Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 9, 2024
Abstract
Aqueous
potassium‐ion
batteries
(AKIBs)
with
mild
aqueous
electrolytes
can
significantly
mitigate
the
safety
and
environmental
issues
raised
from
traditional
nonaqueous
batteries,
positioning
them
as
promising
candidates
for
grid‐scale
applications.
Nonetheless,
progression
of
AKIBs
is
currently
impeded
by
insufficient
energy
density,
largely
attributed
to
limited
voltage
window
electrolytes.
This
review
aims
introduce
foundational
knowledge
about
illustrates
recent
advancements
in
AKIBs,
offers
valuable
perspectives
on
designing
electrode
materials
optimizing
To
provide
a
systematic
overview,
focus
following
seven
key
sections:
i)
development
history,
ii)
materials,
iii)
electrolyte
design,
iv)
current
collectors,
v)
interphase
chemistry,
vi)
full
cell
configurations,
vii)
future
prospects.
Finally,
constructive
insights
suggestions
are
provided
higher
density.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 7, 2024
Many
studies
on
electrode
material
development
for
rechargeable
batteries
have
focused
improving
the
intrinsic
physicochemical
and
electrochemical
properties
of
active
materials,
but
performances
are
exhibited
by
overall
unit
consisting
conductive
additives,
a
binder.
Additionally,
electrodes
undergone
an
essential
calendering
process
to
enhance
physical
contact
between
those
components.
Therefore,
behavior
performance
cell
should
be
analyzed
at
level,
as
inherent
materials
might
changed
in
preparation,
including
calendaring
real-operating
environments.
In
this
study,
we
aimed
understand
reduced
graphene
oxide
(RGO)-containing
rather
than
RGO-active
studying
changes
RGO
before
after
process.
Specifically,
study
investigates
effect
electrochemically
interphase
formation
electrode.
We
found
that
deteriorates
impeding
enough
electrolyte
wetting,
limiting
thin
stable
solid–electrolyte
interphase,
leaving
unreacted
sheets.
Additional
experiments
with
carbon-coated
silicon/RGO
composite
demonstrate
process,
sequential
participation
Si/C
particles
reaction
resulted
much
more
severe
capacity
degradation
over
repeated
cycling
processes.
The
suggest
fine-controlling
number
sheets
maintaining
distance
even
required
utilization
batteries.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
Graphite
stands
out
as
the
most
promising
anode
material
for
potassium‐ion
batteries
(PIBs)
due
to
its
cost‐effectiveness
and
ideal
low‐potential
platform.
However,
perceived
poor
rate
capability
of
graphite
has
become
a
key
concern
commercial
application
in
PIBs.
Herein,
above
understanding
on
is
updated.
Without
modifying
structure,
by
simply
introducing
tin
trifluoromethanesulfonate
(Sn(OTf)
2
)
additive
phosphate‐based
electrolyte,
K||graphite
half‐cell
can
deliver
capacity
240
mAh
g
−1
at
high
C
(1
=
279
mA
operates
1000
cycles
with
negligible
degradation.
Moreover,
an
unprecedented
≈200
4
achieved
three‐electrode
K|K
ref|graphite
cell
configuration
where
interference
K
metal
counter
electrode
eliminated.
Unlike
structure
modification
strategies,
such
remarkable
performance
originated
from
low‐impedance
inorganic‐rich
KF/SnF
hybrid
interphase
graphite.
Thus,
effectiveness
electrolyte
regulation
strategy
highlights
underestimated
anode.
This
renewed
insight
dispels
regarding
applicability
enriches
advantages
PIBs
high‐power
density.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 22, 2025
Abstract
Potassium‐ion
batteries
(PIBs),
with
abundant
resources
and
low
cost,
are
considered
as
a
promising
alternative
to
commercial
lithium‐ion
for
low‐cost
large‐scale
applications.
Over
the
past
decade,
significant
academic
progresses
made
in
development
of
PIBs,
including
advancements
cathodes,
anodes,
electrolytes.
However,
most
improvements
achieved
under
laboratory
conditions
(e.g.,
K
metal‐based
half‐cells
mass
loading
active
materials),
performance
PIBs
full
cells
is
still
far
from
requirements
A
critical
insight
bridging
research
commercialization
urgently
needed
guide
future
this
field.
This
review
will
discuss
challenges
improvement
strategies
focusing
on
potential
practical
electrolytes,
well
their
cells.
It
aims
give
readers
clear
logical
understanding
PIBs.
The
application
analysis
also
discussed
provide
comprehensive
Finally,
perspectives
provided
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Abstract
Low‐concentration
electrolytes
(LCEs)
present
significant
potential
for
actual
applications
because
of
their
cost‐effectiveness,
low
viscosity,
reduced
side
reactions,
and
wide‐temperature
electrochemical
stability.
However,
current
electrolyte
research
predominantly
focuses
on
regulation
strategies
conventional
1
m
electrolytes,
high‐concentration
localized
leaving
design
principles,
optimization
methods,
prospects
LCEs
inadequately
summarized.
face
unique
challenges
that
cannot
be
addressed
by
the
existing
theories
approaches
applicable
to
three
common
mentioned
above;
thus,
tailored
provide
development
guidance
are
urgently
needed.
Herein,
a
systematic
overview
recent
progress
in
is
provided
subsequent
directions
suggested.
This
review
proposes
core
challenge
high
solvent
ratio
LCEs,
which
triggers
unstable
organic‐enriched
electrolyte/electrode
interface
formation
anion
depletion
near
anode.
On
basis
these
issues,
modification
including
passivation
construction
solvent‒anion
interaction
optimization,
used
various
rechargeable
battery
systems.
Finally,
role
advanced
simulations
cutting‐edge
characterization
techniques
revealing
LCE
failure
mechanisms
further
highlighted,
offering
new
perspectives
future
practical
application
next‐generation
batteries.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 9, 2024
Abstract
Potassium‐containing
transition
metal
layered
oxides
(K
x
TmO
2
),
although
possessing
high
energy
density
and
suitable
operating
voltage,
suffer
from
severe
hygroscopic
properties
due
to
their
two
dimensional
(2D)
structure.
Their
air
sensitivity
compromises
structural
stability
during
prolonged
exposure,
therefore
increasing
the
cost.
The
common
sense
for
designing
air‐stable
cathode
materials
is
avoid
contact
with
H
O
molecules.
In
this
study,
it
surprisingly
found
that
P3‐type
K
forms
an
ultra‐thin,
potassium‐rich
spinel
phase
wrapping
layer
after
simply
water
immersion,
remarkedly
reduces
reaction
activity
of
material's
surface
air.
Combined
Density
Function
Theory
(DFT)
calculations,
be
able
effectively
withstand
deterioration
preserving
crystal
Consequently,
water‐treated
material,
when
exposed
air,
can
largely
maintain
its
good
electrochemical
performance,
capacity
retention
up
99.15%
compared
fresh
samples.
Such
in
situ
transformation
mechanism
also
corroborated
other
,
underscoring
effectiveness
enhancing
+
storage.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 17, 2024
Na-S
and
K-S
batteries,
with
high-energy
density,
using
naturally
more
abundant
affordable
metals
compared
rare
resources
like
Li,
Co,
Ni
elements,
have
inspired
intense
research
interest.
However,
the
sulfur
cathodes
for
Na/K
storage
are
plagued
by
soluble
polysulfide
shuttling,
larger
volumetric
deformation,
sluggish
redox
kinetics.
Here,
we
report
that
a
conductive
organosulfur
polymer
microcage,
fabricated
facilely
microbe
elemental
as
precursors,
can
effectively
address
these
issues
stable
high-capacity
batteries.
The
covalently
bonded
short-chain
species
enable
superior
reaction
kinetics
avoid
formation.
microcage
architecture
built-in
cavities
buffers
volume
deformation
to
ensure
resilient
electrode.
resultant
promise
combination
of
high
capacity
extraordinary
cyclability
promising
rate
Coulombic
efficiency.
Especially,
battery
cathode,
it
could
deliver
1206.5
mAh
g
