Inorganics,
Journal Year:
2025,
Volume and Issue:
13(5), P. 143 - 143
Published: April 30, 2025
Realistic
applications
of
zinc–air
batteries
are
hindered
by
the
high
cost
Pt/C
cathode
catalysts,
necessitating
search
for
alternative,
sustainable
electrocatalysts.
In
this
work,
we
developed
a
Fe3C/Fe-Nx-C
catalyst
from
waste
coffee
biomass
an
oxygen
reduction
reaction
(ORR)
in
alkaline
electrolytes
and
battery
applications.
The
was
synthesized
via
mechanochemical
synthesis
strategy
using
melamine
EDTA–Fe
chelate
complex,
followed
pyrolysis
at
900
°C.
obtained
evaluated
detailed
ORR
activity
stability.
results
show
that
displayed
excellent
with
E1/2
0.93
V
vs.
RHE,
Tafel
slope
68
mV
dec−1,
3.95
e−
transfer
O2
molecule,
ECSA
values.
addition,
exhibited
stability
loss
75
10,000
potential
cycles,
~14%
relative
currents
chronoamperometric
test.
When
applied
as
battery,
delivered
power
density
81
mW
cm−2
admirable
electrochemical
under
galvanostatic
discharge
conditions.
Furthermore,
practical
application
demonstrated
panel
LEDs
illuminated
dual-cell
connected
series,
clearly
validating
practically
catalysts
use
various
energy
storage
electronic
devices.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 19, 2024
Abstract
The
electrochemical
oxygen
reduction
reaction
(ORR)
to
produce
hydrogen
peroxide
(H
2
O
)
is
appealing
due
its
sustainability.
However,
efficiency
compromised
by
the
competing
4e
−
ORR
pathway.
In
this
work,
we
report
a
hierarchical
carbon
nanosheet
array
electrode
with
single-atom
Ni
catalyst
synthesized
using
organic
molecule-intercalated
layered
double
hydroxides
as
precursors.
exhibits
excellent
2e
performance
under
alkaline
conditions
and
achieves
H
yield
rates
of
0.73
mol
g
cat
−1
h
in
H-cell
5.48
flow
cell,
outperforming
most
reported
catalysts.
experimental
results
show
that
atoms
selectively
adsorb
,
while
nanosheets
generate
reactive
species,
synergistically
enhancing
production.
Furthermore,
coupling
system
integrating
ethylene
glycol
oxidation
significantly
enhances
rate
7.30
producing
valuable
glycolic
acid.
Moreover,
convert
electrolyte
containing
directly
into
downstream
product
sodium
perborate
reduce
separation
cost
further.
Techno-economic
analysis
validates
economic
viability
system.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(32), P. 22650 - 22660
Published: July 30, 2024
Iron-nitrogen-carbon
(Fe-N-C)
catalysts,
although
the
most
active
platinum-free
option
for
cathodic
oxygen
reduction
reaction
(ORR),
suffer
from
poor
durability
due
to
Fe
leaching
and
consequent
Fenton
effect,
limiting
their
practical
application
in
low-temperature
fuel
cells.
This
work
demonstrates
an
integrated
catalyst
of
a
platinum-iron
(PtFe)
alloy
planted
Fe-N-C
matrix
(PtFe/Fe-N-C)
address
this
challenge.
novel
exhibits
both
high-efficiency
activity
stability,
as
evidenced
by
its
impressive
half-wave
potential
(
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(30), P. 18832 - 18865
Published: Jan. 1, 2024
This
review
focuses
mainly
on
the
overall
facilitating
effect
of
heterostructures
OER
process.
The
fabrication
heterostructured
electrocatalysts
and
relationship
between
their
structures
electrocatalytic
properties
are
discussed.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 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.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(51)
Published: Sept. 4, 2024
Abstract
Zinc‐air
batteries
(ZABs)
have
the
advantages
of
high
energy
density
and
rich
zinc
raw
materials.
It
is
a
low‐cost,
green
sustainable
storage
device.
At
present,
one
key
technologies
that
hinder
large‐scale
application
ZABs
design
fabrication
oxygen
evolution
reaction
(OER)
reduction
(ORR)
bifunctional
catalysts
with
excellent
performance,
especially
non‐platinum‐based
catalysts.
Here
N‐doped
carbon‐coated
Fe‐based
selenium
oxide
catalyst
Fe
2
O(SeO
3
)
/Fe
C@NC
performance
has
been
fabricated
by
one‐step
pyrolysis
then
electrochemical
oxidization.
The
experimental
results
confirmed
existence
Fe−O−Se
bonds
in
crystal
phase
C@NC,
could
obviously
enhance
ORR
OER
catalytic
C@NC.
Density
functional
theoretical
calculations
(DFT)
had
higher
d
‐band
center
atom
lower
p
‐orbital
coupling
degree
its
own
lattice
O
than
,
which
leads
to
site
being
more
likely
adsorb
external
intermediates.
modification
coordination
environment
atoms
optimizes
adsorption
for
Compared
showed
obvious
enhancements
ORR/OER
activities
half‐wave
potential
0.91
V
0.1
M
KOH
electrolyte
low
overpotential
345
mV
at
10
mA
cm
−2
1.0
electrolyte.
peak
power
specific
capacity
C@NC‐based
are
those
Pt/C+RuO
‐ZABs.
above
demonstrate
asymmetrical
plays
role
improving
ZABs.
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Significant
functionalization
of
Fe
5
clusters
with
CuN
2
O
single
atom,
compared
4
and
FeN
,
in
decreasing
d-band
center
weakening
the
oxygen
adsorption.
Small,
Journal Year:
2024,
Volume and Issue:
20(43)
Published: July 2, 2024
Flexible
rechargeable
Zn-air
batteries
(FZABs)
exhibit
high
energy
density,
ultra-thin,
lightweight,
green,
and
safe
features,
are
considered
as
one
of
the
ideal
power
sources
for
flexible
wearable
electronics.
However,
slow
overpotential
oxygen
reaction
at
air
cathode
has
become
key
factors
restricting
development
FZABs.
The
improvement
activity
stability
bifunctional
catalysts
a
top
priority.
At
same
time,
FZABs
should
maintain
battery
performance
under
different
bending
twisting
conditions,
design
overall
structure
is
also
important.
Based
on
understanding
three
typical
configurations
working
principles
FZABs,
this
work
highlights
two
common
strategies
applying
to
FZABs:
1)
powder-based
2)
self-supported
cathode.
It
summarizes
recent
advances
in
electrocatalysts
explores
various
types
catalyst
structures
well
related
mechanistic
understanding.
latest
research
advances,
paper
introduces
discusses
modulation
expects
guide
synthesis
preparation
efficient
catalysts.
Finally,
current
status
challenges
summarized.
