AIChE Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 24, 2024
Abstract
A
novel
phospho‐based
hydrophobic
deep
eutectic
solvents
(HDESs)
is
proposed
to
selectively
extract
valuable
metals
from
waste
lithium‐ion
batteries
(LIBs).
Under
the
optimized
extraction
conditions,
single‐stage
efficiency
of
HDES
[TOP][Lid]
for
Co
2+
and
Ni
were
98.5%
83.9%,
[TBP][Lid]
96.0%
82.9%,
Li
+
was
enriched
in
extract.
FT‐IR,
1
H
NMR,
ESP
analysis
confirmed
hydrogen
bond
between
HBD
HBA.
The
metal
ion
mechanism
by
HDESs
analyzed
based
on
quantum
chemistry
(QC)
molecular
dynamics
(MD).
at
level
that
electrostatic
coordination
interactions
transition
ions
dominate
(Co
).
interaction
intensity
with
stronger
than
HDESs.
RSC Sustainability,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
An
integrated
CO
2
capture
and
conversion
system
utilizing
metal
hydroxide
salts
has
been
developed
to
from
various
sources
including
air
in
the
form
of
carbonate
convert
them
directly
into
a
synthetic
fuel;
methane.
Developing
an
effective
recycling
process
for
reclaiming
valuable
metals
from
lithium-ion
batteries
is
urgent
issue
owing
to
increasing
battery
waste
electric
vehicles.
In
this
study,
we
developed
a
leaching
method
that
enables
the
direct
separation
of
lithium
other
critical
metals,
namely,
nickel
and
cobalt,
using
two-phase
system
consists
deep
eutectic
solvent
(DES)
water.
The
DES
consisting
4,4,4-trifluoro-1-phenyl-1,3-butadione
tri-n-octylphosphine
oxide
showed
highest
performance
when
combined
with
Several
operational
parameters,
such
as
aqueous
fraction,
solid-liquid
ratio,
reaction
time,
operation
temperature,
were
evaluated.
optimum
results
in
obtained
1:1
DES-water
ratio
10
g/L
reacted
at
80
°C
24
h.
An
in-situ
stripping
phenomenon
was
observed,
revealing
transferred
phase
phase.
application
black
mass
leaching,
significantly
enhanced
Co,
Ni,
Mn
extraction
into
thus
plays
important
role
separating
metals.
efficiency
reached
99%
within
Journal of Chemical Theory and Computation,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 3, 2024
The
lithium–oxygen
(Li–O2)
battery,
renowned
for
its
exceptionally
high
theoretical
energy
density,
is
poised
to
revolutionize
next-generation
storage
systems.
However,
practical
application
depends
on
overcoming
several
challenges,
particularly
the
cathode
overpotential,
which
significantly
diminishes
battery's
efficiency
and
durability.
This
study
delves
into
interactions
at
surface
during
oxygen
reduction
evolution
reactions
(ORR/OER),
extending
analysis
beyond
initial
reaction
stages
encompass
extensive
charge–discharge
process.
We
introduce
define
concepts
of
intrinsic
equilibrium
potential
demonstrating
that
these
critical
parameters
are
predominantly
influenced
by
growth
discharge
products,
rather
than
catalysts,
thereby
underscoring
inherent
properties
battery.
shift
in
focus
from
merely
enhancing
catalysts
understanding
leveraging
characteristics
battery
process
opens
new
avenues
optimizing
performance
large-scale
Li–O2
batteries.
Furthermore,
our
findings
indicate
broader
applications
other
metal–oxygen
systems,
paving
way
design
high-capacity,
high-efficiency
technologies.
