Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 11, 2025
Layered
transition-metal
(TM)
oxides
are
of
high
application
value
as
a
cathode
for
potassium
(K)-ion
batteries
toward
energy
density.
However,
the
inadequate
covalency
TM-O
bond
inevitably
induces
TM
migration
and
subsequent
irreversible
structural
transformation
upon
operating,
which
results
in
poor
rate
long
cycle
reliability.
To
address
this
issue,
we
employed
boron
coordination
chemistry
to
manipulate
local
electronic
structure
prototype
P2-layered
K0.5Mn0.8Ni0.15B0.05O2
(KMNBO).
The
B
ions
with
electronegativity
reside
slabs
boost
layered
by
attracting
an
tendency
surrounding
oxygen,
upgrades
tolerance
during
repeated
K-ion
(de)intercalation
process.
sluggish
intrinsic
K+
could
be
simultaneously
alleviated
reducing
Coulomb
force
between
K
O.
This
study
breaks
stereotype
crystal
lattice
provides
new
insight
into
developing
long-durability
cathodes.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(13), P. 7202 - 7298
Published: Jan. 1, 2024
The
growing
global
energy
demand
necessitates
the
development
of
renewable
solutions
to
mitigate
greenhouse
gas
emissions
and
air
pollution.
To
efficiently
utilize
yet
intermittent
sources
such
as
solar
wind
power,
there
is
a
critical
need
for
large-scale
storage
systems
(EES)
with
high
electrochemical
performance.
While
lithium-ion
batteries
(LIBs)
have
been
successfully
used
EES,
surging
price,
coupled
limited
supply
crucial
metals
like
lithium
cobalt,
raised
concerns
about
future
sustainability.
In
this
context,
potassium-ion
(PIBs)
emerged
promising
alternatives
commercial
LIBs.
Leveraging
low
cost
potassium
resources,
abundant
natural
reserves,
similar
chemical
properties
potassium,
PIBs
exhibit
excellent
ion
transport
kinetics
in
electrolytes.
This
review
starts
from
fundamental
principles
structural
regulation
PIBs,
offering
comprehensive
overview
their
current
research
status.
It
covers
cathode
materials,
anode
electrolytes,
binders,
separators,
combining
insights
full
battery
performance,
degradation
mechanisms,
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(28)
Published: May 7, 2024
Alkali
metals
(e.g.
Li,
Na,
and
K)
multivalent
Zn,
Mg,
Ca,
Al)
have
become
star
anodes
for
developing
high-energy-density
rechargeable
batteries
due
to
their
high
theoretical
capacity
excellent
conductivity.
However,
the
inevitable
dendrites
unstable
interfaces
of
metal
pose
challenges
safety
stability
batteries.
To
address
these
issues,
covalent
organic
frameworks
(COFs),
as
emerging
materials,
been
widely
investigated
regular
porous
structure,
flexible
molecular
design,
specific
surface
area.
In
this
minireview,
we
summarize
research
progress
COFs
in
stabilizing
anodes.
First,
present
origins
delve
into
advantages
based
on
physical/chemical
properties
alkali
metals.
Then,
special
attention
has
paid
application
host
design
anodes,
artificial
solid
electrolyte
interfaces,
additives,
solid-state
electrolytes,
separator
modifications.
Finally,
a
new
perspective
is
provided
from
pore
modulation,
synthesis
COFs.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 29, 2024
Abstract
Since
the
electrochemical
de/intercalation
behavior
is
first
detected
in
1980,
layered
oxides
have
become
most
promising
cathode
material
for
alkali
metal‐ion
batteries
(Li
+
/Na
/K
;
AMIBs)
owing
to
their
facile
synthesis
and
excellent
theoretical
capacities.
However,
inherent
drawbacks
of
unstable
structural
evolution
sluggish
diffusion
kinetics
deteriorate
performance,
limiting
further
large‐scale
applications.
To
solve
these
issues,
novel
strategy
high
entropy
has
been
widely
applied
oxide
cathodes
AMIBs
recent
years.
Through
multielement
synergy
stabilization
effects,
high‐entropy
(HELOs)
can
achieve
adjustable
activity
enhanced
stability.
Herein,
basic
concepts,
design
principles,
methods
HELO
are
introduced
systematically.
Notably,
it
explores
detail
improvements
on
limitations
oxides,
highlighting
latest
advances
materials
field
AMIBs.
In
addition,
introduces
advanced
characterization
calculations
HELOs
proposes
potential
future
research
directions
optimization
strategies,
providing
inspiration
researchers
develop
areas
energy
storage
conversion.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(28)
Published: April 25, 2024
Abstract
The
interfacial
electric
field
(IEF)
in
the
heterostructure
can
accelerate
electron
transport
and
ion
migration,
thereby
enhancing
electrochemical
performance
of
potassium‐ion
batteries
(PIBs).
Nevertheless,
quantification
modulation
IEF
for
high‐efficiency
PIB
anodes
currently
remains
a
blank
slate.
Herein,
we
achieve
first
time
tuning
via
amorphous
carbon‐coated
undifferentiated
cobalt‐doped
FeSe/Fe
3
Se
4
(denoted
UN‐CoFe
5
/C)
efficient
potassium
storage.
Co
doping
increase
,
improving
transport,
promoting
adsorption
capacity,
lowering
diffusion
barrier.
As
expected,
magnitude
/C
is
experimentally
quantified
as
62.84
mV,
which
3.65
times
larger
than
that
(Fe
/C).
Benefiting
from
strong
IEF,
anode
exhibits
superior
rate
capability
(145.8
mAh
g
−1
at
10.0
A
)
long
cycle
lifespan
(capacity
retention
95.1
%
over
3000
cycles
1.0
).
Furthermore,
this
strategy
universally
regulate
CoSe
2
/Co
9
8
FeS
/Fe
7
S
heterostructures.
This
work
provide
fundamental
insights
into
design
advanced
electrodes.
Chemical Society Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
explores
the
latest
advancements
in
potassium
metal
batteries,
including
electrode
design,
interface
engineering,
and
electrolyte
optimization
to
suppress
dendrite
formation
enhance
cycling
stability.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Abstract
Single‐electron
transfer,
low
alkali
metal
contents,
and
large‐molecular
masses
limit
the
capacity
of
cathodes.
This
study
uses
a
cost‐effective
light‐molecular‐mass
orthosilicate
material,
K
2
FeSiO
4
,
with
high
initial
potassium
content,
as
cathode
for
potassium‐ion
batteries
to
enable
transfer
more
than
one
electron.
Despite
limited
valence
change
Fe
ions
during
cycling,
can
undergo
multiple
electron
transfers
via
successive
oxygen
anionic
redox
reactions
generate
reversible
capacity.
Although
formation
O‒O
dimers
in
occur
upon
removing
large
amounts
potassium,
strong
binding
effect
Si
on
O
mitigates
irreversible
release
voltage
degradation
cycling.
achieves
236
mAh
g
−1
at
50
mA
an
energy
density
520
Wh
kg
which
be
comparable
commercial
LiFePO
materials.
Moreover,
it
also
exhibits
1400
stable
cycles
under
high‐current
conditions.
These
findings
enhance
potential
commercialization
prospects
batteries.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
As
emerging
cutting-edge
energy
storage
technologies,
aqueous
zinc-ion
batteries
(AZIBs)
have
garnered
extensive
research
attention
for
its
high
safety,
low
cost,
abundant
raw
materials,
and,
eco-friendliness.
Nevertheless,
the
commercialization
of
AZIBs
is
mainly
limited
by
insufficient
development
cathode
materials.
Among
potential
candidates,
MXene-based
materials
stand
out
as
a
promising
option
their
unique
combination
hydrophilicity
and
conductivity.
However,
Zn2+
kinetics,
structural
instability,
narrow
interlayer
spacing
MXenes
hinder
practical
application.
Comprehensively
addressing
these
issues
remains
challenge.
Herein,
different
ion
pre-embedded
V2CTx
are
constructed
to
tune
spacing,
with
findings
showing
NH4
+
pre-intercalation
more
effective.
To
accelerate
it
proposed
first
time
zinc-philic
engineering
that
can
effectively
reduce
migration
barrier,
achieved
decorating
+-intercalated
(NH4-V2CTx)
ZnO
nanoparticles.
Various
analyses
theoretical
calculations
prove
there
strong
coupling
effect
between
V2CTx,
which
notably
boosts
reaction
kinetics
stability.
The
ZnO-decorated
NH4-V2CTx
exhibits
reversible
capacity
256.58
mAh
g-1
at
0.1
A
excellent
rate
capability
(173.07
2
g-1).
This
study
pioneers
strategy
modification
in
AZIBs.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 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.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(35)
Published: June 13, 2024
Abstract
Metal
hexacyanoferrates
(HCFs)
are
regarded
as
promising
cathode
materials
for
potassium‐ion
batteries
(PIBs)
on
account
of
their
low
cost
and
high
energy
density.
However,
the
difficult‐to‐remove
[Fe(CN)
6
]
vacancies
crystal
water
lead
to
structural
instability
capacity
deterioration
well
stereotype
poor
thermostability
conventional
HCFs.
Herein,
we
report
(100)
face‐oriented
potassium
magnesium
hexacyanoferrate
(KMgHCF)
nanoplates
with
crystallinity,
enabling
up
550
°C,
high‐temperature
carbon
coating
elimination.
The
as‐obtained
KMgHCF/C
exhibit
superior
storage
properties,
including
a
large
reversible
84.6
mAh
g
−1
,
voltage
plateau
3.87
V,
excellent
long‐term
cycling
performance
over
15000
cycles
rate
capability
at
5
A
.
unprecedented
stability
is
attributed
synergistic
effect
highly
two‐phase
reaction,
no
water,
specially
exposed
steady
surface,
protective
coating.
This
work
provides
new
material
selection
modification
strategy
practical
application
HCFs
in
PIBs.
