Advanced Functional Materials,
Год журнала:
2023,
Номер
34(6)
Опубликована: Окт. 25, 2023
Abstract
Captured
by
the
remarkable
environmental/economic
value,
recycling
spent
LiFePO
4
has
attracted
numerous
attention.
However,
restricted
diverse
failure
mechanisms
and
different
particle‐sizes/active‐sites,
strategies
still
suffer
from
uneven
repairing
results
poor
accessibility.
For
promoting
their
application
in
commercial
systems,
uniform
physical‐chemical
properties
are
urgent
for
regenerated
samples.
Herein,
tailoring
oxidation‐reduction
manners,
homogeneous
cathode
materials
can
be
prepared,
displaying
particle
size
restored
lattice.
The
capacity
of
as‐optimized
samples
kept
≈141.5
mAh
g
−1
at
1.0
C,
137
with
a
retention
92%
after
300
cycles
2.0
C.
After
Kg‐scale
experiments,
pouch
full‐cell
(LFP‐500
vs
recovered
graphite)
delivers
≈4200
capacity,
considerable
cycling
stability
(retention
96.83%,
500
loops).
Importantly,
detailed
mechanism
oxidation/reduction‐conditions
is
investigated,
especially
lattice
reconstitution
ions‐
diffusion
behaviors.
Supported
kinetic
analysis
DFT
calculations,
fascinating
LFP‐500
further
proved,
mainly
derived
accelerated
Li‐diffusion
Compared
to
traditional
recovering
oxidation/reduction
process
displays
low
cost,
energy‐consumption,
pollution,
accompanied
large‐scale
potential.
Given
this,
this
work
anticipated
illustrate
in‐depth
lattice‐reconstruction,
while
offering
significant
homogenized
regeneration.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(7)
Опубликована: Дек. 12, 2023
Abstract
The
development
of
high‐energy‐density
Li||LiCoO
2
batteries
is
severely
limited
by
the
instability
cathode
electrolyte
interphase
(CEI)
at
high
voltage
and
temperature.
Here
we
propose
a
mechanically
thermally
stable
CEI
designing
for
achieving
exceptional
performance
4.6
V
70
°C.
2,4,6‐tris(3,4,5‐trifluorophenyl)boroxin
(TTFPB)
as
additive
could
preferentially
enter
into
first
shell
structure
PF
6
−
solvation
be
decomposed
on
LiCoO
surface
low
oxidation
potential
to
generate
LiB
x
O
y
‐rich/LiF‐rich
CEI.
layer
effectively
maintained
integrity
provided
excellent
mechanical
thermal
stability
while
abundant
LiF
in
further
improved
homogeneity
Such
drastically
alleviated
crack
regeneration
irreversible
phase
transformation
cathode.
As
expected,
with
tailored
achieved
91.9
%
74.0
capacity
retention
after
200
150
cycles
4.7
V,
respectively.
Moreover,
such
also
delivered
an
unprecedented
high‐temperature
73.6
100
°C
V.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(26), С. 13889 - 13915
Опубликована: Янв. 1, 2023
Herein,
we
discuss
the
recent
advances
in
boosting
electrochemical
performance
of
LNMO.
Further
research
directions
LNMO
are
also
discussed,
such
as
machine
learning
and
AI-assisted
virtual
experiments,
providing
new
insight
for
development
cathodes.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(45)
Опубликована: Авг. 31, 2023
Abstract
Acetic
acid
(CH
3
COOH)
detection
with
high
selectivity
at
low
temperatures
is
significant
due
to
its
wide
applications
in
the
chemical,
medical,
and
catering
industries.
Chemiresistive
gas
sensors
based
on
metal
oxide
semiconductors
(MOSs)
are
widely
used
detecting
various
gases,
but
it
necessary
develop
MOSs
novel
nanostructures
enhance
gas‐sensing
performance.
Herein,
a
series
of
bismuth
subcarbonate
(Bi
2
O
CO
,
abbreviated
as
BCO)
microspheres
highly
permeable
lamellar
structure
tunable
Sn‐doping
ratios
(0–5
at%)
synthesized
by
controlling
kinetics
equilibrium
hydrothermal
reaction.
The
sensor
at%
Sn‐doped
BCO
exhibits
excellent
performances
toward
acetic
(10
ppm),
including
sensitivity
(
S
=
8.3),
fast
recovery
speed
s),
long‐term
stability
(over
30
days),
good
temperature
(150
°C).
unique
assembled
from
2D
nanosheets
rich
Sn
4+
doping‐induced
active
sites
mainly
responsible
for
enhanced
performances.
Moreover,
new
reaction
process
revealed
via
situ
diffuse
reflectance
infrared
transform
spectroscopy.
Density
functional
theory
calculations
indicate
that
has
higher
adsorption
energy
larger
charge
transfer
than
pristine
BCO.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(6)
Опубликована: Окт. 25, 2023
Abstract
Captured
by
the
remarkable
environmental/economic
value,
recycling
spent
LiFePO
4
has
attracted
numerous
attention.
However,
restricted
diverse
failure
mechanisms
and
different
particle‐sizes/active‐sites,
strategies
still
suffer
from
uneven
repairing
results
poor
accessibility.
For
promoting
their
application
in
commercial
systems,
uniform
physical‐chemical
properties
are
urgent
for
regenerated
samples.
Herein,
tailoring
oxidation‐reduction
manners,
homogeneous
cathode
materials
can
be
prepared,
displaying
particle
size
restored
lattice.
The
capacity
of
as‐optimized
samples
kept
≈141.5
mAh
g
−1
at
1.0
C,
137
with
a
retention
92%
after
300
cycles
2.0
C.
After
Kg‐scale
experiments,
pouch
full‐cell
(LFP‐500
vs
recovered
graphite)
delivers
≈4200
capacity,
considerable
cycling
stability
(retention
96.83%,
500
loops).
Importantly,
detailed
mechanism
oxidation/reduction‐conditions
is
investigated,
especially
lattice
reconstitution
ions‐
diffusion
behaviors.
Supported
kinetic
analysis
DFT
calculations,
fascinating
LFP‐500
further
proved,
mainly
derived
accelerated
Li‐diffusion
Compared
to
traditional
recovering
oxidation/reduction
process
displays
low
cost,
energy‐consumption,
pollution,
accompanied
large‐scale
potential.
Given
this,
this
work
anticipated
illustrate
in‐depth
lattice‐reconstruction,
while
offering
significant
homogenized
regeneration.
