Pulse Current-Induced Homogeneous Phase Nucleation for High-Performance Conversion-Type Cathodes
Chuntao Ma,
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Yuhao Ma,
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Shuai Li
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et al.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 5, 2025
Conversion-type
transition
metal-based
materials
(MZx)
are
considered
promising
cathodes
for
lithium
metal
batteries
due
to
their
low
cost,
abundant
availability,
and
high
theoretical
energy
density.
However,
they
suffer
from
rapid
capacity
decay
caused
by
the
transformation
into
two
inhomogeneous
phases
during
discharge.
Herein,
we
use
a
pulse
current
discharge
activation
method
(under
3C)
induce
homogeneous
phase
nucleations.
As
result,
microsized
FeS2
cathode
transforms
mixture
of
nanosized
Fe
Li2S,
effectively
mitigating
volume
expansion.
It
exhibits
exceptional
cycling
performance,
delivering
specific
572.8
mAh
g–1
after
800
cycles
at
0.33C.
Even
areal
5.4
cm–2,
it
undergoes
180
with
retention
89.3%
This
work
highlights
crucial
role
nucleation
in
achieving
long
life
conversion-type
cathodes.
Language: Английский
A Low-Strain Lithium Cathode Material Li2–2xFe1+xCl4 for Halide-Based All-Solid-State Batteries
Dezhao Peng,
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Rui Li,
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Kaiqi Xu
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et al.
ACS Energy Letters,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1421 - 1429
Published: Feb. 27, 2025
Recent Advances in Nanostructured Conversion-Type Cathodes: Fluorides and Sulfides
Mobinul Islam,
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Md. Shahriar Ahmed,
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Sua Yun
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et al.
Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(6), P. 420 - 420
Published: March 8, 2025
This
review
paper
explores
the
emerging
field
of
conversion
cathode
materials,
which
hold
significant
promises
for
advancing
performance
lithium-ion
(LIBs)
and
lithium–sulfur
batteries
(LSBs).
Traditional
materials
LIBs,
such
as
lithium
cobalt
oxide,
have
reached
their
limits
in
terms
energy
density
capacity,
driving
search
alternatives
that
can
meet
increasing
demands
modern
technology,
including
electric
vehicles
renewable
systems.
Conversion
cathodes
operate
through
a
mechanism
involving
complete
redox
reactions,
transforming
into
different
phases,
enables
storage
more
ions
results
higher
theoretical
capacities
compared
to
conventional
intercalation
materials.
study
examines
various
metal
oxides,
sulfides,
fluorides,
highlighting
potential
significantly
enhance
density.
Despite
advantages,
face
numerous
challenges,
poor
conductivity,
volume
changes
during
cycling,
issues
with
reversibility
stability.
discusses
current
nanoengineering
strategies
employed
address
these
nano
structuring,
composite
formulation,
electrolyte
optimization.
By
assessing
recent
research
developments
this
aims
provide
comprehensive
overview
revolutionize
contribute
future
solutions.
Language: Английский