Nachrichten aus der Chemie,
Journal Year:
2024,
Volume and Issue:
72(10), P. 28 - 30
Published: Sept. 30, 2024
Abstract
Das
größte
Problem
der
Energiewende
besteht
in
zeitlichen
und
örtlichen
Diskrepanz
zwischen
Strombereitstellung
‐nutzung.
Deshalb
sind
flexible
Speicherkapazitäten
Batterietypen
notwendig.
Insgesamt
verlangt
dies,
die
heutige
Netzstruktur
neu
zu
konzeptionieren.
Die
Chemie
ist
über
materialwissenschaftliche,
elektrochemische
thermodynamische
Techniken
beteiligt.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 27, 2025
Abstract
The
precise
tailoring
of
the
composition
and
structure
porous
carbon
is
crucial
for
its
application
in
capacitors.
Herein,
a
refined
stepwise
carbonization
strategy,
involving
holding
material
at
melting
temperature
metal
salts
controlled
carbonization,
proposed
to
precisely
design
coal
tar
pitch
(CTP)‐based
carbon.
effectively
modulates
yield,
pore
structure,
defect
level
Dwelling
point
promotes
dehydration‐condensation
CTP
stabilizes
skeleton,
yielding
high
content.
Theoretical
calculations
elucidate
interaction
between
hydroxyl
oxygen
CTP,
energy
barrier
as
metric
evaluate
ability
regulate
microcrystalline
proposed.
Meanwhile,
sodium
alginate
gels
induced
by
aforementioned
are
prepared,
zinc‐ion
hybrid
capacitor
assembled
with
prepared
gel
exhibits
superior
specific
capacity
(219
mAh
g
−1
),
density
(176.2
Wh
kg
broad
range
applicability
(−40–75
°C).
This
study
proposes
universal
method
controlling
capacitance
properties
CTP‐based
It
holds
promise
broadening
scope
preparation
other
materials.
IEEE Open Journal of Industry Applications,
Journal Year:
2025,
Volume and Issue:
6, P. 59 - 68
Published: Jan. 1, 2025
Na-ion
batteries
are
growing
interest
due
to
their
sustainability
and
low
cost.
A
wide
implementation
in
stationary
applications,
but
also
for
short
range
transportation,
is
envisaged.
This
further
supported
by
the
recent
progress
on
cells
with
increased
energy
density.
To
this
regards
development
of
procedures
real-time
assessment
state
health
crucial
relevance.
The
present
paper
provides
an
innovative
procedure
assess
sodium-ion
battery
capacity
fading
based
application
Discrete
Wavelet
Transform
voltage
signals,
acquired
once
a
certain
load
pattern
applied
at
terminals.
provided
through
cell
aging
test.
During
all
test
measurements
carried
out.
RMSE
between
assessed
measured
values
equals
1.18%.
Moreover,
during
significant
differences
performance
evolution
NCR
Li-ion
highlighted
discussed.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 21, 2025
Abstract
Slow
diffusion
kinetics
caused
by
the
low
conductivity
and
large
volume
changes
of
metal
sulfides
(MSs)
during
repeated
sodiation/desodiation
processes
greatly
limit
implementation
high‐rate
sodium
ion
batteries
(SIBs).
To
address
this,
inspired
vacancy
defect
engineering,
for
first
time,
defective
3D
In
2
S
3
/MXene
nanostructure
with
high‐density
vacancies
strong
interface
bonding
is
developed
as
fast‐charging
anode
SIBs.
This
design
enables
material
to
have
a
Na
+
energy
barrier
(0.28
eV)
absorption
(−1.68
eV),
resulting
in
high
coefficient
(5.01
×
10
−12
cm
s
−1
)
pseudocapacitive
contribution
97.3%.
Moreover,
exhibits
reversible
multistep
intercalation‐conversion
reaction
mechanism
superior
electrochemical
kinetics.
Consequently,
assembled
SIBs
display
performance
(202.2
mAh
g
at
100
A
long‐term
cycling
stability
over
5000
cycles
0.0074%
decay
per
cycle
20
.
On
this
basis,
Na‐ion
full
cell
assembled,
indicating
practical
application
material.
study
sheds
light
on
functional
electrode
materials
long‐lifespan
storage
devices.