Advanced Energy Materials,
Год журнала:
2022,
Номер
12(34)
Опубликована: Июль 27, 2022
Abstract
Low
interfacial
ion
transfer
kinetics
and
structure
instability
of
solid‐state
electrolytes
are
the
bottleneck
which
seriously
limits
working
life
energy
density
flexible
zinc–air
batteries
(ZABs).
Herein,
an
optimized
electrode–electrolyte
integrated
MXene/Zn‐layered
double
hydroxides
(LDH)‐array@PVA
is
developed
via
electrochemical
Zn
deposition,
in
situ
LDH
growth,
polymer
infiltration,
crosslinking
route,
integrating
anode
gel
electrolyte
(GPE)
for
high‐performance
ZABs.
The
highly
orientated
hydrophilic
CoNi‐LDH
arrays
sufficiently
crosslink
with
poly(vinyl
alcohol)
(PVA)
chains,
effectively
decreases
crystallinity
degree
PVA
provides
fast
ionic
diffusion
channels
to
reduce
transport
barrier,
endowing
LDH‐array@PVA
GPE
significantly
improved
conductivity,
water
retention
capability,
mechanical
flexibility.
Moreover,
anode‐GPE
interface
MXene/Zn‐LDH‐array@PVA
demonstrates
excellent
compatibility
stability,
reduces
impedance,
promotes
kinetics,
enhancing
a
uniform
zinc
deposition
without
dendrite
formation.
stable
bring
MXene/Zn‐LDH‐array@PVA‐based
ZAB
long
cycling
up
50
h,
high
power
92.3
mW
cm
−2
.
rationally
designed
integration
strategies
provide
enlightening
pathways
design
ACS Nano,
Год журнала:
2021,
Номер
15(9), С. 15259 - 15273
Опубликована: Авг. 26, 2021
Owing
to
its
high
theoretical
capacity,
appropriate
working
potential,
abundant
resource,
intrinsic
safety,
and
low
cost,
zinc
(Zn)
metal
is
regarded
as
one
of
the
most
promising
anode
candidates
for
aqueous
batteries.
However,
hazards
caused
by
dendrite
growth
side
reactions
impede
practical
applications.
Herein,
solve
these
problems,
a
protective
heterogeneous
layer
composed
electronic
conductive
sulfur-doped
three-dimensional
(3D)
MXene
ionic
ZnS
on
Zn
designed
constructed.
The
sulfur
doping
creation
3D
structure
are
simultaneously
achieved
during
generation
ZnS.
can
effectively
homogenize
distribution
electric
field,
decrease
local
current
density,
alleviate
volume
change.
inhibit
reactions,
promote
uniform
Zn2+
distribution,
accelerate
migration.
Consequently,
stable
dendrite-free
with
notable
cycling
stability
up
1600
h
rate
performance.
relationship
between
performance
also
probed.
With
protected
freestanding
MXene@MnO2
cathode,
high-energy,
long
life,
high-rate
full
cell
obtained.
This
work
may
provide
direction
design
anodes
other
metal-based
battery
systems.
Advanced Energy Materials,
Год журнала:
2020,
Номер
11(5)
Опубликована: Дек. 18, 2020
Abstract
In
the
past
decades,
world
has
witnessed
successful
commercialization
of
“rocking‐chair”‐type
lithium‐ion
batteries
with
lithium
metal
free
anodes.
Owing
to
their
safe,
green,
easy
manufacturing,
and
cost‐efficiency
characteristics,
rechargeable
zinc
have
recently
received
more
attention.
However,
practical
application
Zn
is
hampered
mainly
by
dendritic
growth
anode,
which
leads
poor
Coulombic
efficiency,
hazards,
various
side
reactions.
Herein,
emerging
Zn‐ion
are
systemically
reviewed
host
anodes
instead
As
an
introduction,
fundamental
principles,
advantages,
challenges
discussed.
Subsequently,
design
principles
recent
advances
cathode,
electrolyte
for
“rocking‐chair”
summarized.
To
conclude,
perspectives
on
future
presented.
It
hoped
that
this
review
may
provide
alternative
directions
batteries.
Advanced Functional Materials,
Год журнала:
2020,
Номер
30(45)
Опубликована: Сен. 6, 2020
Abstract
Metal
anodes
based
on
a
plating/stripping
electrochemistry
such
as
metallic
Li,
Na,
K,
Zn,
Mg,
Ca,
Al,
and
Fe
have
attracted
widespread
attention
over
the
past
several
years
because
of
their
high
theoretical
specific
capacity,
low
electrochemical
potential,
superior
electronic
conductivity.
can
be
paired
with
cathodes
to
construct
high‐energy‐density
rechargeable
metal
batteries.
However,
inherent
issues
including
large
volume
changes,
uncontrollable
growth
dangerous
dendrites,
an
unstable
solid
electrolyte
interphase
(SEI)
hinder
further
development.
MXene
emerging
2D
material
has
shown
great
potential
address
due
its
structure,
abundant
surface
functional
groups,
ability
macroscopic
architectures.
To
date,
under
assistance
MXene,
various
strategies
been
proposed
achieve
stable
dendrite‐free
anodes,
MXene‐based
host
design,
designing
metalphilic
substrates,
modifying
constructing
arrays,
decorating
separators
or
electrolytes
MXene.
Herein
applications
advances
in
are
carefully
summarized
analyzed.
Some
perspectives
outlooks
for
future
research
also
proposed.
ACS Nano,
Год журнала:
2021,
Номер
15(7), С. 11828 - 11842
Опубликована: Июнь 16, 2021
Rechargeable
zinc
(Zn)-ion
batteries
are
regarded
as
highly
prospective
candidates
for
next-generation
renewable
and
safe
energy
storage
systems.
However,
the
uncontrolled
dendrite
growth
of
Zn
anode
impedes
their
practical
application.
Here,
a
scalable
controllable
approach
is
developed
converting
commercial
titanium
(Ti)
foil
to
3D
porous
Ti,
which
retains
good
resistance
corrosion,
high
electrical
conductivity,
excellent
mechanical
properties.
Benefiting
from
spontaneous
ultrathin
zincophilic
dioxide
(TiO2)
interfacial
layer
continuous
structure,
Ti
can
act
an
effective
host
achieve
Ti/Zn
metal
anode.
By
ensuring
homogeneous
nucleation,
uniform
current
distribution,
volume
change
accommodation,
dendritic
effectively
inhibited
with
stable
plating/stripping
up
2000
h
low
polarization.
When
conjugated
sulfur-doped
Ti3C2Tx
MXene@MnO2
nanotube
cathode,
rate
cell
achieved
95.46%
capacity
retention
after
500
cycles
at
5
A
g-1.
This
work
may
also
be
interesting
researches
in
metals
other
battery
eScience,
Год журнала:
2021,
Номер
1(2), С. 141 - 162
Опубликована: Дек. 1, 2021
Silicon
(Si)
is
one
of
the
most
promising
anode
materials
for
next
generation
lithium-ion
battery
(LIB)
due
to
its
high
specific
capacity,
low
lithiation
potential,
and
natural
abundance.
However,
huge
variation
in
volume
during
storage
lithium,
along
with
conductivity
element,
are
main
factors
hindering
commercial
application.
Designing
micro–nano
structures
as
well
composites
heterogeneous
have
proven
be
effective
strategies
overcome
these
issues.
Electrospinning
technology
an
affordable
scalable
method
easily
constructing
a
unique
hierarchical
structure
while
realizing
materials.
So
far,
many
efforts
been
made
solve
problems
Si-based
anodes
general
electrospinning.
This
review
considers
technical
fundamental
design
electrospun
nanofibers,
including
preparation
processes,
structural
engineering,
lithium
performance.
The
structure–performance
relationship
various
effects
compositing
explored
detail.
Finally,
remaining
challenges
discussed,
directions
future
research.
will
provide
inspiration
researchers
manufacture
nanofibers
LIBs.
