Chemical Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
For
sodium-ion
batteries,
solving
the
issue
of
short
cycle
life
is
key
to
their
large-scale
adoption
in
industry,
and
electrolyte
plays
an
important
role
on
this.
Herein,
this
work
aims
design
a
practical
sodium
ion
battery
with
industrial
application
value
introduces
anhydride
compounds
as
additives
for
first
time.
Meanwhile,
by
adjusting
solvent
composition
using
combination
ether
ester
solvents,
optimal
formulation
1
M
NaPF
Abstract
Hard
carbon,
the
Li‐free
anode
for
hybrid
Li‐ion/metal
batteries
(LIB/LMBs),
has
great
potential
enhancing
fast
charging
capability,
energy
density,
and
battery
lifespan.
However,
low
initial
Coulombic
efficiency
(ICE)
Li
dendrite
growth
are
crucial
factors
constraining
its
development.
In
this
work,
graphitized
layers
encapsulated
carbon
nanofibers
(G‐CF)
fabricated
via
Joule
heating
within
10
s.
The
C
sp2
structure
in
reduces
side
reactions
with
electrolyte,
promotes
LiC
compound
formation,
improves
ions/metal
reversibility.
inner
amorphous
boosts
capability.
As
a
result,
G‐CF
attains
an
85.2%
high
ICE
exhibits
long‐term
cycling
stability.
Under
2
charging,
it
maintains
average
of
99.94%
500
mAh
g
−1
capacity
after
200
cycles.
Moreover,
when
N/P
ratio
is
0.5,
G‐CF||NCM811full
cell
84.5%
provides
530.8
density
365.9
Wh
kg
at
1C.
G‐CF||LFP
full
can
also
provide
541.0
under
same
ratio.
A
30
pouch
stably
cycle
over
100
times.
This
heterogeneous
hard
design
paves
revolutionary
path
manufacturing
high‐efficiency
anodes
LIB/LMBs.
Angewandte Chemie,
Год журнала:
2025,
Номер
137(14)
Опубликована: Апрель 1, 2025
Abstract
Ultrahigh‐voltage
potassium‐ion
batteries
(PIBs)
with
cost
competitiveness
represent
a
viable
route
towards
high
energy
battery
systems.
Nevertheless,
rapid
capacity
decay
poor
Coulombic
efficiencies
remains
intractable,
mainly
attributed
to
interfacial
instability
from
aggressive
potassium
metal
anodes
and
cathodes.
Additionally,
reactivity
of
K
flammable
electrolytes
pose
severe
safety
hazards.
Herein,
weakly
solvating
fluorinated
electrolyte
intrinsically
nonflammable
feature
is
successfully
developed
enable
an
ultrahigh‐voltage
(up
5.5
V)
operation.
Through
breaking
the
anionic
solvation
barrier,
synergistic
modulation
can
be
achieved
by
formation
robust
anion‐derived
inorganic‐rich
electrode‐electrolyte
interfaces
on
both
cathode
anode.
As
proof
concept,
representative
KVPO
4
F
sustain
1600
cycles
84.4
%
retention
at
cutoff
voltage
4.95
V.
Meanwhile,
plating/stripping
process
in
our
designed
also
demonstrates
optimized
electrochemical
reversibility
stability
effectively
inhibited
dendrites.
These
findings
underscore
critical
impact
anion‐dominated
configuration
properties.
This
work
provides
new
insights
into
rational
design
safe
for
advanced
PIBs.
Results in Physics,
Год журнала:
2024,
Номер
62, С. 107838 - 107838
Опубликована: Июнь 17, 2024
Exceptional
category
of
alloys
comprising
five
or
more
alloying
metals
in
structures
are
referred
as
high
entropy
alloys.
Uniqueness
these
have
been
observed
due
to
the
combination
superior
mechanical,
thermal,
conducting,
anticorrosion,
and
other
physical
properties.
Unlike
traditional
metallic
(two
metals),
varying
elemental
compositions
led
limitless
potential
possibilities.
Recent
research
has
unveiled
an
important
opportunity
for
based
nanostructures
like
nanoparticles
nanocomposites.
This
state-of-the-art
review
is
basically
intended
highlight
design
essential
structure,
property,
applied
aspects
alloy
nanostructures.
Consequently,
various
notable
combinations
with
carbon
(graphene,
nanotube)
inorganic
surveyed.
In
this
context,
several
nanocomposite
designs
reported
using
efficient
techniques
thermal
shock,
flame
spray
pyrolysis,
plasma
spark
sintering,
mechanical
milling,
alloying,
electrochemical,
solution
name
a
few.
The
resulting
derived
nanomaterials
researched
microstructure,
nanocrystalline
different
features
(microhardness,
modulus,
stress–strain,
compression
properties),
wear,
range
on
pointed
towards
fields
energy
storage
(batteries
supercapacitors),
radiation
shielding,
corrosion/wear
coatings,
biomedical
uses.
Energy Material Advances,
Год журнала:
2024,
Номер
5
Опубликована: Янв. 1, 2024
As
the
world
enters
into
era
of
electrifying
transportation
for
cleaner
energy,
lithium-ion
battery
(LIB)-powered
electric
vehicles
have
drawn
great
attention
in
recent
years.
However,
fast-charging
capability
LIBs
has
long
been
regarded
as
technological
obstacle
to
wider
adoption
(BEVs)
market.
A
substantial
challenge
associated
with
fast
charging
is
formation
Li
plating
on
graphite
anode
it
major
contributor
side
reactions
during
cell
operations.
In
this
review,
fundamentals
and
corresponding
influencing
factors
(including
state
charge
[SOC],
current
density,
temperature,
N/P
ratio)
Li-ion
intercalation
process
are
first
elucidated
under
conditions.
Furthermore,
conventional
strategies
suppress
by
enhancing
ion
transport
kinetics
between
interface
electrode
through
engineering
electrolyte
design
also
summarized
analyzed.
Then,
innovative
achieving
ultrahigh
SOC
anodes
regulating
morphology
host
materials
construct
hybrid
storage
discussed
detail.
Two
types
compared
terms
performance,
simplicity,
safety
concerns.
Last,
we
highlight
some
research
orientations
perspectives
pertaining
development
storage,
providing
effective
approaches
address
issues
LIBs.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 6, 2024
Abstract
Fast‐charging
lithium‐ion
batteries
are
pivotal
in
overcoming
the
limitations
of
energy
storage
devices,
particularly
their
density.
There
is
a
burgeoning
interest
boosting
performance
through
enhanced
fast‐charging
capabilities.
However,
challenge
lies
developing
that
combine
high
rates,
long
cycle
life,
capacity,
and
safety.
This
review
emphasizes
importance
fundamentals
design
principles
fast
charging,
identifying
transport
ion/electron
within
electrodes/electrolytes'
bulk
phase
at
boundaries
as
crucial
rate‐limiting
steps
for
charging.
Such
ion
tunnel
regulation,
interfacial
modification,
defect
engineering
multiphase
systems,
various
optimization
strategies
improve
stable
exceptional
electrochemical
reaction
kinetics
electrodes.
Constructing
solid
electrolyte
interfaces
adjusting
solvation
structures
further
enhance
Li
+
diffusion
electrolytes.
The
critically
assesses
impacts
these
strategies,
suggesting
future
research
directions
insights
advancing
batteries.
It
anticipated
this
will
inspire
guide
systematic
evolution
technologies.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 22, 2024
Abstract
The
exceptional
thermal
stability
and
conductivity
of
lithium
bis(fluorosulfonyl)imide
(LiFSI)
have
made
it
a
preferred
salt
for
lithium‐ion
batteries
(LIBs).
However,
the
corrosion
aluminum
(Al)
current
collectors
by
LiFSI
at
low
potentials
(3.8
V
vs
Li/Li
+
)
poses
persistent
challenge,
hindering
application
in
4
V‐class
LIBs.
Herein,
2,2,2‐trifluoroethyl
methanesulfonate
(TFMS)
is
proposed
as
versatile
co‐solvent
to
address
issue
Al
collector
corrosion.
It
demonstrated
that
incorporating
TFMS
into
conventional
LiFSI‐based
carbonate
electrolyte
can
precisely
tailor
Li
solvation
structure
hydrogen
bonding
interactions
with
dimethyl
(DMC)
solvent.
This
weakens
coordination
between
DMC
while
increasing
participation
FSI
−
anions
primary
shell,
effectively
suppressing
caused
free
attacking.
Furthermore,
synergically
induce
formation
an
inorganic‐rich
compact
cathode
interphase,
significantly
avoiding
undesired
side
reactions.
As
result,
TFMS‐electrolyte
enables
1.2
Ah‐graphite||NCM811
(LiNi
0.8
Co
0.1
Mn
O
2
pouch‐cells
achieve
89.9%
capacity
retention
high
average
Coulombic
efficiency
>99.9%
200
cycles
cut‐off
voltage
4.4
V,
opening
up
opportunities
development
advanced
high‐voltage
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 30, 2024
Abstract
In
this
study,
a
novel
concept
of
multipoint
anionic
bridge
(MAB)
is
proposed
and
proved,
which
utilizes
anions
with
different
sites
to
connect
the
asymmetric
solvation
structure
(ASS).
Compared
usual
structures,
study
multifunctional
groups
difluoro(oxalate)borate
anion
(ODFB
−
),
can
Li
+
.
By
tailoring
concentration,
serves
as
between
solvated
structures.
The
electrolyte
investigated
through
in
situ
techniques
simulations
draw
correlations
structures
reaction
pathways.
design
demonstrates
remarkable
high‐temperature
performance
on
both
anode
cathode
sides,
enabling
stable
cycling
LCO||graphite
(0.5
Ah,
1.0
C)
pouch
cell
for
over
200
cycles
at
80
°C
facilitating
Li||MCMB
Li||LFP
cells
deliver
100
°C.
This
work
paves
way
development
high‐performance
systems
by
designing
using
new
construct
ASSs.
