Recent Advances in High‐Entropy Layered Oxide Cathode Materials for Alkali Metal‐Ion Batteries
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 29, 2024
Abstract
Since
the
electrochemical
de/intercalation
behavior
is
first
detected
in
1980,
layered
oxides
have
become
most
promising
cathode
material
for
alkali
metal‐ion
batteries
(Li
+
/Na
/K
;
AMIBs)
owing
to
their
facile
synthesis
and
excellent
theoretical
capacities.
However,
inherent
drawbacks
of
unstable
structural
evolution
sluggish
diffusion
kinetics
deteriorate
performance,
limiting
further
large‐scale
applications.
To
solve
these
issues,
novel
strategy
high
entropy
has
been
widely
applied
oxide
cathodes
AMIBs
recent
years.
Through
multielement
synergy
stabilization
effects,
high‐entropy
(HELOs)
can
achieve
adjustable
activity
enhanced
stability.
Herein,
basic
concepts,
design
principles,
methods
HELO
are
introduced
systematically.
Notably,
it
explores
detail
improvements
on
limitations
oxides,
highlighting
latest
advances
materials
field
AMIBs.
In
addition,
introduces
advanced
characterization
calculations
HELOs
proposes
potential
future
research
directions
optimization
strategies,
providing
inspiration
researchers
develop
areas
energy
storage
conversion.
Язык: Английский
Mitigating Long Range Jahn‐Teller Ordering to Stabilize Mn Redox Reaction in Biphasic Layered Sodium Oxide
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 31, 2024
Abstract
To
develop
the
next‐generation
commercial
oxide
cathodes
for
sodium‐ion
batteries,
it
is
crucial
to
reduce
expensive
Ni
element
content,
and
further
regulate
redox
reaction
of
cheap
transition
metal
elements
such
as
Mn
elevate
specific
capacity.
Nevertheless,
activation
(MRR)
remains
a
challenge,
notably,
MRR
induces
pronounced
Jahn‐Teller
effect,
resulting
in
severe
structural
distortion
fast
performance
decay.
Herein,
activated
by
Na
vacancies
weakened
hybridization
O
(2p)‐TM
(3d‐t
2
g
)
orbital,
biphasic
low‐Ni
Mn‐based
P2/O3‐Na
0.8
0.23
Fe
0.34
0.43
(P2/O3)
exhibits
reversible
MRR,
which
performs
between
4+
3+
during
charging
discharging.
Due
interlaced
arrangement
P2‐type
O3‐type
crystal
domains
P2/O3,
long
range
ordering
restricted
mitigate
cooperative
MnO6
octahedron
induced
effect
suppressed,
ensuring
sustained
stable
involvement
charge
compensation.
In
addition,
owing
introduction
phase,
there
significant
reduction
migration
barrier
sodium
ions
no
obvious
capacity
decline
after
air
exposure,
leading
marked
enhancement
dynamic
stability
respectively.
Consequently,
P2/O3
excellent
electrochemical
processing
performance.
Язык: Английский
Research progress on P2-type layered oxide cathode materials for sodium-ion batteries
Chemical Engineering Journal,
Год журнала:
2024,
Номер
500, С. 157264 - 157264
Опубликована: Ноя. 1, 2024
Язык: Английский
Realizing reversible anionic redox based on a Na–O–Li configuration for Na-layered oxide cathodes with solid-solution reaction
Chemical Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
The
incorporation
of
the
Na–O–Li
configuration
activates
and
stabilizes
anionic
redox
reactions,
realizing
complete
solid-solution
reaction,
leading
to
significant
improvements
in
capacity
cycling
stability.
Язык: Английский
Jahn‐Teller Effect in Sodium Layered Oxide Cathodes: Inducement Mechanisms, Mitigation Strategies, and Rational Utilizations
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 2, 2025
Abstract
The
sodium‐layered
transition
metal
oxides
(Na
x
TMO
2
)
are
regarded
as
the
promising
cathode
for
sodium‐ion
batteries
(SIBs)
relying
on
their
high
theory
capacity
and
cost‐effectiveness.
Nevertheless,
intrinsic
lattice
distortions
caused
by
Jahn‐Teller
active
ions
significantly
degrade
structural
stability
of
Na
,
generally
resulting
in
unsatisfactory
electrochemical
properties.
In
this
review,
begins
introducing
inducement
mechanisms
effect
(TM)
ions.
Subsequently,
restraining
strategies
well
corresponding
using
element
doping/substitutions,
surface
reconstructions,
polyphase
symbiosis,
TM/oxygen/Na
+
vacancy
manipulations
summarized
detail.
Specifically,
influences
such
mitigation
deformation
properties,
phase
evolution
behaviors,
TM
dissolution
characteristics,
crystal
comprehensively
discussed.
Furthermore,
sensible
utilization
distortion
is
to
build
cathodes
with
and/or
repaid
ion
transport
kinetics
well.
end,
challenges
faced
amelioration
methods
overviewed
put
forward
research
directions
future
trenchantly
constrain
6
octahedron
deformation.
This
work
will
provide
more
perceptions
further
studies
SIBs.
Язык: Английский