Год журнала:
2021,
Номер
60(16), С. 12355 - 12366
Опубликована: Июль 29, 2021
Altering
the
morphology
of
electrochemically
active
nanostructured
materials
could
fundamentally
influence
their
subsequent
catalytic
as
well
oxygen
evolution
reaction
(OER)
performance.
Enhanced
OER
activity
for
mixed-metal
spinel-type
sulfide
(CuCo2S4)
nanorods
is
generally
done
by
blending
material
that
has
high
conductive
supports
together
with
those
having
a
surface
volume
ratio,
example,
graphitic
carbon
nitrides
(g-C3N4).
Here,
we
report
noble-metal-free
CuCo2S4
nanorod-based
electrocatalyst
appropriate
basic
and
neutral
media,
through
simple
one-step
thermal
decomposition
approach
from
its
molecular
precursors
pyrrolidine
dithiocarbamate-copper(II),
Cu[PDTC]2,
dithiocarbamate-cobalt(II),
Co[PDTC]2
complexes.
Transmission
electron
microscopy
(TEM)
images
X-ray
diffraction
(XRD)
patterns
suggest
as-synthesized
are
highly
crystalline
in
nature
connected
on
g-C3N4
support.
Attenuated
total
reflectance–Fourier-transform
infrared
(ATR-FTIR),
photoelectron
spectroscopy
(XPS),
Raman
studies
affirm
successful
formation
bonds
bridge
(Co–N/S–C)
at
interface
g-C3N4.
The
kinetics
expedited,
these
bridging
function
an
transport
chain,
empowering
electrocatalytically
under
low
overpotential
(242
mV)
current
density
10
mA
cm–2
conditions,
resulting
very
durability.
Moreover,
CuCo2S4/g-C3N4
composite
exhibit
medium
406
mV
cm–2.
Chemical Society Reviews,
Год журнала:
2019,
Номер
48(15), С. 4178 - 4280
Опубликована: Янв. 1, 2019
This
review
describes
an
in-depth
overview
and
knowledge
on
the
variety
of
synthetic
strategies
for
forming
metal
sulfides
their
potential
use
to
achieve
effective
hydrogen
generation
beyond.
Advanced Functional Materials,
Год журнала:
2019,
Номер
29(20)
Опубликована: Янв. 21, 2019
Abstract
Electrochemical
water
splitting
is
recognized
as
a
practical
strategy
for
impelling
the
transformation
of
sustainable
energy
sources
such
solar
from
electricity
to
clean
hydrogen
fuel.
To
actualize
large‐scale
production,
it
paramount
develop
low‐cost,
earth‐abundant,
efficient,
and
stable
electrocatalysts.
Among
those
electrocatalysts,
alternative
architectural
arrays
grown
on
conductive
substrates
have
been
proven
be
highly
efficient
toward
due
large
surface
area,
abundant
active
sites,
synergistic
effects
between
electrocatalysts
substrates.
Herein,
advancement
nanoarray
architectures
in
electrocatalytic
applications
reviewed.
The
categories
different
nanoarrays
reliable
versatile
synthetic
approaches
are
summarized.
A
unique
emphasis
highlighted
promising
strategies
enhance
activities
stability
by
component
manipulation,
heterostructure
regulation,
vacancy
engineering.
intrinsic
mechanism
analysis
electronic
structure
optimization,
intermediates'
adsorption
facilitation,
coordination
environments'
amelioration
also
discussed
with
regard
theoretical
simulation
situ
identification.
Finally,
challenges
opportunities
valuable
directions
pathways
outstanding
performance
provided
conversion
field,
facilitating
development
systems.
Abstract
Flexible
quasi‐/all‐solid‐state
supercapacitors
have
elicited
scientific
attention
to
fulfill
the
explosive
demand
for
portable
and
wearable
electronic
devices.
However,
use
of
electrode
materials
faces
several
challenges,
such
as
intrinsically
slow
kinetics
volume
change
upon
cycling,
which
impede
energy
output
electrochemical
stability.
This
study
presents
well‐aligned
molybdenum
dioxide@nitrogen‐doped
carbon
(MoO
2
@NC)
copper
cobalt
sulfide
(CuCo
S
4
)
tubular
nanostructures
grown
on
flexible
fiber
in
supercapacitors.
Benefiting
from
chemically
stable
interfaces,
affluent
active
sites,
efficient
1D
electron
transport,
MoO
@NC
CuCo
integrated
conductive
substrates
deliver
excellent
performance.
A
quasi‐solid‐state
asymmetric
supercapacitor
composed
negative
positive
achieves
an
ultrahigh
density
65.1
W
h
kg
−1
at
a
power
800
retains
favorable
27.6
12.8
kW
.
Moreover,
it
demonstrates
good
cycling
performance
with
90.6%
capacitance
retention
after
5000
cycles
mechanical
flexibility
by
enabling
92.2%
2000
bending
cycles.
provides
effective
strategy
develop
superior
Advanced Functional Materials,
Год журнала:
2022,
Номер
33(10)
Опубликована: Дек. 26, 2022
Abstract
The
electrochemical
oxygen
evolution
reaction
(OER)
is
a
core
electrode
for
the
renewable
production
of
high‐purity
hydrogen,
carbon‐based
fuel,
synthetic
ammonia,
etc.
However,
sluggish
kinetics
OER
result
in
high
overpotential
and
limit
widespread
application
OER‐based
technologies.
Recent
studies
have
shown
that
bimetallic‐based
materials
with
synergism
different
metal
components
to
regulate
adsorption
dissociation
energy
intermediates
are
promising
electrocatalyst
candidates
lower
cost
consumption.
In
past
two
decades,
tremendous
efforts
been
devoted
developing
applications
focus
on
compositions,
phase,
structure,
etc.,
highlight
components.
there
lack
critical
thinking
organized
analysis
materials.
This
review
critically
discusses
challenges
materials,
summarizes
current
optimization
strategies
enhance
both
activity
stability,
highlights
state‐of‐the‐art
electrocatalysts
OER.
relationship
between
componential/structural
features
their
electrocatalytic
properties
presented
form
comprehensive
electronic
geometric
modifications
based
thorough
reported
works
discuss
future
realize
sustainable
applications.
Journal of Materials Chemistry A,
Год журнала:
2019,
Номер
7(15), С. 8771 - 8776
Опубликована: Янв. 1, 2019
Template-directed
synthesized
Fe0.1-Ni-MOF
nanoarray
(Fe0.1-Ni-MOF/NF)
behaves
efficiently
as
an
electrocatalyst
for
alkaline
water
oxidation
with
a
strong
electrochemical
durability.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2018,
Номер
6(9), С. 11877 - 11883
Опубликована: Июль 16, 2018
Hydrogen
produced
from
water
splitting
offers
a
green
alternative
to
conventional
energy
such
as
fossil
fuels.
Herein,
CuCo2S4
nanowire
arrays
were
synthesized
on
nickel
foam
substrate
by
two-step
hydrothermal
approach
and
utilized
highly
efficient
bifunctional
electrocatalyst
for
overall
splitting.
The
identified
an
exceptionally
active
catalyst
the
hydrogen
evolution
reaction
(HER)
in
basic
solution
with
extremely
low
overpotential
of
65
mV
reach
current
density
10
mA/cm2.
hierarchically
structured
electrode
was
also
toward
oxygen
(OER),
achieving
high
100
mA/cm2
at
only
310
mV.
Consequently,
alkaline
electrolyzer
constructed
using
both
anode
cathode
can
realize
cell
voltage
1.65
V,
suggesting
promising
