Abstract
A
promising
anode
material
for
Li‐ion
batteries,
silicon
(Si)
suffers
from
volume
expansion‐induced
pulverization
and
solid
electrolyte
interface
(SEI)
instability.
Microscale
Si
with
high
tap
density
initial
Coulombic
efficiency
(ICE)
has
become
a
more
anticipated
choice,
but
it
will
exacerbate
the
above
issues.
In
this
work,
polymer
polyhedral
oligomeric
silsesquioxane‐lithium
bis
(allylmalonato)
borate
(PSLB)
is
constructed
by
in
situ
chelation
on
microscale
surfaces
via
click
chemistry.
This
polymerized
nanolayer
an
“organic/inorganic
hybrid
flexible
cross‐linking”
structure
that
can
accommodate
change
of
Si.
Under
stable
framework
formed
PSLB,
large
number
oxide
anions
chain
segment
preferentially
adsorb
LiPF
6
further
induce
integration
inorganic‐rich,
dense
SEI,
which
improves
mechanical
stability
SEI
provides
accelerated
kinetics
Li
+
transfer.
Therefore,
Si4@PSLB
exhibits
significantly
enhanced
long‐cycle
performance.
After
300
cycles
at
1
g
−1
,
still
provide
specific
capacity
1083
mAh
.
Cathode‐coupled
LiNi
0.9
Co
0.05
Mn
O
2
(NCM90)
full
cell
retains
80.8%
its
after
150
0.5
C.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(38)
Опубликована: Июль 20, 2023
Extraction
and
recovery
of
lithium
from
reserves
play
a
critical
role
in
the
sustainable
development
energy
due
to
explosive
growth
lithium-battery
market.
However,
low
efficiency
extraction
seriously
threatens
sustainability
supply.
In
this
contribution,
we
fabricate
novel
mechanically
robust
fluorine-rich
hydrogel,
showing
highly
efficient
Li+
Li-containing
solutions.
The
hydrogel
was
facilely
fabricated
by
simple
one-pot
polymerization
supramolecular
nanosheets
fluorinated
monomers,
acrylic
acid
small
amount
chemical
crosslinkers.
exhibits
remarkable
adsorption
capacity
(Qm
=122.3
mg
g-1
)
can
be
reused.
Moreover,
it
exclusively
extract
ions
multiple
co-existing
metal
ions.
Notably,
separation
/Na+
actual
wastewater
is
achieved
with
surprising
factor
153.72.
detailed
characterizations
as
well
calculation
showed
that
specific
coordination
Li-F
plays
central
for
both
striking
capability
selectivity
.
Furthermore,
an
artificial
device
constructed,
displaying
high
extracting
various
complex
lithium-containing
wastewater.
This
work
provides
new
promising
avenue
resource
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(44)
Опубликована: Окт. 17, 2023
Abstract
Currently,
the
concept
of
direct
regeneration
has
garnered
considerable
attention
from
public
due
to
its
minimal
environmental
impact,
high
economic
value,
and
stable
performance
recycled
materials.
In
this
study,
an
organic
lithium
salt‐assisted
eutectic
salts
(OAER)
is
proposed
for
replenishing
in
extremely
low
state
health
Ni‐rich
cathode
(Low
SOH
NCM).
The
OAER
method
capitalizes
on
favorable
inherent
properties
salts;
moreover,
reactions
salt
create
oxidation
environment
vacancies.
By
employing
OAER,
Low
NCM
are
able
be
recovered,
which
originally
a
capacity
only
46.8
mAh
g
−1
,
155.5
with
retention
95.6%
after
100
cycles.
Notably,
substantially
higher
than
that
achieved
through
conventional
purely
methods
even
slightly
surpasses
current
commercial
material.
Considering
benefits
approach,
it
demonstrates
potential
exhibits
competitiveness
industrial
applications.
Angewandte Chemie,
Год журнала:
2023,
Номер
135(38)
Опубликована: Июль 20, 2023
Abstract
Extraction
and
recovery
of
lithium
from
reserves
play
a
critical
role
in
the
sustainable
development
energy
due
to
explosive
growth
lithium‐battery
market.
However,
low
efficiency
extraction
seriously
threatens
sustainability
supply.
In
this
contribution,
we
fabricate
novel
mechanically
robust
fluorine‐rich
hydrogel,
showing
highly
efficient
Li
+
Li‐containing
solutions.
The
hydrogel
was
facilely
fabricated
by
simple
one‐pot
polymerization
supramolecular
nanosheets
fluorinated
monomers,
acrylic
acid
small
amount
chemical
crosslinkers.
exhibits
remarkable
adsorption
capacity
(Q
m
=122.3
mg
g
−1
)
can
be
reused.
Moreover,
it
exclusively
extract
ions
multiple
co‐existing
metal
ions.
Notably,
separation
/Na
actual
wastewater
is
achieved
with
surprising
factor
153.72.
detailed
characterizations
as
well
calculation
showed
that
specific
coordination
Li−F
plays
central
for
both
striking
capability
selectivity
.
Furthermore,
an
artificial
device
constructed,
displaying
high
extracting
various
complex
lithium‐containing
wastewater.
This
work
provides
new
promising
avenue
resource
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июль 24, 2024
Abstract
Effective
recycling
of
end-of-life
Li-ion
batteries
(LIBs)
is
essential
due
to
continuous
accumulation
battery
waste
and
gradual
depletion
metal
resources.
The
present
closed-loop
solutions
include
destructive
conversion
compounds,
by
destroying
the
entire
three-dimensional
morphology
cathode
through
thermal
treatment
or
harsh
wet
extraction
methods,
direct
regeneration
lithium
replenishment.
Here,
we
report
a
solvent-
water-free
flash
Joule
heating
(FJH)
method
combined
with
magnetic
separation
restore
fresh
cathodes
from
cathodes,
followed
solid-state
relithiation.
process
called
recycling.
This
FJH
exhibits
merits
milliseconds
duration
high
recovery
yields
~98%.
After
FJH,
reveal
intact
core
structures
hierarchical
features,
implying
feasibility
their
reconstituting
into
new
cathodes.
Relithiated
are
further
used
in
LIBs,
show
good
electrochemical
performance,
comparable
commercial
counterparts.
Life-cycle-analysis
highlights
that
has
higher
environmental
economic
benefits
over
traditional
processes.
Cell Reports Physical Science,
Год журнала:
2024,
Номер
5(1), С. 101763 - 101763
Опубликована: Янв. 1, 2024
Data-driven
methods
for
lithium-ion
battery
state-of-health
(SoH)
estimation
gain
attention
their
ability
to
avoid
acquiring
prior
mechanism
knowledge.
However,
most
existing
require
massive
labeled
data,
unsuitable
dynamic
conditions
in
the
real
world.
In
this
study,
extracting
features
from
discharge
profiles
with
a
small
amount
of
regularly
calibrated
data
(1.5%–15%
labeled)
is
used
capacity
estimation.
A
semi-supervised
deep-learning
method
based
on
bidirectional
gate
recurrent
unit
(biGRU)
and
structured
kernel
interpolation
(SKI)
Gaussian
process
regression
(GPR)
proposed
by
employing
three
features:
current
rate,
pseudo-differential
voltage,
temperature.
The
error
NASA
randomized
usage
dataset
below
1.91%
root-mean-square
percentage
(RMSPE).
verified
different
random
datasets
RMSPE
2.49%
3.24%.
It
provides
feasibility
using
SoH
electric
vehicle
applications.
