Energies,
Год журнала:
2025,
Номер
18(11), С. 2818 - 2818
Опубликована: Май 28, 2025
The
increasing
adoption
of
electric
vehicles
(EVs)
is
driving
the
need
for
more
efficient,
scalable,
and
flexible
charging
infrastructures.
Among
most
promising
solutions
are
reconfigurable
multi-point
multi-power
(MPMP)
stations,
which
enable
dynamic
power
allocation
across
multiple
points
operating
at
discrete
levels.
This
paper
introduces
a
novel
management
strategy
MPMP
stations
based
on
Pareto
optimization,
aiming
to
minimize
average
time
while
ensuring
fairness
efficiency.
method
dynamically
allocates
among
all
connected
EVs,
adhering
system
constraints
varying
profiles
required
preserve
battery
health.
proposed
approach
was
validated
through
simulations
in
scenario
involving
six
EVs
with
heterogeneous
capacities
profiles.
Results
demonstrated
that
Pareto-based
achieved
significantly
lower
expected
when
compared
first-come
first-served
(FCFS).
Vanadium
disulfide
(VS2)
emerges
as
a
great
potential
anode
material
for
sodium-ion
batteries
(SIBs)
owing
to
its
large
layer
spacing
and
high
specific
capacity.
However,
the
severe
capacity
decay
ambiguous
sodium
storage
mechanism
severely
impair
merits.
Herein,
nano-micro
floral
spherical
VS2
is
designed
performance
enhancement
in
ether-based
electrolyte
deciphered.
The
undergoes
multiple
mechanisms,
involving
traditional
reaction
of
VS2↔NaVS2↔Na2S
unique
Na2S↔Na2Sx
(2
<
x
<8)
↔S8
facilitated
by
Cu
collector.
Meanwhile,
reactions
trigger
decomposition-reassembly
original
structure
form
hierarchical
porous
framework
that
mitigates
stress
generated
volume
changes.
Notably,
molecular
dynamics
simulations
electrochemical
measurements
indicate
not
only
facilitates
Na+
de-solvation
diffusion,
but
also
endows
electrode
with
speedy
diffusion
kinetics.
Consequently,
demonstrates
an
outstanding
reversible
655.8
mAh
g-1
after
900
cycles
at
ultra-high
20
A
g-1.
In
addition,
assembled
Na3V2(PO4)3//VS2
full
battery
achieves
superior
cycling
stability
average
decayed
rate
0.069%
per
cycle.
This
work
can
provide
precious
insights
into
development
advanced
metal-sulfide
materials.
Inorganics,
Год журнала:
2025,
Номер
13(3), С. 96 - 96
Опубликована: Март 20, 2025
Transition
metal
selenides
are
considered
one
of
the
most
promising
materials
for
sodium-ion
battery
anodes
due
to
their
excellent
theoretical
capacity.
However,
it
remains
challenging
suppress
volume
variation
and
resulted
capacity
decay
during
charge–discharge
process.
Herein,
hollow-structured
CoNiSe2
dual
transition
wrapped
in
a
carbon
shell
(HS-CoxNiySe2@C)
were
deliberately
designed
prepared
through
sequential
coating
polyacrylonitrile
(PAN),
ion
exchange
ZIF-67
with
Ni2+
ions,
carbonization/selenization.
The
hollow
structure
was
evidenced
by
transmission
electron
microscopy,
crystalline
confirmed
X-ray
diffraction.
ample
internal
space
HS-CoxNiySe2@C
effectively
accommodated
expansion
charge
discharge
processes,
large
surface
area
enabled
sufficient
contact
between
electrode
electrolyte
shortened
diffusion
path
sodium
ions
feasible
electrochemical
reaction.
ionic
conductivity
strongly
dependent
on
ratio
Co
Ni.
synergistic
effect
Ni
enhanced
mobility
HS-CoxNiySe2@C,
thereby
improving
transfer
efficiency.
By
taking
into
account
structural
advantages
rational
selenide
ratios,
significant
improvements
can
be
achieved
cycling
performance,
rate
overall
stability
batteries.
optimized
demonstrated
reversible
remained
at
334
mAh
g−1
after
1000
cycles
high
current
5.0
A
g−1.
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
Abstract
The
design
of
a
single
anode
material
compatible
with
both
Li⁺
and
Na⁺
storage
represents
critical
advancement
in
the
development
advanced
lithium‐ion
(LIBs)
sodium‐ion
batteries
(SIBs),
particularly
from
cost‐effectiveness
perspective.
Tin
phosphide,
conversion‐type
material,
presents
an
energy
mechanism
without
specific
constraints
on
ion
size
or
alloy
properties
can
provide
high
capacity
respect
to
Li
Na
ions,
making
it
ideal
candidate
for
dual
applications
LIBs
SIBs.
However,
its
large
volumetric
expansion
during
conversion
reaction
low
electronic
conductivity
lead
rapid
degradation.
Herein,
coated
hollow
Sn
4
P
3
sphere
structure
is
designed,
wherein
nanospheres
(Sn
HNs)
are
tightly
encapsulated
by
MXene
nanosheets.
nanosphere
provides
space
inward
expansion,
while
coating
prevents
outward
enhances
conductivity,
endowing
composite
excellent
cyclic
stability
rate
capabilities.
For
storage,
exhibits
retention
92.75%
95%
at
1
A
g
−1
after
1200
1500
cycles,
respectively.
remarkable
electrochemical
demonstrated
this
study
indicate
that
highly
competitive
option
simultaneous
application
batteries.
