Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 2, 2024
Abstract
The
combination
of
high‐voltage
Ni‐rich
cathodes
and
high‐capacity
Si‐based
anodes
can
result
in
high
energy
density
for
next‐generation
batteries.
However,
the
practical
capacities
accesses
are
severely
hindered
by
unstable
electrode/electrolyte
interphases
(EEI)
irreversible
structural
degradation,
which
necessitates
efficient
additives
electrolyte
generating
stable
EEI.
Herein,
a
multifunctional
additive,
3‐Fluoro‐5‐(4,4,5,5‐tetramethyl‐1,3,2‐dioxaborolan‐2‐yl)picolinonitrile
(FTDP)
is
proposed
to
construct
robust
interfaces
at
both
cathodic
anodic
surface,
so
as
enhance
electrochemical
performance.
FTDP
preferentially
decomposed
form
B‐contained
cyano
(CN)
group‐rich
cathode
interphase
(CEI),
well
LiF‐,
Li
3
N‐rich
solid
(SEI),
simultaneously,
resulting
integrity
stability
electrodes.
Moreover,
FTDP‐derived
CEI
suppress
transition
metal
ions
dissolution,
further
facilitating
battery
cyclability.
multifunctionality
FTDP,
including
quenching
free
radicals,
alleviating
hydrolysis
LiPF
6
inhibiting
HF
generation,
thus
greatly
improving
interfacial
stability.
With
trace
addition
0.2
wt.%,
NCM811/Li
cell
be
performed
an
extreme
condition,
i.e.,
ultra‐high
voltage
(4.8
V),
temperature
(60
°C)
rate
(10C).
1.6
Ah
NCM811/SiO
x
pouch
delivers
capacity
retention
84.0%
after
300
cycles.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
By
anti-oxidative
electrolyte
solvent
regulation,
we
effectively
regulated
the
reaction
path
of
PF
6
−
anions
in
Helmholtz
plane
LCO/electrolyte
interface
at
4.6
V,
forming
a
robust
CEI
and
retaining
layered
structure
LCO
with
cycling.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(27), P. 17950 - 17957
Published: June 25, 2024
The
pursuit
of
high
energy
density
in
lithium
batteries
has
driven
the
development
efficient
electrodes
with
low
levels
inactive
components.
Herein,
a
facile
approach
involving
use
π-π
stacked
nigrosine@carbon
nanotube
nanocomposites
as
an
all-in-one
additive
for
LiFePO4
cathode
been
developed.
This
design
significantly
reduces
proportion
substances
within
cathode,
resulting
battery
that
exhibits
specific
capacity
143
mAh
g-1
at
1
C
rate
and
shows
commendable
cyclic
performance.
Furthermore,
elimination
rigid
current
collectors
endows
electrode
flexibility,
offering
avenues
future
wearable
storage
devices.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: March 12, 2025
Abstract
Elevating
the
upper
cutoff
voltage
to
4.6
V
could
effectively
increase
reversible
capacity
of
LiCoO
2
(LCO)
cathode,
whereas
irreversible
structural
transition,
unstable
electrode/electrolyte
interface
and
potentially
induced
safety
hazards
severely
hinder
its
industrial
application.
Building
a
robust
cathode/electrolyte
film
by
electrolyte
engineering
is
one
efficient
approaches
boost
performance
high-voltage
LCO
(HV-LCO);
however,
elusive
interfacial
chemistry
poses
substantial
challenges
rational
design
highly
compatible
electrolytes.
Herein,
we
propose
novel
strategy
screen
proper
solvents
based
on
two
factors:
highest
occupied
molecular
orbital
energy
level
absorption
energy.
Tris
(2,
2,
2-trifluoroethyl)
phosphate
determined
as
optimal
solvent,
whose
low
defluorination
barrier
significantly
promotes
construction
LiF-rich
layer
surface
LCO,
thereby
eventually
suppresses
phase
transition
enhances
Li
+
diffusion
kinetics.
The
rationally
designed
endows
graphite||HV-LCO
pouch
cells
with
long
cycle
life
(85.3%
retention
after
700
cycles),
wide-temperature
adaptability
(−
60–80
°C)
high
(pass
nail
penetration).
This
work
provides
new
insights
into
screening
constructing
stable
for
high-energy
lithium-ion
batteries.
Chemical Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 22, 2025
This
Review
explores
the
status
and
progress
made
over
past
decade
in
areas
of
raw
material
mining,
battery
materials
components
scale-up,
processing,
manufacturing.
While
substantial
advancements
have
been
achieved
understanding
materials,
transition
to
large-scale
manufacturing
introduces
scientific
challenges
that
must
be
addressed
from
multiple
perspectives.
Rather
than
focusing
on
new
discoveries
or
incremental
performance
improvements,
this
focuses
critical
issues
arise
highlights
importance
cost-oriented
fundamental
research
bridge
knowledge
gap
between
industrial
production.
Challenges
opportunities
integrating
machine
learning
(ML)
artificial
intelligence
(AI)
digitalize
process
eventually
realize
fully
autonomous
production
are
discussed.
The
review
also
emphasizes
pressing
need
for
workforce
development
meet
growing
demands
industry.
Potential
strategies
suggested
accelerating
current
future
technologies,
ensuring
is
equipped
with
necessary
skills
support
research,
development,
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 7, 2025
Abstract
Ultrahigh‐nickel
layered
oxide
cathodes
(≥90%
nickel)
possess
exceptionally
high
discharge
capacities,
which
can
significantly
improve
the
energy
density
of
lithium‐ion
batteries
and
alleviate
driving
range
anxiety
electric
vehicles.
However,
interfacial
reactivity
ultrahigh‐nickel
cathodes,
especially
detrimental
side
reactions
with
harmful
acidic
species
like
HF
in
electrolyte,
deteriorate
battery
interface
reduce
cycle
life,
hindering
their
practical
application.
In
this
study,
3‐isocyanatopropyltrimethoxysilane
(PTTS‐NCO)
is
introduced
as
electrolyte
additive,
effectively
scavenge
form
a
protective
surface
layer
at
electrode/electrolyte
interface,
thereby
enhancing
electrochemical
performance
(NCM90/Li).
Specifically,
most
effective
based
on
PTTS‐NCO
additive
maintain
70.3%
its
capacity
after
500
cycles
30
°C.
Even
under
cathode
loading
(3.0
mAh
cm
−2
),
it
retain
86.2%
300
cycles,
far
exceeding
base
battery.
Furthermore,
exhibits
good
harsh
high‐temperature
environment,
maintaining
over
retention
NCM90/Li
up
to
350
60
This
work
demonstrates
great
potential
multifunctional
siloxane
lithium
cathode.
