We
introduce
an
innovative
optical
measuring
device
based
on
laser-induced
breakdown
spectroscopy
(LIBS)
for
the
quantitative
analysis
of
Li
in
geothermal
brines
extraction.
LIBS
allows
contactless
and
in-situ
monitoring
dissolved
Li.
In
presented
technique,
we
induce
plasma
surface
artificial
high
saline
fluids
under
flow.
utilize
a
nanosecond
Nd:
YAG
laser
operating
at
1064
nm
wavelength
6
ns
pulse
duration.
The
energy
is
set
to
26
mJ.
For
each
sample,
perform
50
shots
repetition
rate
1
Hz,
acquired
spectra
are
averaged.
By
carefully
selecting
parameters
our
system,
achieve
efficient
measurements
liquid
surface,
minimizing
common
phenomena
such
as
splashes,
bubbles,
or
ripples.
calibrate
system
using
samples
over
wide
range
from
approximately
10
1300
mg/L,
I
line
670.8
nm,
derive
calibration
curve
exhibiting
R2
value
99.98
%.
Our
implementation
flowing
fluid
coupled
with
enables
accurate
quantification
average
relative
uncertainty
less
than
2
precision
measurements,
compared
reference
values
obtained
ICP-OES,
high,
percentage
difference
ranging
0.1
%
7
findings
demonstrate
precise
fluids.
achieved
through
combined
fast,
contactless,
capabilities
LIBS,
paves
way
its
integration
into
extraction
facilities
power
plants.
Carbon Neutralization,
Год журнала:
2025,
Номер
4(1)
Опубликована: Янв. 1, 2025
ABSTRACT
The
growing
use
of
lithium
iron
phosphate
(LFP)
batteries
has
raised
concerns
about
their
environmental
impact
and
recycling
challenges,
particularly
the
recovery
Li.
Here,
we
propose
a
new
strategy
for
priority
Li
precise
separation
Fe
P
from
spent
LFP
cathode
materials
via
H
2
O‐based
deep
eutectic
solvents
(DESs).
Through
adjusting
form
metal
complexes
precipitation
mode,
above
99.95%
can
be
dissolved
in
choline
chloride‐anhydrous
oxalic
acid‐water
(ChCl‐OA‐H
O)
DES,
high
efficiency
93.41%
97.40%
accordingly
are
obtained.
effects
main
parameters
comprehensively
investigated
during
leaching
processes.
mechanism
pretreated
is
clarified
rate‐controlling
step
heterogeneous
dissolution
reactions
also
identified.
Results
show
that
soluble
phases
3
(PO
4
)
O
formed
after
roasting
pretreatment,
Li(I)
ions
tend
to
C
precipitates
with
2−
process
so
recovered
preferentially
purity
99.82%.
After
UV‐visible
light
irradiation,
Fe(III)
converted
into
Fe(II)
ions,
which
react
FeC
by
content,
as
Na
PO
∙12H
(99.98%
purity).
Additionally,
plan
used
DES
proposed
performances
still
maintain
stable
three
circles.
method
offers
an
approach
simple
process,
efficiency,
waste‐free
DESs.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 6, 2024
Abstract
Electrodes
are
vital
for
lithium‐ion
battery
performance.
The
primary
method
large‐scale
electrode
production
involves
wet
slurry
casting
methods,
which
encounter
challenges
related
to
solvent
usage,
energy
consumption,
and
mechanical
stability.
Dry
processed
(DP)
electrodes
a
promising
alternative
but
struggle
with
rate
capability
properties.
Here,
an
approach
of
incorporating
1
wt.%
flour
into
DP
(DP–1%F)
through
binder
fibrillation
strategy
is
introduced,
enhances
the
strength,
performance,
cycling
stability
electrodes.
cross‐linking
protein
starch
in
flour,
along
Polytetrafluoroethylene
(PTFE),
enable
DP–1%F
exhibit
robust
properties
high
flexibility.
Additionally,
incorporation
makes
primarily
create
large
pores,
reducing
tortuosity,
thereby
endowing
improved
kinetic
behavior.
behavior
suppress
development
irreversible
phase
transitions
intragranular/intergranular
cracks.
These
characteristics
led
superior
capacity
retention
80.3%
after
260
cycles
at
2C
4.5
V
(LiNi
0.8
Co
0.1
Mn
O
2
).
findings
offer
valuable
insights
high‐power,
long‐life
electrodes,
addressing
key
batteries.
