Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 14, 2024
Abstract
Designing
bifunctional
catalysts
to
reduce
the
oxygen
evolution
reaction
(OER)
and
reduction
(ORR)
barriers
while
accelerating
kinetics
is
perceived
be
a
promising
strategy
improve
performance
of
Zinc–air
batteries.
Unsymmetric
configuration
in
single‐atom
has
attracted
attention
due
its
unique
advantages
regulating
electron
orbitals.
In
this
work,
seesaw
effect
unsymmetric
Fe–Co
bimetallic
monoatomic
configurations
proposed,
which
can
effectively
OER/ORR
activity
catalyst.
Compared
with
symmetrical
model
Fe–Co,
strong
charge
polarization
between
Co
Fe
atoms
detected,
whom
spin‐down
electrons
around
are
much
higher
than
those
spin‐up
electrons.
The
occurred
atoms,
resulting
negative
shift
d‐band
center,
means
that
adsorption
intermediates
weakened
more
conducive
their
dissociation.
optimized
catalyst
leads
excellent
ZABs,
peak
power
density
215
mW
cm
−2
stable
cycling
for
>1300
h
>4000
cycles.
Flexible
batteries
have
also
gained
demonstrate
potential
field
flexible
wearables.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(5), P. 1723 - 1772
Published: Jan. 1, 2023
Defective
two-dimensional
(2D)
materials
show
huge
potential
for
energy-related
fields.
This
review
overviews
the
formation/evolution
mechanisms
and
engineering
strategies
of
defects
in
2D
materials,
which
enable
enhanced
electrode
reaction
kinetics.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(35)
Published: June 7, 2023
Ever-growing
demands
for
rechargeable
zinc-air
batteries
(ZABs)
call
efficient
bifunctional
electrocatalysts.
Among
various
electrocatalysts,
single
atom
catalysts
(SACs)
have
received
increasing
attention
due
to
the
merits
of
high
utilization,
structural
tunability,
and
remarkable
activity.
Rational
design
SACs
relies
heavily
on
an
in-depth
understanding
reaction
mechanisms,
especially
dynamic
evolution
under
electrochemical
conditions.
This
requires
a
systematic
study
in
mechanisms
replace
current
trial
error
modes.
Herein,
fundamental
oxygen
reduction
is
first
presented
combining
situ
and/or
operando
characterizations
theoretical
calculations.
By
highlighting
structure-performance
relationships,
rational
regulation
strategies
are
particularly
proposed
facilitate
SACs.
Furthermore,
future
perspectives
challenges
discussed.
review
provides
thorough
SACs,
which
expected
pave
avenue
exploring
optimum
effective
ZABs.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(17)
Published: Feb. 6, 2023
The
establishment
of
abundant
three-phase
interfaces
with
accelerated
mass
transfer
in
air
cathodes
is
highly
desirable
for
the
development
high-rate
and
long-cycling
rechargeable
zinc-air
batteries
(ZABs).
Covalent
organic
frameworks
(COFs)
exhibit
tailored
nanopore
structures,
facilitating
rational
tuning
their
specific
properties.
Here,
by
finely
fluorinated
nanopores
a
COF,
novel
cathode
ZABs
unprecedentedly
designed
synthesized.
COF
nanosheets
are
decorated
alkyl
chains,
which
shows
high
affinity
to
oxygen
(O2
),
its
(fluorinated
COF).
stacked
into
well-defined
O2
-transport
channels,
then
assembled
aerophilic
"nano-islands"
on
hydrophilic
FeNi
layered-double-hydroxide
(FeNi
LDH)
electrocatalyst
surface.
Therefore,
mass-transport
"highway"
water
segregated
nanoscale,
significantly
enlarges
area
boundaries
greatly
promotes
mass-transfer
therein.
based
COF-modified
deliver
small
charge/discharge
voltage
gap
(0.64
V
at
5
mA
cm-2
peak
power
density
(118
mW
stable
cyclability.
This
work
provides
feasible
approach
design
high-performance
ZABs,
will
expand
new
application
COFs.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: March 26, 2024
Zinc-air
batteries
(ZABs)
are
promising
energy
storage
systems
because
of
high
theoretical
density,
safety,
low
cost,
and
abundance
zinc.
However,
the
slow
multi-step
reaction
oxygen
heavy
reliance
on
noble-metal
catalysts
hinder
practical
applications
ZABs.
Therefore,
feasible
advanced
non-noble-metal
electrocatalysts
for
air
cathodes
need
to
be
identified
promote
catalytic
reaction.
In
this
review,
we
initially
introduced
advancement
ZABs
in
past
two
decades
provided
an
overview
key
developments
field.
Then,
discussed
working
mechanism
design
bifunctional
from
perspective
morphology
design,
crystal
structure
tuning,
interface
strategy,
atomic
engineering.
We
also
included
studies,
machine
learning,
characterization
technologies
provide
a
comprehensive
understanding
structure-performance
relationship
pathways
redox
reactions.
Finally,
challenges
prospects
related
designing
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(19), P. 10095 - 10124
Published: Jan. 1, 2023
Considering
that
the
cathodic
oxygen
reduction
reaction
(ORR)
is
sluggish,
it
necessary
to
develop
efficient
and
durable
catalysts
accelerate
this
reaction.
