Cobalt Hexacyanoferrate Cathode with Stable Structure and Fast Kinetics for Aqueous Zinc-Ion Batteries
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Prussian
blue
analogues
(PBAs)
show
great
promise
as
cathode
candidates
for
aqueous
zinc-ion
batteries
thanks
to
their
high
operating
voltage,
open-framework
structure,
and
low
cost.
However,
suffering
from
numerous
vacancies
crystal
water,
the
electrochemical
performance
of
PBAs
remains
unsatisfactory,
with
limited
capacity
poor
cycle
life.
Here,
a
simple
coprecipitation
method
is
shown
synthesize
well-crystallized
cobalt
hexacyanoferrate
(CoHCF)
small
amount
water
specific
surface
area.
Benefitting
two
redox-active
sites,
CoHCF
could
deliver
104.6
mA
h
g-1
at
0.02
A
72
1
g-1,
good
retention
92.4%
after
300
cycles
0.5
g-1.
Several
kinetic
tests
indicate
that
reaction
dominated
by
capacitive
behavior
diffusion
coefficient
Zn2+
ions
approximately
10-9
cm2
s-1.
Furthermore,
ex-situ
XRD
indicated
reversible
insertion/extraction
without
any
phase
transition.
Язык: Английский
Cobalt Oxide-Doped Laser-Induced Graphene on Copper Current Collectors for Anode-Free Lithium Metal Batteries
Electrochimica Acta,
Год журнала:
2025,
Номер
unknown, С. 146109 - 146109
Опубликована: Март 1, 2025
Язык: Английский
Breaking Boundaries: Advancing Trisulfur Radical-Mediated Catalysis for High-Performance Lithium–Sulfur Batteries
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Апрель 11, 2025
Abstract
Lithium–sulfur
batteries
(LSBs)
have
attracted
significant
attention
due
to
their
high
theoretical
energy
density
and
low-cost
raw
materials.
However,
LSBs
still
face
various
challenges
in
practical
applications,
particularly
the
shuttle
effect,
electrode
passivation,
slow
kinetics.
In
recent
years,
trisulfur
radicals
(TRs),
important
intermediates
LSBs,
emerged
as
a
promising
beyond-traditional
solution
these
problems,
which
serves
mediated
catalyst
improve
electrochemical
performance
of
LSBs.
As
system
that
is
inconsistent
with
catalytic
conversion
process
discussed
traditional
this
review
focuses
on
generation,
detection,
promotion,
roles
TRs,
especially
emphasizing
formation
TRs
solid-state
lapis
lazuli
analogs
discussing
pros
cons
donor
number
solvents
and/or
co-solvents
stabilizing
TRs.
Strategies
involving
homogeneous/heterogeneous
catalysts
are
for
increment
enhancing
reactions
Ultimately,
given
TRs’
potential
key
factor
future
perspectives
outlooks
provided
guide
further
development
This
provides
valuable
insights
into
design
electrolytes
paving
new
direction
way
advanced
Язык: Английский
Nanocrystalline iron phosphide as polysulfide filter and bifunctional catalyst for increasing capacity of lithium sulfur batteries
Journal of Power Sources,
Год журнала:
2025,
Номер
647, С. 237326 - 237326
Опубликована: Май 16, 2025
Язык: Английский
A Comparison Study on the Constructed Polypyrrole Coating and Polypyrrole-Derived Carbon Coating for the Electrochemical Performance of the Iron Difluoride Cathode
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 23, 2025
FeF2
is
considered
a
high-capacity
conversion
cathode
for
next-generation
lithium-ion
batteries
due
to
its
high
energy
density.
However,
struggles
with
poor
electronic
conductivity,
slow
reaction
kinetics,
and
serious
interfacial
side
reactions,
leading
rapid
cell
degradation
during
cycling.
In
this
study,
vapor
self-polymerization
method
employed
fabricate
polypyrrole
(PPy)
coating
on
FeF2,
which
acts
as
an
artificial
electrolyte
interface
improved
ionic
conductivities.
Additionally,
the
PPy-derived
carbon
also
prepared,
systematic
comparison
study
of
these
two
coatings
conducted.
The
has
higher
conductivity
than
PPy
coating.
merging
coating,
followed
by
agglomeration
particles
carbonization
process,
hinders
transport
lithium
ions.
Consequently,
PPy-coated
positive
electrode
exhibits
better
cycling
capacity
retention
performance
owing
fast
diffusion
kinetics
low
voltage
hysteresis,
in
discharge
189.2
mAh
g-1
over
100
cycles
achieved.
This
work
provides
feasible
technology
conductive
polymer
metal
fluorides
offers
perspective
selection
materials
battery
applications.
Язык: Английский
Designing Amino Functionalized Titanium-Organic Framework on Separators Toward Sieving and Redistribution of Polysulfides in Lithium-Sulfur Batteries
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Май 26, 2025
Abstract
Shuttle
effect
of
polysulfides
overshadows
the
superiorities
lithium–sulfur
batteries.
Size–sieving
could
address
this
thorny
trouble
rely
on
size
differ
in
and
lithium
ions.
However,
clogged
pose
some
challenges
for
cathode
are
rarely
recycled
during
charging/discharging.
Herein,
an
amino
functionalized
titanium-organic
framework
is
designed
modifying
batteries
separator
to
aforementioned
challenges.
Wherein,
introduction
narrows
titanium–organic
pore
size,
enabling
functional
selectively
modulate
ions
migration
using
size-sieving
effect,
thereby
completely
suppressing
shuttle.
Furthermore,
blocked
will
be
adsorbed
surface
by
positively
charged
leveraging
electrostatic
adsorption,
ensuring
redistribute
reuse,
boosting
active
materials
utilization.
Significantly,
not
hindered
since
there
transfer
channels
formed
via
Lewis
acid–base
interaction
with
help
amino.
Combined
these
virtues,
modified
enjoy
ultralow
attenuation
rate
0.045%
per
cycle
over
1000
cycles
at
1.0C.
Electrostatic
adsorption
cover
deficiencies
existing
inhibition
shuttle
providing
fresh
insight
into
advancement
lithium-sulfur
Язык: Английский