Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
Metal
selenides
with
excellent
electronic
conductivity
and
high
theoretical
capacity
present
great
superiority
as
alternative
anodes
in
sodium
ion
batteries
(SIBs).
However,
they
face
huge
challenges
such
severe
polyselenides
shuttling
slow
diffusion
kinetics.
To
address
these
issues,
entropy
regulation
strategy
is
employed
to
optimize
the
presence
of
Se
vacancies
successfully
prepared
NiCoFeMnCr/CNTs
(HE‐MSe/CNTs)
rich
vacancies.
This
material
enhances
adsorption
energy
for
shuttle
compounds
like
Na
2
4
,
effectively
limiting
dissolution
improving
kinetics
ions
well
structural
thermodynamics
x
HE‐MSe/CNTs
phase.
Experimental
results
indicate
that
achieve
a
highly
reversible
storage
process
involving
intercalation
conversion
reaction
mechanisms.
enables
superior
rate
capability
400.4
mAh
g
−1
at
current
density
5
A
long‐term
durability
90%
retention
after
1000
cycles
1
.
Therefore,
utilizing
customize
vacancy
formation
provides
new
insights
methods
enhancing
performance
SIB
anodes.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 6, 2024
Abstract
Transition
metal
sulfides
as
anode
materials
for
sodium‐ion
batteries
(SIBs)
have
the
advantage
of
high
capacity.
However,
their
cycle‐life
and
rate
performance
at
ultra‐high
current
density
is
still
a
thorny
issue
that
limit
applicability
these
materials.
In
this
paper,
carbon‐embedded
heterojunction
with
sulfur‐vacancies
regulated
by
ultrafine
bimetallic
(vacancy‐CoS
2
/FeS
@C)
robust
interfacial
C‐S‐Co/Fe
chemical
bonds
successfully
synthesized
explored
an
material
battery.
By
changing
ratio
two
cations,
concentration
anion
sulfur
vacancies
can
be
in‐situ
adjusted
without
additional
post‐treatment.
The
as‐prepared
vacancy‐CoS
@C
offers
ultrahigh
(285.1
mAh
g
−1
200
A
),
excellent
long‐cycle
stability
(389.2
40
after
10000
cycles),
outperforming
all
reported
transition
sulfides‐based
SIBs.
Both
ex‐situ
characterizations
provide
strong
evidence
evolution
mechanism
phases
stable
solid‐electrolyte
interface
(SEI)
on
surface.
functional
theory
calculations
show
constructing
reasonable
significantly
increase
electronic
conductivity.
Notably,
assembled
@C//Na
3
V
(PO
4
)
/C
full‐cell
shows
capacity
226.2
400
cycles
2.0
,
confirming
material's
practicability.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(31)
Published: May 21, 2024
Abstract
Low‐cost,
high‐voltage‐platform,
and
high‐capacity
MnO
2
is
the
most
promising
cathode
candidate
for
developing
high‐energy‐density
aqueous
zinc‐ion
batteries.
However,
Buckets
effect
of
runaway
phase
transition
irreversible
dissolution
restricts
electrochemical
performance
.
To
address
this
issue,
report
presents
a
bottom‐up
targeted
assembly
concept
driven
by
Gibbs
free
energy
design
robust
Ni‐MnO
2‐x
F
x
host
via
Ni
2+
pre‐intercalation
coupled
with
fluorine
doping.
The
regulated
coordination
interlayer
reinforcement
interfacial
defect
repair,
which
prevents
“layer‐to‐spinel”
inhibits
during
long‐term
cycling.
As
expected,
provides
superior
H
+
/Zn
storage
across
wide
temperature
range.
A
capacity
180.4
mAh
g
−1
retained
after
1000
cycles
at
,
high
specific
293.9
250
50
°C
144.5
3000
0
0.5
This
work
new
insights
into
stable
battery‐compatible
hosts
batteries
as
well
other
battery
chemistries.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
Abstract
The
development
of
high
energy/power
density
and
long
lifespan
device
is
always
the
frontier
direction
attracts
great
research
attention
in
energy
storage
fields.
Zinc‐ion
capacitors
(ZICs),
as
an
integration
zinc‐ion
batteries
supercapacitors,
have
been
widely
regarded
one
viable
future
options
for
storage,
owing
to
their
variable
system
assembly
method
potential
performance
improvement.
However,
ZICs
still
locate
at
initial
stage
until
now,
how
construct
suitable
systems
different
condition
challenging.
Herein,
recent
advance
rational
design
reviewed
order
related
theory
including
compatible
principle
paradigm.
It
starts
with
a
systematically
summary
fundamental
well
motivation.
Then,
electrode
materials
are
classified
into
capacitor‐type
battery‐type
based
on
mechanism,
strategies
progress
these
two‐type
candidates
comprehensively
discussed,
aiming
reveal
inherent
relationship
between
devices
component
architecture
materials.
Beyond
that,
perspectives
this
emerging
field
also
given,
expecting
guide
construction
high‐performance
practical
applications
boost
its
development.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(32)
Published: April 29, 2024
Abstract
The
high
electronic
conductivity
and
tailorable
structural
properties
of
MXene
materials
make
them
promising
candidates
for
energy
storage.
However,
their
poor
chemical
instability
self‐stacking
effect
greatly
limit
application,
especially
in
aqueous
systems.
Here,
using
a
eutectic
etching
approach,
hydroxylated
borophene
is
used
as
trifunctional
mediator
to
construct
robust
Ti
3
C
2
T
x
‐based
MXene/B
self‐assembled
film
electrodes
zinc‐ion
capacitors
(ZICs).
Due
this
mediator,
the
as‐formed
strong
interfacial
binding
within
heterostructure
can
give
rise
an
integrated
modification
promote
high‐efficiency
interface
One
strengthen
thermodynamic
stability
local
Ti─O
bonds
inhibit
irreversible
degradation
MXene;
two
enlarge
space
electrode
boost
ion
transport;
three
improve
Zn
2+
trapping
ability
without
affecting
migration
on
surface.
Thus,
exhibits
areal
capacitance
(537.9
mF
cm
−2
)
at
current
density
0.2
mA
extraordinary
cycling
1
,
with
99.64%
retention
after
40
000
cycles,
which
far
surpasses
that
most
previous
reports.
This
work
provides
pathway
overcoming
storage
high‐performance
ZICs.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
1T-MoS2
is
considered
an
attractive
energy
storage
material
due
to
its
large
layer
spacing
and
excellent
electrical
conductivity.
Unfortunately,
difficult
synthesize
directly
the
substability,
which
limits
development
application.
Electron-filling
engineering
of
Mo
4d
orbitals
core
idea
induce
efficient
conversion
2H
1T
phase.
Based
on
this
theory,
a
homogeneous
CuS@MoS2
heterogeneous
nanosheet
successfully
constructed
based
electron-rich
CuS
as
electron
donor.
Both
density
functional
theory
(DFT)
X-ray
absorption
fine
structure
analysis
(XAFS)
illustrate
that
part
electrons
from
Cu
at
interface
are
transferred
Mo,
triggers
reorganization
formation
strong
built-in
electric
field
interface,
induces
irreversible
phase
transition
in
MoS2.
structural
features,
nanosheets
have
high
first
discharge
capacity
725
mAh
g-1
0.1
A
g-1,
rate
performance
(466.73
10
g-1),
long
cycle
stability
(506.03
after
3200
cycles
5
g-1).
This
work
provides
new
perspectives
for
high-performance
sodium
anode
materials
1T-rich
