Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 6, 2025
Abstract
The
lithium‐rich
manganese‐based
layered
oxide
(LRMO)
cathode
shows
grar
promise
for
high‐energy
density
and
environment‐friendly
batteries
due
to
its
cation
anion
redox.
However,
it
suffers
from
continuous
electrolyte
consumption
capacity
decay,
especially
at
high
mass
loadings
(>10
mg
cm
−2
).
Conventional
electrolyte/interphase
strategies
fail
address
the
structural
characteristics
of
LRMO,
limiting
practical
application.
Here,
we
reveal
specific
requirements
interphase
(CEI)
LRMO
accordingly
design
a
non‐fluorinated
additive,
2,4,6‐trivinyl‐2,4,6‐trimethylcyclotrisiloxane
(TVTMS).
TVTMS
could
form
crosslinked
hetero‐chain
polymeric
CEI
(CHP‐CEI)
through
ring‐opening
polymerization
ethylene
group
crosslinking,
offering
unique
balance
robustness,
flexibility,
mechanical
energy
dissipation,
which
not
be
achieved
by
conventional
additives.
Therefore,
cracking
cathode,
gas
release
transition
metal
dissolution
were
effectively
mitigated.
It
should
noted
that,
first
time
our
knowledge,
employed
single‐particle
aerosol
spectrometry
(SPAMS)
study
components,
organic/polymer
species.
Li|LRMO
cells
based
on
CHP‐CEI
display
lifespan
>825
cycles
with
remained
204
mAh
g
−1
high‐loading
(12
)
achieve
stable
cycling
>145
80%
retention,
surpasses
performance
previously
reported
electrolytes.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 21, 2025
Abstract
Li‐rich
Mn‐based
(LRM)
cathode
materials
are
considered
promising
candidates
for
next‐generation
lithium‐ion
batteries
due
to
their
high
specific
capacity
and
cost‐effectiveness.
However,
they
exhibit
deficiencies
in
volumetric
energy
density,
largely
attributable
lower
compaction
which
constrains
application
space‐limited
devices
such
as
electric
vehicles
portable
devices.
In
this
study,
(NH
4
)
2
S
O
8
surface
treatment
is
proposed
enhance
the
density
stability
performance
of
LRM
materials.
This
induces
formation
Li/O
vacancies
spinel
structure,
leading
an
increase
initial
Coulombic
efficiency
(ICE)
from
75.62%
89.07%,
well
discharge
214.2
266.01
mAh
g
−1
compared
with
untreated
sample.
Furthermore,
self‐grading
generated
by
crushing
particles
during
process,
results
enhancement
3.18
cm
−3
3145
Wh
L
,
significantly
surpassing
2487
commercial
The
present
work
provides
new
perspectives
development
density.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(48)
Published: Aug. 10, 2024
Abstract
Halide
solid
electrolytes
(SEs)
are
attracting
strong
attention
as
one
of
the
compelling
candidates
for
next‐generation
inorganic
SEs
due
to
their
high
ionic
conductivity.
Nevertheless,
unsatisfactory
high‐voltage
stability
restricts
further
applications
halide
SEs.
Herein,
anion‐engineering
F
−
/O
2−
is
evolved
construct
stable
zirconium‐based
superionic
conductors
(Li
2.5
ZrCl
5
0.5
O
,
LZCFO).
Benefiting
from
thermodynamic/kinetic
F‐containing
SE
and
disordered
localized
structure
introduced
by
LZCFO
displays
a
practical
electrochemical
limit
4.87
V
versus
Li/Li
+
an
conductivity
1.17
mS
cm
−1
at
30
°C.
With
NCM955,
all‐solid‐state
lithium
battery
exhibits
discharge
capacity
207.1
mAh
g
0.1C
retention
81.2%
after
500
cycles
0.5C.
The
interfacial
characterization
demonstrates
formation
F‐rich
cathode–electrolyte
interphase
(CEI),
which
inhibits
side
reactions
between
cathode
boosts
excellent
cycling
stability.
This
work
affords
fresh
insights
on
engineering
with
stability,
conductivity,
CEI
in
batteries.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 29, 2024
Solid-state
polymer
lithium
metal
batteries
are
an
important
strategy
for
achieving
high
safety
and
energy
density.
However,
the
issue
of
Li
dendrites
inherent
inferior
interface
greatly
restricts
practical
application.
Herein,
this
study
introduces
tris(2,2,2-trifluoroethyl)phosphate
solvent
with
moderate
solvation
ability,
which
can
not
only
complex
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(19)
Published: Jan. 9, 2024
Abstract
A
novel
electrolyte
additive,
3,
3‐trifluoropropylmethyldimethoxysilane
(TFPMDS),
is
first
proposed
to
modify
both
the
cathode
and
anode
of
lithium‐ion
batteries
at
same
time.
Charging/discharging
tests
demonstrate
that
with
1
wt%
TFPMDS
not
only
greatly
improves
capacity
retention
LiNi
0.5
Mn
1.5
O
4
(LNMO)//Li
cell
(29.6%→90.8%)
graphite//Li
(68.1%→98.3%),
but
also
successfully
ensures
long‐term
cycle
stability
LNMO//graphite
pouch
4.9
V.
Further
electrochemical
measurements
combining
spectroscopic
characterization
theoretical
calculations
indicate
additive
displays
three
principal
functions:
1)
Be
preferentially
oxidized
build
a
robust
interphase
(CEI)
enriched
in
F/Si
species
F‐rich
nature
strong
oxidation‐resistance.
2)
able
scavenge
hazardous
HF,
F
−
,
H
+
through
its
binding
these
thus
protect
LNMO
high‐voltage.
3)
adsorbed
on
graphite
surface
form
“framework”,
co‐construct
an
elastic
solid
(SEI)
after
reduction
ethylene
carbonate.
Importantly,
Si─O
group
within
especially
important
for
constructing
“molecular
bridge”
CEI/SEI
coupling
inorganic
organic
improve
compatibility,
stability,
elasticity.
EES batteries.,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
examines
electrochemical-mechanical
coupling
in
layered
oxide
cathodes,
linking
delithiation-induced
electrochemical
degradation
to
anisotropic
mechanical
strain,
while
summarizing
recent
advances
cathode
material
modifications.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
Phase
transition
serves
as
an
ordinary
behavior
occurring
during
the
high‐temperature
calcination
process,
while
it
becomes
quite
complicated
in
Li‐rich
materials
composed
of
rhombohedral
phase
LiTMO
2
(TM:
Ni,
Mn)
with
R
m
space
group
and
monoclinic
Li
TMO
3
C
2/
group.
Yet
to
be
firmly
elucidated
is
how
precursor
transforms
into
(
)‐Li
)
compound
what
precise
conversion
mechanism
between
these
two
phases.
This
work
systematically
elaborates
structural
evolution
Li/O
incorporation
calcination,
proposes
a
mechanism.
A
series
characterizations
on
rearrangement
detailed
analysis
provide
insights
comprehension
this
transition,
i.e.,
metal
(TM)
vacancies
induced
by
interlayer
TM
ions
migration
function
primary
reason
driving
transformation
from
.
offers
novel
concept
for
regulation
cathodes.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 25, 2025
Rechargeable
sodium-chlorine
(Na-Cl2)
batteries
show
great
promise
in
grid
energy
storage
applications
due
to
their
high
electrochemical
performance.
However,
the
use
of
highly
corrosive
thionyl
chloride
(SOCl2)-based
electrolytes
has
severely
hindered
real-world
applications.
Here
we
a
non-corrosive
ester
(methyl
dichloroacetate)
as
promising
alternative
SOCl2,
which
can
form
electrolyte
with
aluminum
and
sodium
bis(fluorosulfonyl)imide
for
high-performance
rechargeable
Na-Cl2
batteries.
The
resultant
battery
shows
reversible
capacity
up
1200
mAh
g−1
at
current
density
100
mA
calculated
based
on
mass
carbon
discharge
voltage
~2.5
V,
wide
temperature
range
from
−40
80
°C,
long-term
cycling
stability
700
cycles
outperforms
conventional
state-of-the-art
Na
metal
performance
safety
have
been
further
extended
fibre
batteries,
realize
wearable
Based
donor
number
charge
transfer
two
key
descriptors,
propose
design
principle
organic
fully
unlock
designability
sustainability
solvents
towards
practical
hold
but
face
challenges
(SOCl2)
electrolytes.
Here,
authors
introduce
an
alternative,
enabling
°C.
