Batteries,
Год журнала:
2023,
Номер
9(8), С. 429 - 429
Опубликована: Авг. 17, 2023
With
the
merits
of
having
excellent
safety,
being
low
cost
and
environmentally
friendly,
zinc-ion
hybrid
supercapacitors
(ZHSCs)
are
expected
to
be
widely
used
in
large-scale
energy
storage
flexible
wearable
devices.
However,
limited
by
their
sluggish
kinetic
process,
ZHSCs
suffer
from
low-specific
capacity
poor
cycling
stability
at
high
cathode
mass
loading.
Herein,
a
novel
designed
oxygen-rich
hierarchical
porous
carbon
(HPOC)
is
obtained
one-step
strategy
synchronous
activation
templated
for
high-performance
ZHSCs.
The
fabricated
with
HPOCs
show
significant
improvement
Zn-ion
capability,
209.4
mAh
g−1
0.1
A
108.3
10
g−1.
Additionally,
excellent,
92.3%
retention
after
4000
cycles.
Furthermore,
an
impressive
areal
1.7
cm−2
achieved,
even
loading
12.5
mg
cm−2.
More
importantly,
quasi-solid
state
also
considerable
capability
(183.5
g−1)
density
178.0
Wh
kg−1.
This
promising
result
suggests
valuable
route
produce
functional
nanocarbon
materials
zinc
applications.
Advanced Powder Materials,
Год журнала:
2023,
Номер
3(2), С. 100167 - 100167
Опубликована: Ноя. 15, 2023
Layered
materials
with
adjustable
framework,
as
the
most
potential
cathode
for
aqueous
rechargeable
zinc
ion
batterie,
have
high
capacity,
permit
of
rapid
diffusion,
and
charge
transfer
channels.
Previous
studies
widely
investigated
their
preparation
storage
mechanism,
but
intrinsic
relationship
between
structural
design
layered
electrochemical
performance
has
not
been
well
established.
In
this
work,
based
on
first
principles
calculations
experiments,
a
crucial
strategy
pre-intercalated
metal-ions
in
vanadium
oxide
interlayer
administrable
p-band
center
(ɛp)
O
is
explored
to
enhance
Zn2+
storage.
This
regulation
degree
covalent
bond
average
atoms
varies
binding
energy
O,
thus
affecting
intercalation/de-intercalation
Zn2+.
The
present
study
demonstrates
that
ɛp
can
be
used
an
important
indicator
boost
storage,
which
provides
new
concept
toward
controlled
application
materials.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(19)
Опубликована: Янв. 12, 2024
Abstract
Aqueous
zinc‐ion
batteries,
considered
one
of
the
important
candidate
technologies
for
green
and
environmentally
friendly
large‐scale
energy
storage,
hinge
upon
performance
cathode
materials
as
key
factor
driving
their
development.
Vanadate
oxide
is
a
promising
material
due
to
its
high
theoretical
capacity;
furthermore,
in
order
accelerate
reaction
kinetics,
ion
or
molecular
intercalation
often
utilized.
However,
non‐electrochemically
active
intercalants
tend
cause
capacity
degradation.
In
this
study,
one‐step
hydrothermal
method
employed
intercalate
electrochemically
poly‐o‐phenylenediamine
(PoPDA)
into
interlayers
NH
4
V
3
O
8
(NVO),
with
graphene
(GO)
being
used
further
improve
conductivity
composite
(NVO/PoPDA@GO).
The
insertion
PoPDA
expands
interlayer
spacing
NVO,
alters
charge
distribution,
enhances
migration
rate
Zn
2+
among
hybrid
materials.
Additionally,
serves
support
within
interlayers,
improving
stability.
Moreover,
reversible
transformation
rearrangement
chemical
bonds
(C═N/C─N)
allows
coordination
,
providing
additional
capacity.
As
result,
NVO/PoPDA@GO
exhibits
excellent
electrochemical
performance,
releasing
specific
433
mAh
g
−1
at
0.5
A
even
224
5
.
This
work
provides
direction
preparation
organic–inorganic
dual
components.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(35)
Опубликована: Июль 21, 2024
Abstract
δ‐MnO
2
has
been
vigorously
developed
as
an
ideal
cathode
material
for
rechargeable
aqueous
zinc‐ion
batteries
(AZIBs)
due
to
its
spacious
layer
spacing
suitable
ion
storage.
However,
poor
intrinsic
conductivity,
structural
collapse,
and
sluggish
reaction
kinetics
are
major
limitations
restricting
their
battery
performance.
Doping
engineering
proven
be
effective
strategy
modifying
the
structure,
electronic
properties
of
Mn‐based
oxides.
Here,
a
series
hierarchical
flowers
with
different
cerium‐doped
sites
proposed
high‐performance
cathodes
AZIBs,
revealing
effects
various
Ce
doping
on
MnO
layer‐by‐layer
structure
Chemical
analysis
theoretical
calculations
indicate
that
both
in‐layer
interlayer
(Ce
in/inter
‐MnO
)
allows
sufficient
Zn
2+
storage
sites,
higher
enhanced
enlarged
spacing,
increased
oxygen
defects,
reduced
Coulombic
repulsion
between
zinc
ions
manganese
oxide
hosts.
As
result,
extended
transfer
channels
sturdy
delivers
superior
capacity
348.8
mAh
g
−1
at
current
density
300
mA
over
100
cycles,
high
retention
rate
≈100%
3000
2000
cycles.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(37)
Опубликована: Март 26, 2024
Abstract
Vanadium‐based
materials
are
considered
promising
cathodes
for
high‐energy‐density
zinc‐ion
batteries
(ZIBs)
owing
to
their
open
skeleton
structure
and
multielectron
redox
reactions.
However,
most
vanadium‐based
have
low
intrinsic
conductivities
sluggish
reaction
kinetics,
resulting
in
poor
cycling
properties.
Herein,
a
layer‐stacked
Mn
x
V
2
O
6
+V
CT
(MVO+V
C)
heterostructure
cathode
with
high
capacity
superior
cyclic
stability
based
on
an
electrostatic
self‐assembly
strategy
is
proposed.
The
abundant
heterointerfaces
between
MVO
C
dramatically
enhanced
the
conductivity
of
composites.
Moreover,
generation
built‐in
electric
fields
at
MVO/V
heterointerface
reduced
migration
energy
barrier
Zn
2+
,
accelerated
charge
carrier
transport,
kinetics
cathode.
In
addition,
abundance
nano‐channels
heterostructures
facilitates
rapid
electrolyte
transport
Therefore,
MVO+V
showed
389.4
mAh
g
−1
after
590
cycles
0.5
A
290.2
6000
5
demonstrating
its
stability.
particular,
assembled
exhibited
remarkable
electrochemical
performance
−20–40
°C,
revealing
excellent
wide‐temperature
adaptability.
This
work
offers
important
insights
into
design
long‐lifespan
ZIBs.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(44)
Опубликована: Окт. 11, 2023
Abstract
Zinc‐ion
batteries
with
chalcogen‐based
(S,
Se,
Te)
cathodes
have
emerged
as
a
promising
candidate
for
utility‐scale
energy
storage
systems
and
portable
electronics,
which
attracted
rapid
attention
offer
tremendous
opportunities
owing
to
their
excellent
density,
on
top
of
the
advantages
aqueous
Zn
including
cost‐effectiveness,
inherent
safety,
eco‐friendliness.
Here,
comprehensive
overview
basic
mechanism
zinc–chalcogen
great
intrinsic
issues
is
provided.
More
detailed
recent
progress
summarized
existing
challenges
strategies
are
provided
well.
First,
four
specific
types
presented,
including:
zinc–sulfur,
zinc–selenium,
zinc–selenium
sulfide,
zinc–tellurium
batteries.
Second,
remaining
within
in
material
preparation,
physicochemical
properties,
battery
performance
discussed.
Meanwhile,
series
constructive
comprehensively
put
forward
optimizing
electrochemical
performance.
Finally,
future
research
perspectives
proposed
exploration
innovation
next‐generation
green
zinc
applications.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(50)
Опубликована: Сен. 5, 2023
Abstract
Layered
guest
carbon
materials
could
induce
interlayer
engineering,
especially
in
regulating
the
structure
and
electronic
properties
of
hosts,
leading
to
high
performance
Li‐ion
batteries
(LIBs).
Here,
crystalline
graphdiyne
oxide
(GDYO)
is
successfully
inserted
into
MoS
2
gallery
via
electrostatic
self‐assembly.
Experimental
theoretical
data
show
that
GDYO‐embedding
induces
engineering
causing
(i)
enlarged
distance
(supplying
additional
diffusion
channels
storage
sites
mitigating
volume
change),
(ii)
creating
interfacial
electric
fields
(significantly
improving
transport
kinetics),
(iii)
limiting
electrochemical
products
Mo
soluble
lithium
polysulfide
(MoS
regeneration),
(iv)
regulation
current
density
distribution
during
reaction
(uniform
Li
plating).
Moreover,
through
systematic
ex
situ
investigations,
triple‐mechanism
thoroughly
elucidated
heterostructure,
emphasizing
positive
effects
GDYO
intercalation
on
as
well
phase
conversion
processes.
Such
a
/GDYO
anode
exhibits
reversible
capacity
(≈652.6
mAh
g
−1
at
2.0
A
)
superior
cyclic
stability
655.1
after
1000
cycles.
GDYO‐induced
based
host–guest
chemistry
can
provide
new
ideas
for
designing
effective
heterostructures
high‐performance
energy
systems.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(9)
Опубликована: Ноя. 27, 2023
Abstract
V
2
CT
x
MXene
is
a
“rising
star”
cathode
material
for
aqueous
zinc‐based
batteries
(AZBs)
owing
to
its
large/flexible
interlayer
spacing,
rich
redox
chemistry
of
V,
and
high
electronic
conductivity.
Nevertheless,
the
plentiful
F
surface
terminations
generated
during
common
preparation
(fluorine‐containing
acid
etching
process)
generally
result
in
hydrophobicity,
poor
Zn
affinity,
sluggish
ion‐diffusion
kinetics.
Herein,
novel
OH‐termination‐rich
with
“K
+
‐pillars”
(alk‐V
)
fabricated
via
facile
one‐step
alkalization
method,
which
features
excellent
hydrophilicity,
expanded
ion‐transport
channels,
robust
layered
structure.
Impressively,
tailored
alk‐V
enables
highly
reversible
rapid
Li
/Zn
2+
co‐insertion/extraction
electrochemistry
formulated
15
m
LiTSFI
1
Zn(CF
3
SO
electrolyte,
meanwhile,
“self‐exfoliation”
phenomenon
MXenes
upon
cycling
significantly
increases
active
sites,
rendering
superior
rate
performance
(498.2/195.1
mAh
g
−1
at
0.1/30
A
,
respectively)
exceptional
life
(96.2%
capacity
retention
over
20
000
cycles).
Systematic
situ/ex
situ
analyses
theoretical
computations
elucidate
above
hybrid‐ion
storage
mechanisms.
Finally,
flexible
quasi‐solid‐state
rechargeable
employing
exhibit
inspiring
energy
output
even
under
severe
deformation
conditions
low
temperatures.
This
study
provides
new
perspectives
designing
high‐performance
MXene‐based
cathodes
AZBs
by
modulating
terminations.
