Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 27, 2024
Abstract
Olivine‐type
LiFe
y
Mn
1−
PO
4
(LFMP)
is
a
promising
cathode
candidate
with
high
energy
density,
chemical
stability,
and
cost
efficiency.
However,
an
unidentified
anomalous
lithiation
plateau
(P
II)
often
emerges
between
the
2+
/Mn
3+
Fe
/Fe
redox
reactions,
leading
to
decrease
in
density.
Herein,
it
demonstrated
that
P
II
originates
from
couple,
yet
differs
classical
reaction
due
its
lower
operating
voltage.
During
lithiation,
Li
+
initially
accumulates
on
particle
surface,
forming
lithium‐rich
phase,
while
interior
remains
lithium‐poor
phase.
As
proceeds,
two‐phase
boundary
experiences
local
compressive
stress
counteracting
forces
during
expansion.
This
compresses
lattice,
thereby
lowering
voltage
of
inducing
formation
II.
Such
effect
exacerbated
by
increased
C‐rates
higher
Mn‐content.
Interestingly,
acts
as
double‐edged
sword
enhancing
diffusion
kinetics
mitigating
Jahn–Teller
distortion,
fully
unlocking
capacity
.
Furthermore,
particle‐size‐reduction
strategy
developed
address
II,
which
decreases
contribution
28.59%
7.77%
at
2
C.
These
findings
deepen
understanding
mechanisms
LFMP
offer
novel
insights
for
developing
high‐power/voltage
olivine‐type
cathodes.
RSC Sustainability,
Journal Year:
2024,
Volume and Issue:
2(7), P. 1969 - 1978
Published: Jan. 1, 2024
A
novel
precursor
phase
(Mn,
Fe)
5
(PO
4
)
2
(HPO
·4H
O
is
introduced
with
a
co-precipitation
reaction,
enabling
low-cost,
sustainable,
scalable
production
of
LMFP
cathodes
exhibiting
excellent
cycling
stability
good
tap
density.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Abstract
LiMn
2
O
4
and
LiFePO
materials
are
widely
applied
in
electric
vehicles
energy
storage.
Currently,
spent
recycling
is
challenged
by
long
process,
high
consumption,
poor
economy
due
to
the
indispensable
metal
separation
their
recycling.
Aiming
at
this
challenge,
an
upcycling
of
low‐value
cathode
high‐value
high‐voltage
lithium
ferromanganese
phosphate
(LMFP)
simple
leaching
hydrothermal
reaction
proposed,
LMFP
material
with
ultrahigh
rate
capability
reversibility
its
homogenized
element
distribution,
well‐defined
nanorods
particles,
short
Fe/Mn─O
bond
average
Li─O
length
regenerated.
The
initial
discharge
capacity
reaches
144.2
mAh
g
−1
87%
retention
after
1000
cycles
1
C.
Even
cycling
5
C,
a
136.9
86.4%
achieved
cycles.
Kinetics
analysis
characterizations
regenerated
further
reveal
fast
diffusion
ability
stable
structure.
This
work
sheds
light
on
potential
value
regeneration
offers
economic
strategy
for
materials.
Applied Surface Science Advances,
Journal Year:
2023,
Volume and Issue:
18, P. 100505 - 100505
Published: Nov. 25, 2023
LiMnPO4
cathode
material
and
its
derivatives
are
promising
for
energy-storage
devices
owing
to
environmental
friendliness,
high
energy
density,
structural
stability.
Olivine
is
attractive
due
operating
voltage
(4
5
V
vs.
Li+/Li),
strong
P-O
covalent
bond,
which
offers
many
safety
advantages.
Despite
these
advantages,
the
commercialization
of
LiMnPO4-based
lithium-ion
batteries
(LIB)
has
been
plagued
by
other
factors
such
as
poor
electronic
ionic
conductivity,
a
surface
barrier
Li-ion
diffusion,
degradation
induced
Jahn-Teller
effect.
Various
strategies,
including
transition
metal
doping
at
A-site
fabrication
heterostructures
with
electron
mobility,
have
employed
address
challenges.
Notably,
exceptional
electrode
performance
microrods
may
be
ascribed
their
distinct
three-dimensional
porous
hierarchical
structure,
promotes
rapid
Li+
transport
kinetics
improves
stability
in
reversible
electrochemical
reactions.
While
enhancement
techniques
centered
on
processing,
solid-state
chemistry
more
effective,
offering
convenience
overcoming
obstacles
related
physiochemical
performance.
The
synthesis
approach,
typically
known
capability
tailor
size
morphology
materials,
demonstrated
significant
impact
enhancing
activity
LiMnPO4.
This
review
critically
discusses
structure
dependence
It
gives
broad
overview
research
approaches
being
enhance
through
technique.
also
provides
comprehensive
challenges
need
further
fully
realize
potential
cathodes
Li-Ion
batteries.
