Revisiting Intercalation Anode Materials for Potassium-Ion Batteries
Materials,
Год журнала:
2025,
Номер
18(1), С. 190 - 190
Опубликована: Янв. 4, 2025
Potassium-ion
batteries
(KIBs)
have
attracted
significant
attention
in
recent
years
as
a
result
of
the
urgent
necessity
to
develop
sustainable,
low-cost
based
on
non-critical
raw
materials
that
are
competitive
with
market-available
lithium-ion
batteries.
KIBs
excellent
candidates,
they
offer
possibility
providing
high
power
and
energy
densities
due
their
faster
K+
diffusion
very
close
reduction
potential
compared
Li+/Li.
However,
research
is
still
its
infancy,
hence,
more
investigation
required
both
at
level
device
level.
In
this
work,
we
focus
strategies
enhance
electrochemical
properties
intercalation
anode
materials,
i.e.,
carbon-,
titanium-,
vanadium-based
compounds.
Hitherto,
most
promising
those
carbon-based,
such
graphite,
soft,
or
hard
carbon,
each
advantages
disadvantages.
Although
wide
variety
been
reported
results,
there
need
improve
standardization
best
carbon
properties,
electrode
formulation,
electrolyte
composition,
given
impossibility
direct
comparison.
Therefore,
additional
effort
should
be
made
understand
what
crucial
parameters
reference
formulation
further
boost
performance
move
step
forward
commercialization
KIBs.
Язык: Английский
Doping at sp2-Site in Graphene+ Monolayers as High-Capacity Nodal-Line Semimetal Anodes for Na-Ion Batteries: A DFT Study
ACS Omega,
Год журнала:
2025,
Номер
10(9), С. 9301 - 9313
Опубликована: Фев. 28, 2025
Topological
semimetals,
especially
topological
semimetallic
carbon-based
materials,
exhibit
high
electrical
conductivity
that
is
resistant
to
disruptions
from
defects
or
impurities,
making
them
ideal
alternatives
as
anode
materials
for
sodium-ion
batteries
(SIBs).
Recently,
a
novel
two-dimensional
carbon
allotrope
known
graphene+
was
theoretically
proposed
[Yu
et
al.,
Cell
Rep.
Phys
Sci.,
3,
100790
(2022)],
and
because
of
its
fascinating
features,
it
shows
potential
variety
applications.
In
this
study,
we
two
new
named
M2C7
(M
=
B
Si)
monolayers,
which
can
be
obtained
by
doping
boron
silicon
atoms
into
at
sp2-site,
thoroughly
investigated
their
suitability
use
SIB
materials.
We
found
they
distinctive
mechanical
electronic
properties,
including
negative
Poisson's
ratios
Dirac
nodal-line
semimetal
along
with
excellent
dynamic,
mechanical,
thermal
stability.
Particularly
noteworthy
monolayers
show
energy
densities
Na
adsorption
attributed
elevated
storage
capacity
(2028.65
1528.76
mA
h
g–1),
lower
barrier
(0.29
0.14
eV),
minimal
volumetric
variation
(1.0%
0.27%)
compared
pristine
(with
values
1487.70
g–1,
0.16
eV,
0.30%,
respectively).
These
findings
demonstrate
the
high-performance
Язык: Английский