Abstract
The
construction
of
freestanding
carbon
nanofiber
membrane
with
single‐atomic
metal
active
sites
and
interconnected
microchannels
as
air
electrodes
is
vital
for
boosting
the
performance
zinc–air
batteries
(ZABs).
Herein,
Fe
prepared
on
hierarchical
nitrogen/phosphorus
co‐doped
nanofibers
(Fe
SACs@PNCNFs)
by
loading
Fe‐doped
zeolitic
imidazolate
framework‐8
leaf‐like
structures
electrospun
polyacrylonitrile
(PAN)
subsequent
multi‐step
pyrolysis
in
presence
sodium
monophosphate,
which
are
confirmed
to
be
form
Fe‐N
3
P
1
X‐ray
adsorption
spectra.
asymmetric
N/P
coordinated
theoretically
demonstrated
boost
ORR
a
half‐wave
potential
0.89
V
due
weakened
*
O
while
stabilizing
OOH
arising
from
increased
charge
density
compared
symmetric
N
4
.
Moreover,
when
liquid
quasi‐solid
ZABs
assembled,
excellent
battery
also
achieved
peak
power
163
72
mW
cm
−2
well
good
stability
more
than
190
65
h,
respectively.
Advanced Materials,
Год журнала:
2024,
Номер
36(24)
Опубликована: Март 16, 2024
Zinc-based
batteries
(ZBBs)
have
demonstrated
considerable
potential
among
secondary
batteries,
attributing
to
their
advantages
including
good
safety,
environmental
friendliness,
and
high
energy
density.
However,
ZBBs
still
suffer
from
issues
such
as
the
formation
of
zinc
dendrites,
occurrence
side
reactions,
retardation
reaction
kinetics,
shuttle
effects,
posing
a
great
challenge
for
practical
applications.
As
promising
porous
materials,
covalent
organic
frameworks
(COFs)
derivatives
rigid
skeletons,
ordered
structures,
permanent
porosity,
which
endow
them
with
application
in
ZBBs.
This
review,
therefore,
provides
systematic
overview
detailing
on
COFs
structure
pertaining
electrochemical
performance
ZBBs,
following
an
depth
discussion
challenges
faced
by
includes
dendrites
reactions
at
anode,
well
dissolution,
structural
change,
slow
effect
cathode.
Then,
COF-correlated
materials
roles
various
are
highlighted.
Finally,
outlined
outlook
future
development
is
provided.
The
review
would
serve
valuable
reference
further
research
into
utilization
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(25)
Опубликована: Апрель 21, 2024
Abstract
Aqueous
zinc
(Zn)
battery
with
remarkable
advantages
of
high
safety,
low
cost,
and
reversibility
is
highly
applauded
in
next‐generation
low‐speed
electric
vehicles
large‐scale
energy
storage
applications.
However,
Zn
anode
suffers
from
a
series
unfavorable
reactions,
hindering
its
progress
toward
industrialization.
Herein,
functionalized
hydrogel
film
designed
using
polydopamine
polyacrylamide
crosslinking
(PDAM)
as
the
protective
layer
to
stabilize
anode.
Benefiting
strong
interaction
2+
PDAM,
primary
solvation
shell
regulated
by
PDAM
into
form
PDAM–Zn
‐5H
2
O.
This
remodeling
prevents
dendrite
growth
inhibits
water‐induced
side
reactions.
As
result,
Zn–MnO
PDAM‐coated
exhibits
excellent
cycling
stability,
demonstrating
over
1150
cycles
at
an
areal
capacity
5
mAh
cm
−2
average
Coulombic
efficiency
(CE)
96.5%.
For
scaled‐up
PDAM@Zn–MnO
pouch
cell
80
mAh,
stable
200
CE
91.9%
achieved.
The
superior
enabled
enlightens
arena
ACS Energy Letters,
Год журнала:
2024,
Номер
9(3), С. 1063 - 1072
Опубликована: Фев. 20, 2024
The
disproportionation
reaction
of
Mn3+
ions
induced
by
the
Jahn–Teller
effect
hinders
practical
application
Mn-based
oxides
in
aqueous
zinc-ion
batteries
(AZIBs).
Herein,
Ag2Mn8O16
is
reported
as
a
promising
cathode
for
AZIBs,
and
its
performance
improvement
mechanism
chlorine-containing
electrolyte
comprehensively
investigated.
As
demonstrated,
partial
deintercalation
silver
promotes
valence
state
reactivity
Mn
element
Ag2–xMn8O16
favors
formation
AgCl
layer.
an
electronic
insulator
ionic
conductor,
layer
can
effectively
inhibit
manganese
dissolution,
reduce
activation
energy
barrier,
facilitate
zinc
diffusion
kinetics
Ag2Mn8O16.
expected,
exhibits
high
capacity
369.2
mAh
g–1
at
0.1
A
269.6
after
200
cycles
0.5
optimized
electrolyte,
implying
situ
interface
engineering
eliminate
dilemma
dissolution
inactivation
batteries.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(40)
Опубликована: Сен. 13, 2023
Abstract
Zinc
powder
is
promising
for
rechargeable
zinc‐ion
batteries
due
to
its
low
cost
and
well
tunability.
However,
the
corrosion
dendrite
growth
are
much
more
serious
in
zinc
than
those
conventional
foils,
which
poses
a
significant
obstacle
wide
utilization.
Herein,
an
ultra‐stable
Zn
powder‐based
anode
constructed
by
coating
conformal
ion‐conductive
hydrogel
layer
on
3D‐printed
scaffolds
reported.
The
interconnected
effectively
redistributes
ion
flux
homogenizes
surface
electric
field,
while
3D
architecture
alleviates
stress
from
volume
change
at
high
current
densities/capacities.
As
result,
symmetric
cell
steadily
works
over
4700
h
(>6
months)
density/capacity
of
5
mA
cm
−2
/5
mAh
,
superior
previously
reported
anodes
bare
foil,
providing
route
practical
applications
low‐cost
large‐scale
batteries.
Abstract
Li
and
Zn
metals
are
considered
promising
negative
electrode
materials
for
the
next
generation
of
rechargeable
metal
batteries
because
their
non‐toxicity
high
theoretical
capacity.
However,
uneven
deposition
ions
(Li
+
,
2+
)
uncontrolled
growth
dendrites
result
in
poor
electrochemical
stability,
unsatisfactory
cycle
life,
rapid
capacity
decay
assembled
with
electrodes.
Owing
to
unique
internal
directional
channels
abundant
redox
active
sites
covalent
organic
frameworks
(COFs),
they
can
be
used
promote
uniform
during
stripping/electroplating
through
interface
modification
strategies,
thereby
inhibiting
dendrite
growth.
COFs
provide
a
new
perspective
addressing
challenges
faced
by
anodes
ion
batteries.
This
article
discusses
stability
types
COFs,
summarizes
some
novel
COF
synthesis
methods.
Additionally,
it
reviews
latest
progress
optimization
methods
using
improve
battery
performance.
Finally,
main
these
areas
discussed.
review
will
inspire
future
research
on
The Chemical Record,
Год журнала:
2023,
Номер
24(1)
Опубликована: Ноя. 20, 2023
Abstract
In
recent
years,
a
new
class
of
highly
crystalline
advanced
permeable
materials
covalent‐organic
frameworks
(COFs)
have
garnered
great
deal
attention
thanks
to
their
remarkable
properties,
such
as
large
surface
area,
ordered
pores
and
channels,
controllable
structures.
The
lower
physical
stability
electrical
conductivity,
however,
prevent
them
from
being
widely
used
in
applications
like
photocatalytic
activities
innovative
energy
storage
conversion
devices.
For
this
reason,
many
studies
focused
on
finding
ways
improve
upon
these
interesting
while
also
minimizing
drawbacks.
This
review
article
begins
with
brief
introduction
the
history
major
milestones
COFs
development
before
moving
comprehensive
exploration
various
synthesis
methods
successes
signposts
potential
carbon
dioxide
(CO
2
)
sequestration,
supercapacitors
(SCs),
lithium‐ion
batteries
(LIBs),
hydrogen
production
(H
‐energy).
conclusion,
difficulties
future
developing
efficient
ideas
for
well
electrochemical
are
highlighted.
