Journal of the American Ceramic Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 1, 2024
Abstract
The
burgeoning
requirement
for
compact
electronic
devices
has
intensified
research
into
lead‐free
dielectric
ceramics
that
offer
superior
recoverable
energy
storage
density
and
efficiency
at
low
electric
fields.
In
this
study,
we
report
the
synthesis
of
Nd
3+
‐doped
(Bi
0.4
K
0.2
Na
Sr
)TiO
3
perovskite
via
solid‐state
reaction
technique.
synthesized
adopted
a
tetragonal
crystal
structure.
As
concentration
ions
increased,
both
maximum
constant
(
ε
m
)
its
corresponding
temperature
T
decrease.
incorporation
perturbed
long‐range
ferroelectric
order,
leading
to
diminished
polarization
P
remanent
r
).
achieved
optimal
properties
with
12
mol%
doping,
showcasing
significant
1.50
J/cm
field
140
kV/cm,
along
an
exceptional
94.6%.
This
not
only
highlights
promising
candidate
materials
in
applications
but
also
introduces
innovative
approach
enhance
performance.
Abstract
High‐entropy
oxides
(HEOs)
have
garnered
significant
attention
within
the
realm
of
rechargeable
batteries
owing
to
their
distinctive
advantages,
which
encompass
diverse
structural
attributes,
customizable
compositions,
entropy‐driven
stabilization
effects,
and
remarkable
superionic
conductivity.
Despite
brilliance
HEOs
in
energy
conversion
storage
applications,
there
is
still
lacking
a
comprehensive
review
for
both
entry‐level
experienced
researchers,
succinctly
encapsulates
present
status
challenges
inherent
HEOs,
spanning
features,
intrinsic
properties,
prevalent
synthetic
methodologies,
diversified
applications
batteries.
Within
this
review,
endeavor
distill
characteristics,
ionic
conductivity,
entropy
explore
practical
(lithium‐ion,
sodium‐ion,
lithium‐sulfur
batteries),
including
anode
cathode
materials,
electrolytes,
electrocatalysts.
The
seeks
furnish
an
overview
evolving
landscape
HEOs‐based
cell
component
shedding
light
on
progress
made
hurdles
encountered,
as
well
serving
guidance
compositions
design
optimization
strategy
enhance
reversible
stability,
electrical
electrochemical
performance
conversion.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(27)
Опубликована: Апрель 23, 2024
Abstract
Emerging
high
entropy
compounds
(HECs)
have
attracted
huge
attention
in
electrochemical
energy‐related
applications.
The
features
of
ultrafine
size
and
carbon
incorporation
show
great
potential
to
boost
the
ion‐storage
kinetics
HECs.
However,
they
are
rarely
reported
because
high‐temperature
calcination
tends
result
larger
crystallites,
phase
separation,
reduction.
Herein,
using
NaCl
self‐assembly
template
method,
by
introducing
a
high‐pressure
field
process,
atom
diffusion
separation
inhibited
for
general
formation
HECs,
HEC
aggregation
is
obtaining
size.
preparation
ultrafine‐sized
(<10
nm)
HECs
(nitrides,
oxides,
sulfides,
phosphates)
anchored
on
porous
composites
realized.
They
demonstrated
combining
advanced
characterization
technologies
with
theoretical
computations.
Ultrafine‐sized
sulfides‐MnFeCoCuSnMo/porous
(HES‐MnFeCoCuSnMo/PC)
as
representative
anodes
exhibit
excellent
sodium‐ion
storage
capacities
(a
rating
capacity
278
mAh
g
−1
at
10
A
full
cell
cycling
281
20
after
6000
cycles
half
cell)
due
advantages
effect,
size,
PC
incorporation.
Our
work
provides
new
opportunity
designing
fabricating
ACS Energy Letters,
Год журнала:
2024,
Номер
9(6), С. 2960 - 2980
Опубликована: Май 28, 2024
Rechargeable
batteries
are
considered
to
be
one
of
the
most
feasible
solutions
energy
crisis
and
environmental
pollution.
As
a
bridge
between
cathode
anode
battery,
electrolytes
play
critical
roles
in
improving
battery
performance.
Recently,
high-entropy
(HEEs)
with
unique
properties
were
proposed.
Specifically,
HEEs
can
accelerate
ionic
diffusion
kinetics
promote
dissolution
salts
as
well
broaden
operating
temperature
batteries.
This
Review
provides
comprehensive
summary
application
working
mechanisms
rechargeable
First,
motivation,
history,
definitions
introduced.
Then,
enhancing
electrochemical
performance
liquid
solid-state
presented,
especially
conductivity
achieving
wide
range.
Finally,
current
issues
possible
future
directions
new
perspective
on
design
high-performance
electrolytes.
Journal of Advanced Ceramics,
Год журнала:
2024,
Номер
13(8), С. 1093 - 1118
Опубликована: Май 24, 2024
The
coordinated
development
of
new
energy
vehicles
and
the
storage
industry
has
become
inevitable
to
reduce
carbon
emissions.
cathode
material
is
key
that
determines
density
cost
a
power
battery,
while
currently
developed
applied
can
not
meet
requirements
high
specific
capacity,
low
cost,
safety
good
stability.
High-entropy
type
single-phase
composed
multiple
principal
elements
in
equimolar
or
near-equimolar
ratios.
interaction
between
play
an
important
role
improving
comprehensive
properties
material,
which
expected
solve
limitations
battery
materials
practical
applications.
Based
on
this,
this
review
provides
overview
current
status
modification
strategies
batteries
(lithium-ion
sodium-ion
battery),
proposes
high-entropy
design
strategy,
analyzes
structure-activity
relationship
effect
performance.
Finally,
future
research
topics
are
proposed,
including
computational
guide
design,
synthesis
methods,
electrochemistry
high-throughput
databases.
This
aims
provide
guidance
for
next-generation
batteries.
