National Science Review,
Journal Year:
2024,
Volume and Issue:
12(2)
Published: Dec. 3, 2024
ABSTRACT
In-situ
fabricated
polyether
electrolytes
have
been
regarded
as
one
of
the
most
promising
solid
electrolyte
systems.
Nevertheless,
they
cannot
match
high-voltage
cathodes
over
4.3
V
due
to
their
poor
oxidative
stability.
Herein,
we
propose
an
effective
local
charge
homogenization
strategy
based
on
triglycidyl
isocyanurate
(TGIC)
crosslinker,
achieving
ultra-high-voltage
electrochemical
stability
(viz.
PTIDOL)
at
cutoff
voltages
up
4.7
V.
The
introduction
TGIC
optimizes
Li+
solvation
environment,
thereby
homogenizing
distribution
ether
oxygen
(EO)
sites,
resulting
in
significantly
enhanced
main
chain.
Consequently,
Li|PTIDOL|LiNi0.6Co0.2Mn0.2O2
(NCM622)
cell
achieves
long-term
operation
ultra-high
voltage
with
a
capacity
retention
81.8%
after
400
cycles,
best
results
reported
for
date.
This
work
provides
significant
insights
development
tolerance
and
advancement
high-energy-density
batteries.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 24, 2024
Abstract
The
composite
gel
electrolyte
(CGE),
which
combines
the
advantages
of
inorganic
solid‐state
electrolytes
and
solid
polymer
electrolytes,
is
regarded
as
ultimate
candidate
for
constructing
batteries
with
high
safety
superior
electrode‐electrolyte
interface
contact.
However,
ubiquitous
agglomeration
nanofillers
results
in
low
filler
utilization,
seriously
reduces
structural
uniformity
ion
transport
efficiency,
thus
restricting
development
consistent
durable
batteries.
Herein,
a
solution‐processable
method
to
situ
construct
CGE
utilization
introduced.
homogeneous
metal–organic
framework
fillers
contribute
uniform
ionic
electronic
filed
distribution,
realizing
stable
interface.
Consequently,
achieves
an
ultra‐long
lifespan
10
000
cycles
capacity
retention
80.2%.
This
work
provides
guidance
high‐performance
CGEs
electrochemical
energy‐storage
devices.
National Science Review,
Journal Year:
2024,
Volume and Issue:
12(2)
Published: Dec. 3, 2024
ABSTRACT
In-situ
fabricated
polyether
electrolytes
have
been
regarded
as
one
of
the
most
promising
solid
electrolyte
systems.
Nevertheless,
they
cannot
match
high-voltage
cathodes
over
4.3
V
due
to
their
poor
oxidative
stability.
Herein,
we
propose
an
effective
local
charge
homogenization
strategy
based
on
triglycidyl
isocyanurate
(TGIC)
crosslinker,
achieving
ultra-high-voltage
electrochemical
stability
(viz.
PTIDOL)
at
cutoff
voltages
up
4.7
V.
The
introduction
TGIC
optimizes
Li+
solvation
environment,
thereby
homogenizing
distribution
ether
oxygen
(EO)
sites,
resulting
in
significantly
enhanced
main
chain.
Consequently,
Li|PTIDOL|LiNi0.6Co0.2Mn0.2O2
(NCM622)
cell
achieves
long-term
operation
ultra-high
voltage
with
a
capacity
retention
81.8%
after
400
cycles,
best
results
reported
for
date.
This
work
provides
significant
insights
development
tolerance
and
advancement
high-energy-density
batteries.
