Eurasian Physical Technical Journal,
Journal Year:
2024,
Volume and Issue:
21(4(50)), P. 14 - 22
Published: Dec. 25, 2024
This
review
article
focuses
on
the
study
of
carbon
materials
utilized
as
electrodes
in
lithium-ion
batteries
and
supercapacitors.
The
research
examines
three
primary
categories
materials:
activated
carbon,
aerogels,
nanoporous
carbon.
provides
a
comprehensive
explanation
operational
principles
many
types
capacitor
systems,
such
double-layer
electrochemical
capacitors,
pseudo
hybrid
capacitors.
under
discussion
are
thoroughly
examined
with
focus
their
synthesis
processes,
structural
features,
properties.
investigates
impact
pore
structure,
surface
area,
presence
functional
groups
electrode
performance.
heat
treatment
chemical
modification
techniques
properties
synthesized
structures
has
been
investigated,
specifically
examining
parameters
temperature
duration.
text
benefits
drawbacks
each
material
type,
taking
into
account
individual
capacity,
cyclical
stability,
economic
efficiency.
emphasizes
importance
precise
adjustment
process
to
enhance
characteristics
showcases
possibility
employing
these
sophisticated
energy
storage
devices.
serves
crucial
resource
for
experts
engaged
developing
cutting-edge
It
also
highlights
potential
topics
future
realm
storage.
Materials,
Journal Year:
2025,
Volume and Issue:
18(9), P. 1937 - 1937
Published: April 24, 2025
In
this
work,
we
introduce
a
high
entropy
effect
in
designing
relaxor
ferroelectric
(RFE)–antiferroelectric
(AFE)
crossover
ceramic
by
incorporating
relaxor-like
oxide
(Pb0.25Ba0.25Sr0.25Ca0.25)TiO3
with
antiferroelectric
NaNbO3.
The
results
show
that
the
ferroelectricity
of
system
is
enhanced
increasing
NaNbO3,
and
when
new
composition
reaches
highest
configurational
entropy,
stable
energy
storage
properties
can
be
achieved.
This
enabled
breakdown
strength
due
to
small
grain
size
slim
hysteresis
loop
efficiency
entropy-stabilized
short-range
ordered
polar
nanoregions
(PNRs).
These
findings
showcase
potential
strategy
for
exploiting
compositions
high-performance
electrostatic
capacitors.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 5, 2024
Abstract
The
inferior
electrical
conductivity
and
sluggish
lithium
storage
kinetics
of
conventional
high‐entropy
oxide
(HEO)
are
critical
issues
hindering
their
commercialization.
high
electronegativity
metalloids
can
ameliorate
this
predicament
by
altering
the
electronic
configuration
HEO
compared
to
metals.
Herein,
metalloid
phosphorus
doping
in
spinel‐type
(P
x
A
1‐x
)B
2
O
4
(A/B
=
Cr,
Mn,
Fe,
Co,
Ni)
(P‐HEO)
is
achieved
through
a
facile
sol–gel
process.
facilitates
transfer
electrons
from
transition
metal
sites
phosphorus‐doped
sites,
resulting
formation
electron‐rich
electron‐deficient
local
regions
on
surface
conducive
an
increase
total
number
active
electrochemical
reaction
Density
functional
theory
calculation
reveals
Li
adsorption
energy
synthesized
P‐HEO
only
−1.102
eV,
demonstrating
that
enables
strong
coupling
between
ions
P‐HEO.
Furthermore,
also
leads
oxygen
vacancies
lattice
distortion,
which
significantly
enhances
charge
efficiency
diffusion
results
enhanced
performance
with
impressive
rate
capability
long‐term
stability.
These
findings
provide
valuable
insights
for
design
lattice‐engineered
as
versatile
electrodes
future
applications.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Abstract
Achieving
composition
and
structure
regulation
on
high
entropy
materials
is
a
big
challenge
but
will
give
this
kind
of
new
huge
boost
in
energy
storage.
Herein,
novel
oxide
((CrMnFeCoNi)
3
O
4
)
duplex
yolk–shell
(DYSHEO)
with
isogenic
amorphous/crystalline
heterophase
are
designed
successfully
prepared
through
simple
microthermal
solvothermal
reaction
followed
by
mesothermal
calcination.
The
results
precursor
structure,
while
the
calcination
(annealing
temperature
at
450
°C)
realizes
transformation
to
(CrMnFeCoNi)
(DYSHEO‐450)
structure.
effect,
endow
DYSHEO‐450
great
advantages
as
lithium‐ion
battery
anode
including
reducing
ion
migration
obstruction,
accommodating
volume
expansion,
alleviating
stress.
Accordingly,
exhibits
capacities
1721
mAh
g
−1
@0.5
A
,
1356
@1
after
500
cycles
capacity
retention
rate
90.3%.
It
also
shows
excellent
performances
practical
application
coin‐type
full
cell.
This
work
provides
ideas
directions
for
structural
high‐entropy
materials.
