Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
Boosting
energy
density
beyond
the
current
status
of
Li‐ion
batteries
is
actively
sought
after
yet
it
remains
very
challenging.
One
promising
pathway
toward
this
goal
development
defect‐free
high‐voltage
cathode
materials
via
novel
crystal
engineered
approaches.
In
response
to
demand,
present
study
focuses
on
synthesizing
LiCoPO
4
,
which
a
polyanionic
compound,
into
nearly
structure
and
preferential
orientation
grown
crystals
solvothermal
method
using
ethylene
glycol
(EG)
as
surface
control
medium.
Notably,
ab
initio
molecular
dynamics
simulations
functional
theory
calculations
elucidate
role
interfacial
variations
induced
by
EG
molecule
interaction
with
particular
facets
giving
rise
desired
growth
direction
in
comparison
hydrothermal
method.
addition
solvent
regulated
growth,
Argon‐annealing
alleviates
undesired
charge
transfer
resistance
eliminating
residue
further
reduces
anti‐site
defect
concentration,
thereby
engineering
essentially
highly
ordered
structure.
The
are
shown
possess
theoretical
full
discharge
capacity
(163.0
mAh
g
−1
774.7
Wh
kg
at
C/10)
superior
rate
capability
(151.6
716.9
1
C),
truly
unmatched
functionality
offering
new
design
possibilities.
Morphology
and
size
of
ternary
precursors
directly
influence
the
electrochemical
performance
final
cathode
materials.
Insights
into
growth
agglomeration
mechanisms
primary
particles
are
crucial
for
enhancing
precursor
performance.
This
work
aims
to
examine
effects
ammonia
concentration,
pH
values,
stirring
speed
on
growth,
agglomeration,
characteristics
Ni0.8Co0.1Mn0.1(OH)2
prepared
by
coprecipitation
method.
The
{010}
crystal
family
exposed
surface
secondary
heavily
influences
particles.
Primary
particle
increases
with
higher
lower
pH,
speed.
Higher
concentrations
lead
larger
a
narrower
span
tighter
agglomeration.
An
increased
value
leads
decreased
size,
broadened
span,
looser
average
decreases,
impact
tightness
is
limited
Dalton Transactions,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
The
migration
energy
barriers
of
lithium
ions
in
SiO
x
/Fe@C
were
analyzed
four
distinct
directions,
along
with
the
corresponding
lithium-ion
diffusion
sites.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
Boosting
energy
density
beyond
the
current
status
of
Li‐ion
batteries
is
actively
sought
after
yet
it
remains
very
challenging.
One
promising
pathway
toward
this
goal
development
defect‐free
high‐voltage
cathode
materials
via
novel
crystal
engineered
approaches.
In
response
to
demand,
present
study
focuses
on
synthesizing
LiCoPO
4
,
which
a
polyanionic
compound,
into
nearly
structure
and
preferential
orientation
grown
crystals
solvothermal
method
using
ethylene
glycol
(EG)
as
surface
control
medium.
Notably,
ab
initio
molecular
dynamics
simulations
functional
theory
calculations
elucidate
role
interfacial
variations
induced
by
EG
molecule
interaction
with
particular
facets
giving
rise
desired
growth
direction
in
comparison
hydrothermal
method.
addition
solvent
regulated
growth,
Argon‐annealing
alleviates
undesired
charge
transfer
resistance
eliminating
residue
further
reduces
anti‐site
defect
concentration,
thereby
engineering
essentially
highly
ordered
structure.
The
are
shown
possess
theoretical
full
discharge
capacity
(163.0
mAh
g
−1
774.7
Wh
kg
at
C/10)
superior
rate
capability
(151.6
716.9
1
C),
truly
unmatched
functionality
offering
new
design
possibilities.
