Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 29, 2024
Abstract
Rechargeable
Zn‐air
batteries
(ZABs)
have
attracted
widespread
attention
due
to
their
advantages,
such
as
high
energy
density,
low
price,
and
environmental
friendliness.
However,
the
sluggish
kinetics
of
ORR/OER
greatly
prevent
practical
application
rechargeable
ZABs.
In
recent
years,
efficient,
durable,
cost‐effective
bifunctional
catalysts
are
developed
accelerate
enhance
performance
This
review
provides
a
systematic
overview
ZABs
describes
standards
oxygen
electrocatalysts.
The
latest
research
progress
in
development
non‐noble
metal‐based
nano‐metallic
electrocatalysts
for
air
electrode
is
systematically
summarized,
including
classification,
design,
synthesis
methods,
active
site
structures,
mechanism.
Finally,
challenges
faced
by
probable
solutions
proposed.
will
provide
comprehensive
guidance
efficient
electrocatalyst
future.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(14), С. 4847 - 4870
Опубликована: Янв. 1, 2024
Based
on
the
advancements
in
atomically
dispersed
multi-site
catalysts
for
FZABs,
this
review
discusses
design
methodologies
to
regulate
performance
of
bifunctional
oxygen
electrocatalysts
from
electronic
and
geometric
structures.
Abstract
In
this
study,
Co/Ni‐NC
catalyst
with
hetero‐diatomic
Co/Ni
active
sites
dispersed
on
nitrogen‐doped
carbon
matrix
is
synthesized
via
the
controlled
pyrolysis
of
ZIF‐8
containing
Co
2+
and
Ni
compounds.
Experimental
characterizations
theoretical
calculations
reveal
that
are
atomically
uniformly
in
pairs
CoN
4
‐NiN
an
intersite
distance
≈0.41
nm,
there
long‐range
d
–
coupling
between
more
electron
delocalization
for
higher
bifunctional
activity.
Besides,
situ
grown
nanotubes
at
edges
particles
allow
high
electronic
conductivity
electrocatalysis
process.
Electrochemical
evaluations
demonstrate
superior
ORR
OER
bifunctionality
a
narrow
potential
gap
only
0.691
V
long‐term
durability,
significantly
prevailing
over
single‐atom
Co‐NC
Ni‐NC
catalysts
benchmark
Pt/C
RuO
2
catalysts.
catalyzed
Zn–air
batteries
achieve
specific
capacity
771
mAh
g
−1
long
continuous
operation
period
up
to
340
h
small
voltage
≈0.65
V,
also
much
Pt/C‐RuO
.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
Abstract
Oxygen
electrocatalysis
is
a
core
reaction
in
renewable
energy
devices,
greatly
promoting
the
transformation
and
upgrading
of
structure.
Nonetheless,
performance
conversion
devices
hindered
by
large
overpotential
slow
kinetics
oxygen
electrocatalytic
reactions.
Recently,
single‐atom
catalysts
(SACs)
have
emerged
as
promising
contenders
field
because
their
exceptional
metal
atom
utilization,
distinctive
coordination
environment,
adjustable
electronic
properties.
This
review
presents
latest
advancements
design
Co‐based
SACs
for
electrocatalysis.
First,
OER
ORR
mechanisms
are
introduced.
Subsequently,
strategies
regulating
structure
summarized
three
aspects,
including
centers,
support
carriers.
A
particular
emphasis
given
to
relationship
between
properties
catalysts.
Afterward,
applications
explored.
Ultimately,
challenges
prospects
prospected.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 30, 2025
Abstract
Oxygen
reductions
and
evolution
reactions
(ORR/OER)
are
pivotal
electrochemical
processes
in
fuel
cells
metal‐air
batteries,
yet
the
rapid,
large‐scale
production
of
efficient
ORR/OER
electrocatalysts
remains
challenging.
Herein,
a
groundbreaking
microwave‐synthesis
strategy
is
presented
that
enables
rapid
facile
preparation
kilogram‐scale
electrocatalysts.
The
unique
microwave
irradiation
generates
instantaneous
thermal
energy,
facilitating
formation
nano‐carbon
bridges
interconnect
high‐density
active
sites
comprising
cobalt
single
atoms
nanoparticles.
This
innovative
architectural
configuration
significantly
enhances
kinetics
electron/mass
transfer
maximizing
accessibility
sites.
optimized
carbon‐bridged
catalyst
(CBCo‐800)
demonstrates
commendable
half‐wave
potential
(
E
1/2
)
0.86
V
versus
RHE
minimal
overpotential
difference
(Δ
0.696
V.
Furthermore,
lab‐assembled
zinc‐air
battery
utilizing
CBCo‐800
achieved
great
specific
capacity
794
mAh
g
−1
sustained
over
650
h,
outperforming
commercial
Pt/C
RuO
2
catalysts.
Density
functional
theory
(DFT)
calculations
elucidate
nanocarbon
bridge
between
dual‐active
boosts
oxygen
activation
optimizes
adsorption/desorption
dynamics
*OH/*OOH
intermediates,
thereby
lowering
energy
barriers
for
ORR/OER.
study
offers
solution
producing
site
materials,
also
establishes
robust
platform
mass
high‐performance
ACS Nano,
Год журнала:
2024,
Номер
19(1), С. 1600 - 1610
Опубликована: Дек. 27, 2024
The
development
of
high-performance
bifunctional
single-atom
catalysts
for
use
in
applications,
such
as
zinc–air
batteries,
is
greatly
impeded
by
mild
oxygen
reduction
and
evolution
reactions
(ORR
OER).
Herein,
we
report
a
electrocatalyst
designed
to
overcome
these
limitations.
catalyst
consists
well-dispersed
low-nuclearity
Co
clusters
adjacent
single
atoms
over
nitrogen-doped
carbon
matrix
(CoSA+C/NC).
precisely
tailored
asymmetric
electronic
structures
are
achieved
with
strong
interactions
between
species.
optimize
the
adsorption/desorption
strength
oxygenated
intermediates
on
single-atomic
sites
endow
exceptional
activity
under
alkaline
conditions
half-wave
potential
(E1/2)
0.91
V
an
overpotential
(η)
340
mV
at
10
mA
cm–2.
In
addition,
battery
assembled
CoSA+C/NC
achieves
high
power
density
284.1
mW
cm–2
long
operational
lifespan
400
h,
superior
those
benchmark
Pt/C
+
RuO2.
Experimental
findings
theoretical
analysis
reveal
that
enhanced
stems
from
synergistic
sites.
Consequently,
overbinding
*OH
suppressed
accelerated
removal.
This
work
establishes
design
principle
advanced
electrocatalysts
multiphase
metal
species
bearing
interactions.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(39), С. 26316 - 26349
Опубликована: Янв. 1, 2024
Dual-atom
catalysts
(DACs)
have
emerged
as
highly
promising
and
efficient
for
water
electrolysis,
primarily
due
to
their
distinct
dual-atom
site
effects.
Abstract
Rechargeable
Zn–air
batteries
(ZABs)
hold
promise
as
the
next‐generation
energy‐storage
devices
owing
to
their
affordability,
environmental
friendliness,
and
safety.
However,
cathodic
catalysts
are
easily
inactivated
in
prolonged
redox
potential
environments,
resulting
inadequate
energy
efficiency
poor
cycle
stability.
To
address
these
challenges,
anodic
active
sites
require
multiple‐atom
combinations,
that
is,
ensembles
of
metals.
Heterogeneous
bimetallic
atomically
dispersed
(HBADCs),
consisting
heterogeneous
isolated
single
atoms
atomic
pairs,
expected
synergistically
boost
cyclic
oxygen
reduction
evolution
reactions
ZABs
tuneable
microenvironments.
This
minireview
revisits
recent
achievements
HBADCs
for
ZABs.
Coordination
environment
engineering
catalytic
substrate
structure
optimization
strategies
summarized
predict
innovation
direction
ZAB
performance
enhancement.
These
divided
into
ferrous
nonferrous
dual
with
unique
microenvironments,
including
synergistic
effects,
ion
modulation,
electronic
coupling,
activity.
Finally,
conclusions
perspectives
relating
future
challenges
opportunities
provided
optimise
Abstract
Metal‐air
secondary
batteries
with
ultrahigh
specific
energies
have
received
vast
attention
and
are
considered
new
promising
energy
storage.
The
slow
redox
reactions
between
oxygen‐water
molecules
lead
to
low
efficiency
(55–71%)
limited
applications.
Herein,
it
is
proposed
that
the
MIL‐68(In)‐derived
porous
carbon
nanotube
supports
CoNiFeP
heteroconjugated
alloy
catalyst
an
overboiling
point
electrolyte
achieve
oxidation
rate
of
water
molecules.
Structural
characterization
density
functional
theory
calculations
reveal
greatly
reduces
free
process,
further
accelerates
dissociation
O─H
hydrogen
bonds,
release
O
2
molecules,
achieving
extra‐low
overpotential
110
mV@10
mA
cm
−2
far
lower
than
commercial
Ir/C
catalysts
192
mV
at
125
°C
state‐of‐the‐art.
Furthermore,
assembled
rechargeable
zinc‐air
begins
break
through
85
°C,
jumps
100
reaches
88.1%
ultralow
decay
0.0068%
after
150
cycles
superior
those
reported
metal‐air
batteries.
This
work
provides
a
joint‐design
strategy
reexamines
battery
operating
temperature
construct
higher
for
fuel
cells.
The
seawater
battery
(SWB)
holds
great
potential
as
the
next-generation
energy
supply
system
for
marine
electrical
equipment.
However,
its
efficiency
and
durability
are
hindered
by
low
oxygen
concentration
harmful
Cl