From
the
perspectives
of
energy,
environment,
and
resource
management,
recovering
spent
lithium-ion
batteries
(LIBs)
is
crucial
to
achieving
sustainable
energy
utilization
fostering
development
a
green
economy.
This
paper
introduces
closed-loop
recovery
process
for
LIBs,
based
on
lithium
priority
extraction
strategy.
With
NaCl
as
an
assisted
molten
salt,
optimization
selective
Li
leaching
has
resulted
in
remarkable
efficiency
99.24%
guaranteed
that
rates
other
metals
remain
below
13%,
which
effectively
prioritizes
extraction.
Subsequently,
without
additional
reductants,
use
dilute
sulfuric
acid
alone
facilitates
over
97%
Ni,
Co,
Mn,
Li.
Furthermore,
CO2
employed
convert
99%
Li+
into
carbonate,
eliminating
need
precipitants.
The
direct
mixed
metal
sulfides
from
leachate
simplifies
subsequent
purification
processes.
Recovering
powder
residues
regenerate
graphite
reduces
wastage
residual
metals.
These
measures
enable
comprehensive
all
substances
within
process,
allowing
their
reuse
or
reduction
roasting.
approach
maximizes
added
value
recovered
materials
accomplishes
fully
enhancing
its
potential
industrial
applications.
Compared
existing
methods
reported
literature,
this
offers
more
environmentally
friendly
system
higher
profits.
Minerals,
Journal Year:
2024,
Volume and Issue:
14(11), P. 1120 - 1120
Published: Nov. 4, 2024
This
study
introduces
an
innovative
strategy
for
the
selective
leaching
of
lithium
from
spent
Li-ion
batteries.
Based
on
thermodynamic
assessments
and
exploiting
waste
eggshells
as
a
source
calcium
carbonate,
impressive
38%
was
dissolved
selectively
through
mechanical
milling
water
leaching,
outperforming
conventional
thermochemical
methods.
Afterwards,
hydrogen
peroxide-assisted
sulfuric
acid
also
implemented
to
solubilize
targeted
elements
(Mn,
Co,
Ni,
Li),
with
exceptional
99%
efficiency
in
Mn
removal
leachate
using
potassium
permanganate
pH
range
1.5
3.5.
Selective
separations
Co
Ni
were
then
facilitated
utilizing
CYANEX
272
n-heptane.
comprehensive
presents
promising
sustainable
avenue
effective
recovery
Li
associated
co-elements
From
the
perspectives
of
energy,
environment,
and
resource
management,
recovering
spent
lithium-ion
batteries
(LIBs)
is
crucial
to
achieving
sustainable
energy
utilization
fostering
development
a
green
economy.
This
paper
introduces
closed-loop
recovery
process
for
LIBs,
based
on
lithium
priority
extraction
strategy.
With
NaCl
as
an
assisted
molten
salt,
optimization
selective
Li
leaching
has
resulted
in
remarkable
efficiency
99.24%
guaranteed
that
rates
other
metals
remain
below
13%,
which
effectively
prioritizes
extraction.
Subsequently,
without
additional
reductants,
use
dilute
sulfuric
acid
alone
facilitates
over
97%
Ni,
Co,
Mn,
Li.
Furthermore,
CO2
employed
convert
99%
Li+
into
carbonate,
eliminating
need
precipitants.
The
direct
mixed
metal
sulfides
from
leachate
simplifies
subsequent
purification
processes.
Recovering
powder
residues
regenerate
graphite
reduces
wastage
residual
metals.
These
measures
enable
comprehensive
all
substances
within
process,
allowing
their
reuse
or
reduction
roasting.
approach
maximizes
added
value
recovered
materials
accomplishes
fully
enhancing
its
potential
industrial
applications.
Compared
existing
methods
reported
literature,
this
offers
more
environmentally
friendly
system
higher
profits.
