Comparison of Microfluidic Synthesis of Silver Nanoparticles in Flow and Drop Reactors at Low Dean Numbers
Micromachines,
Год журнала:
2025,
Номер
16(1), С. 75 - 75
Опубликована: Янв. 10, 2025
This
study
evaluates
the
performance
of
continuous
flow
and
drop-based
microfluidic
devices
for
synthesis
silver
nanoparticles
(AgNPs)
under
identical
hydrodynamic
chemical
conditions.
Flows
at
low
values
Dean
number
(De
<
1)
were
investigated,
where
contribution
vortices
forming
inside
drop
to
additional
mixing
reactor
should
be
most
noticeable.
In
device,
discrete
aqueous
drops
serving
as
reactors
generated
by
focusing
using
silicone
oil
phase.
Aqueous
solutions
reagents
supplied
through
two
different
channels
merging
just
before
formed.
merged
a
Tee
junction,
reaction
was
carried
out
in
outlet
tube.
Although
systems
may
face
challenges
such
particle
concentration
reduction
due
deposition
on
channel
wall
or
fouling,
they
are
often
more
practical
research
their
operational
simplicity,
primarily
elimination
need
separate
nanoparticle
dispersion
from
The
results
demonstrate
that
both
approaches
produced
AgNPs
similar
sizes
when
conditions
defined
De
residence
time
within
similar.
Язык: Английский
Innovative Polymer Nanocomposite of P(VDF‐TrFE)/PEDOT:PSS/MgO for High‐Performance Supercapacitors
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 12, 2025
ABSTRACT
This
study
presents
an
innovative
P(VDF‐TrFE)/PEDOT:PSS/MgO
composite
electrode,
designed
to
enhance
the
electrochemical
performance
of
supercapacitors.
The
synergistic
combination
P(VDF‐TrFE)
(high
dielectric
constant),
PEDOT:PSS
electrical
conductivity),
and
MgO
nanoparticles
(improved
ion
accessibility)
results
in
optimized
nano‐architecture
for
superior
charge
storage.
Structural
morphological
analyses
confirm
formation
a
well‐dispersed
with
enhanced
interfacial
interactions.
electrode
exhibits
specific
capacitance
50
F/g
at
10
mV/s,
retaining
70%
high
scan
rates,
excellent
cyclic
stability
over
5000
cycles.
Electrochemical
impedance
spectroscopy
reveals
low
solution
resistance
(1
Ω)
transfer
(6
Ω),
ensuring
efficient
transport.
Compared
conventional
polymer‐based
electrodes,
this
demonstrates
higher
retention,
lower
internal
resistance,
energy
density
(0.01
Wh/kg
0.08
A/g).
These
findings
establish
as
promising
material
next‐generation
flexible
high‐performance
storage
applications.
Язык: Английский
Morphological Engineering of Battery-Type Cobalt Oxide Electrodes for High-Performance Supercapacitors
Physchem,
Год журнала:
2025,
Номер
5(1), С. 11 - 11
Опубликована: Март 14, 2025
Nanomaterials
have
attracted
significant
attention
in
recent
decades
for
their
diverse
applications,
including
energy
storage
devices
like
supercapacitors.
Among
these,
cobalt
oxide
(Co3O4)
nanostructures
stand
out
due
to
high
theoretical
capacitance,
unique
electrical
properties,
and
tunable
morphology.
This
study
explores
the
hydrothermal
synthesis
of
Co3O4,
revealing
that
molar
ratio
nitrate
potassium
hydroxide
significantly
influences
morphology,
crystal
structure,
electrochemical
performance.
An
optimized
1:1
(COK
11)
yielded
well-defined
cubic
with
uniform
elemental
distribution,
as
confirmed
by
SEM,
TEM,
EDS
analyses.
Structural
characterization
through
XRD,
XPS,
FTIR
validated
formation
Co3O4
spinel
phase
distinctive
lattice
surface
oxygen
features.
Electrochemical
property
analysis
demonstrated
superior
performance
COK
11
electrode,
achieving
a
specific
capacity
825
±
3
F/g
at
current
density
1
A/g,
rate
capability
56.88%,
excellent
cycle
stability
88%
A/g
after
10,000
cycles.
These
properties
are
attributed
nano-cubic
morphology
interconnected
porosity,
which
enhanced
ion
transport
active
area.
highlights
importance
parameters
tailoring
nanomaterials
storage,
establishing
promising
candidate
next-generation
high-performance
supercapacitor
applications.
Язык: Английский
Exploring Nanomaterials for Enhanced Energy Storage and Conversion
IGI Global eBooks,
Год журнала:
2025,
Номер
unknown, С. 193 - 250
Опубликована: Апрель 18, 2025
Our
pressing
need
to
build
better
energy
storage
and
conversion
systems
grows
as
our
world
develops
faster.
Energy
perform
through
nanomaterials
which
have
unique
physicochemical
traits
redefine
how
these
technologies
work.
This
chapter
evaluates
strengthen
technology
product
types
fabrication
processes
for
particular
solutions.
Materials
at
nanoscale
show
because
of
their
huge
surface
area
flexible
design.
Nanomaterials
provide
multiple
solutions
storing
hydrogen
well
performing
electro
catalysis
photovoltaics.
shows
that
requires
exact
engineering
along
with
modeling
environmental-friendly
nanomaterial
manufacturing
help
turn
scientific
discoveries
into
real-world
applications
next-level
Язык: Английский
Fabrication and Characterization of Coin Cell Supercapacitor Device Using PEDOT:PSS/MgO Polymer Nanocomposite as Active Material
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 4, 2025
ABSTRACT
Poly(3,4‐ethylenedioxythiophene):polystyrene
sulfonate
(PEDOT:PSS)/magnesium
oxide
(MgO)
polymer
nanocomposites
were
synthesized
and
evaluated
as
active
materials
for
energy
storage
applications.
The
composite
electrodes
exhibited
a
high
specific
capacitance
of
121
F
g
−1
at
scan
rate
10
mV
s
in
2
M
KOH
electrolyte,
demonstrating
excellent
electrochemical
performance.
device
achieved
coulombic
efficiency
99%
its
initial
after
800
galvanostatic
charge–discharge
(GCD)
cycles
0.2
A
.
Additionally,
it
displayed
an
density
1.3
Wh
kg
power
5514
W
,
which
are
competitive
with
state‐of‐the‐art
supercapacitor
materials.
Electrochemical
Impedance
Spectroscopy
(EIS)
spectra
reveal
the
low
internal
(
R
=
2.29
Ω)
charge
transfer
resistance
ct
390
μΩ)
suggest
higher
conductivity.
symmetric
coin
cell
was
fabricated,
achieving
working
potential
3.04
V
successfully
powering
LED,
showcasing
real‐world
applicability.
This
study
highlights
PEDOT:PSS/MgO
efficient,
cost‐effective,
scalable
next‐generation
devices.
Язык: Английский