Lithium-ion
batteries
(LIB)
are
extensively
utilized
across
industries
for
their
rechargeable
nature,
but
capacity
degradation
during
charge/discharge
cycling
poses
the
risk
of
battery
failure.
The
LiNi0.8Co0.1Mn0.1O2
(NCM811)
cathode
material
encounters
challenges
in
maintaining
high
and
performance
due
to
cation
mixing,
ion
migration,
electrolyte
chemical
reactions.
While
conventional
inorganic
coating
layer
offers
some
physical
protection,
it
is
susceptible
detachment.
We
introduce
organic
poly(acrylic
acid)
(PAA)
adhesive
polyvinylidene
fluoride
(PVDF)
cross-linked
form
a
composite
adhesive.
combination
PAA
PVDF
improves
viscosity
enhances
bonding
strength
material.
C=O
group
forms
coordination
bonds
with
transition
metals,
creating
coordinated
anchoring
effect
that
stability
structure.
reversible
exchange
between
H+
−COOH
Li+
promotes
lithium-ion
transport
at
electrode
interface,
enhancing
electrochemical
performance.
After
200
cycles,
retention
under
1C
conditions
reached
90.20%.
As
one
of
the
most
promising
positive
electrode
materials
for
power
batteries,
Ni-rich
layered
cathodes
have
recently
attracted
phenomenal
attention
due
to
their
high
energy
density
nature.
However,
suffer
from
severely
intrinsic
chemo-mechanical
instabilities
and
insufficient
service
life,
which
is
exacerbated
further
when
batteries
are
operated
at
a
voltage.
Here,
by
carefully
investigating
single
element
doping
chemistry,
targeted
strategy
that
combines
advantages
multiple
elements
proposed
suppress
strain
accumulation
during
electrochemical
cycling.
The
bulk
compatible
low-valence
(LVEs)
reduce
volumetric
stabilize
highly
delithiated
crystal
structure
through
doping.
high-valence
(HVEs)
regulate
growth
direction
primary
particles
form
radial
more
conducive
release.
result,
well-designed
deliver
excellent
structural
stability
with
capacity
retention
94.8%
1
C
after
200
cycles
within
2.7-4.5
V
(versus
Li/Li+)
in
half
cell
93.3%
500
3.0-4.25
graphite)
layer
full
cell.
This
work
provides
universal
suppressing
degradation
intercalation
electrodes
paves
way
next
generation
high-energy-density
cathodes.
Lithium-ion
batteries
(LIB)
are
extensively
utilized
across
industries
for
their
rechargeable
nature,
but
capacity
degradation
during
charge/discharge
cycling
poses
the
risk
of
battery
failure.
The
LiNi0.8Co0.1Mn0.1O2
(NCM811)
cathode
material
encounters
challenges
in
maintaining
high
and
performance
due
to
cation
mixing,
ion
migration,
electrolyte
chemical
reactions.
While
conventional
inorganic
coating
layer
offers
some
physical
protection,
it
is
susceptible
detachment.
We
introduce
organic
poly(acrylic
acid)
(PAA)
adhesive
polyvinylidene
fluoride
(PVDF)
cross-linked
form
a
composite
adhesive.
combination
PAA
PVDF
improves
viscosity
enhances
bonding
strength
material.
C=O
group
forms
coordination
bonds
with
transition
metals,
creating
coordinated
anchoring
effect
that
stability
structure.
reversible
exchange
between
H+
−COOH
Li+
promotes
lithium-ion
transport
at
electrode
interface,
enhancing
electrochemical
performance.
After
200
cycles,
retention
under
1C
conditions
reached
90.20%.
