eScience,
Год журнала:
2023,
Номер
4(4), С. 100189 - 100189
Опубликована: Сен. 27, 2023
Lithium
metal
anodes
(LMAs)
have
been
considered
the
ultimate
anode
materials
for
next-generation
batteries.
However,
uncontrollable
lithium
dendrite
growth
and
huge
volume
expansion
that
can
occur
during
charge
discharge
seriously
hinder
practical
application
of
LMAs.
Metal–organic
framework
(MOF)
materials,
which
possess
merits
specific
surface
area,
excellent
porosity,
flexible
composition/structure
tunability,
demonstrated
great
potential
resolving
both
these
issues.
This
article
first
explores
mechanism
formation
as
described
by
four
influential
models.
Subsequently,
based
on
an
in-depth
understanding
models,
we
propose
strategies
utilizing
MOFs
their
derivatives
to
suppress
growth.
We
then
provide
a
comprehensive
review
research
progress
with
respect
various
applications
dendrites
inhibit
expansion.
The
paper
closes
discussion
perspectives
future
modifications
achieve
stable,
dendrite-free
Advanced Materials,
Год журнала:
2023,
Номер
36(4)
Опубликована: Сен. 1, 2023
Abstract
Lithium–sulfur
(Li–S)
batteries
stand
out
for
their
high
theoretical
specific
capacity
and
cost‐effectiveness.
However,
the
practical
implementation
of
Li–S
is
hindered
by
issues
such
as
shuttle
effect,
tardy
redox
kinetics,
dendrite
growth.
Herein,
an
appealingly
designed
covalent
organic
framework
(COF)
with
bi‐functional
active
sites
cyanide
groups
polysulfide
chains
(COF‐CN‐S)
developed
cooperative
functional
promoters
to
simultaneously
address
dendrites
effect
issues.
Combining
in
situ
techniques
calculations,
it
can
be
demonstrated
that
unique
chemical
architecture
COF‐CN‐S
capable
performing
following
functions:
1)
The
delivers
significantly
enhanced
Li
+
transport
capability
due
abundant
ion‐hopping
(cyano‐groups);
2)
functions
a
selective
ion
sieve
regulating
dynamic
behavior
anions
,
thus
inhibiting
growth;
3)
acting
mediator,
effectively
control
electrochemical
polysulfides
enhance
conversion
kinetics.
Based
on
above
advantages,
endows
excellent
performance.
This
study
highlights
significance
interface
modification
offers
novel
insights
into
rational
design
materials
realm.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(37)
Опубликована: Июль 25, 2023
Despite
the
enormous
interest
in
Li
metal
as
an
ideal
anode
material,
uncontrollable
dendrite
growth
and
unstable
solid
electrolyte
interphase
have
plagued
its
practical
application.
These
limitations
can
be
attributed
to
sluggish
uneven
Li+
migration
towards
surface.
Here,
we
report
olefin-linked
covalent
organic
frameworks
(COFs)
with
electronegative
channels
for
facilitating
selective
transport.
The
triazine
rings
fluorinated
groups
of
COFs
are
introduced
electron-rich
sites
capable
enhancing
salt
dissociation
guiding
uniform
flux
within
channels,
resulting
a
high
transference
number
(0.85)
ionic
conductivity
(1.78
mS
cm-1
).
mixed
polymeric
binder
form
matrix
membranes.
membranes
enable
reliable
plating/stripping
cyclability
over
700
h
Li/Li
symmetric
cells
stable
capacity
retention
Li/LiFePO4
cells,
demonstrating
potential
viable
cationic
highway
accelerating
conduction.
eScience,
Год журнала:
2023,
Номер
4(4), С. 100189 - 100189
Опубликована: Сен. 27, 2023
Lithium
metal
anodes
(LMAs)
have
been
considered
the
ultimate
anode
materials
for
next-generation
batteries.
However,
uncontrollable
lithium
dendrite
growth
and
huge
volume
expansion
that
can
occur
during
charge
discharge
seriously
hinder
practical
application
of
LMAs.
Metal–organic
framework
(MOF)
materials,
which
possess
merits
specific
surface
area,
excellent
porosity,
flexible
composition/structure
tunability,
demonstrated
great
potential
resolving
both
these
issues.
This
article
first
explores
mechanism
formation
as
described
by
four
influential
models.
Subsequently,
based
on
an
in-depth
understanding
models,
we
propose
strategies
utilizing
MOFs
their
derivatives
to
suppress
growth.
We
then
provide
a
comprehensive
review
research
progress
with
respect
various
applications
dendrites
inhibit
expansion.
The
paper
closes
discussion
perspectives
future
modifications
achieve
stable,
dendrite-free
