SSRN Electronic Journal,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Due
to
the
lack
of
adapted
competitive
recycling
methods,
Lithium-ion
Batteries
(LIB)
production
scraps
are
currently
treated
as
spent
batteries,
despite
their
significant
difference
in
characteristics.
However,
with
drastic
increase
LIB
and
consequently,
generation
scraps,
various
innovative
techniques
have
emerged
gained
attention,
aiming
offer
greener,
cheaper
more
direct
routes.
This
study
explores
a
novel
solvent-based
delamination
method
that
employs
mixture
triethyl
phosphate
(TEP),
acetone
carbon
dioxide
(CO2)
under
pressure
temperature,
for
positive
electrode
scraps.
The
influence
experimental
parameters
such
TEP
ratio,
time,
solvent
quantity
was
investigated
optimize
parameters.
optimized
conditions
achieve
full
within
15
minutes
120°C,
composed
75%
25%
(v/v),
concentration
1.5%
ratio
(w/w)
CO2
100
bar.
Subsequent
process,
active
material
LiNi0.6Mn0.2Co0.2O2
(NMC622)
easily
separated
from
current
collector,
enabling
comprehensive
characterization.
Meanwhile,
dissolved
polyvinylidene
difluoride
(PVDF)
could
be
recovered
by
precipitation
water
antisolvent.
A
in-depth
focus
on
electrochemically
revealed
its
chemical
composition,
crystal
structure,
microstructure
remained
preserved
throughout
process.
Ultimately,
electrochemical
performance
recycled
NMC622
closely
resembled
pristine
NMC622,
affirming
promising
potential
this
approach.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 25, 2025
Abstract
As
Sodium‐ion
battery
(SIB)
technology
progresses
toward
commercial
viability,
sustainable
end‐of‐life
(EOL)
management
is
critical.
Methods
for
recycling
key
components
such
as
hard
carbon
(HC),
a
negative
electrode
material,
remain
underexplored.
This
study
introduces
direct
and
efficient
approach
HC
from
production
scrap
EOL
cells
using
“ice‐stripping”
followed
by
low‐temperature
binder
negation
at
300
°C
under
nitrogen.
The
effects
of
temperature
on
structural
integrity
electrochemical
performance
are
comprehensively
characterized
XRD,
Wide‐Angle
X‐ray
Scattering
(WAXS),
XPS.
Heating
above
400
induces
irreversible
damage
to
HC's
graphene
layers
modifies
the
surfaces,
resulting
in
poor
performance.
However,
reclaimed
retains
near‐pristine
performance,
with
capacities
243
mAh
g⁻¹
(scrap)
228
after
50
cycles.
Full‐cell
configurations
demonstrates
robust
cycling
stability,
86%
89%
capacity
retention
200
cycles
derived
cells,
respectively.
work
highlights
potential
lower‐temperature,
enable
circular
economy
SIBs.
findings
set
benchmark
developing
methods
other
SIB
components.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(46), С. 31685 - 31716
Опубликована: Янв. 1, 2024
First
critical
review
paper
on
LIBs
direct
recycling
strategies,
covering
a
broader
scope
with
the
positive
electrode,
negative
and
electrolyte,
while
discussing
substantial
challenges
to
their
effective
implementation.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
With
global
lithium-ion
battery
(LIB)
production
on
the
rise,
scraps,
constituting
5
to
30
wt
%
of
total
manufacturing
output
are
expected
remain
a
major
waste
stream
until
at
least
2030.
These
scraps
present
significant
recycling
challenge,
necessitating
development
effective
and
sustainable
solutions.
In
this
study,
we
conduct
life
cycle
assessment
(LCA)
an
innovative
CO2-assisted
direct
process
for
LIB-positive
electrode
scraps.
Using
NMC622
(LiNi0.6Mn0.2Co0.2O2)
positive
material
as
case
paper
describes
environmental
benefits
impacts
recovery
with
compared
other
conventional
treatments
(incineration,
pyrometallurgy,
hydrometallurgy).
Lab-scale
modeling
identifies
energy
consumption
solvent
usage
key
hotspots.
A
scale-up
framework
is
applied
provide
valuable
insights
guide
emerging
technology.
Eco-design
strategies
benchmarking
indicate
that
has
potential
reduce
impacts;
however,
advancements
in
efficiency
rates
necessary
ensure
its
competitiveness
existing
methods
ability
meet
industry
quality
standards.
Journal of Materials Chemistry A,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
study
reveals
a
mechanical
upcycling
approach
combined
with
electrode
engineering
to
transform
carbon
nanofiber
and
polylactic
acid-based
3D
printing
waste
into
functional
components
for
sustainable
zinc–iodine
batteries.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 17, 2024
Workflow
of
the
direct
recycling
various
LNMO
electrode
scraps
through
three
distinct
separation
routes,
with
resulting
materials
used
directly
for
preparation
new
electrodes
no
need
re-synthesis
active
material.
