Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(7), P. 2991 - 3001
Published: Jan. 1, 2023
Laser-constructed
CuNi
alloy
electrodes
with
tandem
sites
of
Ni
provide
H*
and
Cu
for
NO
3
−
reduction,
achieving
ampere-level
reduction
high-performance
Zn–NO
batteries.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(20), P. 19514 - 19525
Published: Oct. 9, 2023
Single-atom
catalysts
(SACs)
are
regarded
as
promising
non-noble-metal
alternatives
for
the
oxygen
reduction
reaction
(ORR)
in
proton
exchange
membrane
fuel
cells
due
to
their
high
atom
utilization
efficiency
and
excellent
catalytic
properties.
However,
insufficient
long-term
stability
issues
of
SACs
under
working
conditions
seriously
hinder
practical
application.
In
this
perspective,
recent
progress
with
optimized
ORR
activity
is
first
reviewed.
Then,
possible
degradation
mechanisms
process
effective
strategies
improving
durability
summarized.
Finally,
some
challenges
opportunities
proposed
develop
stable
single-atom-based
electrocatalysts
future.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(18), P. 12636 - 12644
Published: April 27, 2024
Orbital
hybridization
to
regulate
the
electronic
structures
and
surface
chemisorption
properties
of
transition
metals
is
great
importance
for
boosting
oxygen
reduction
reaction
(ORR)
in
proton-exchange
membrane
fuel
cells
(PEMFCs).
Herein,
we
developed
a
core–shell
rambutan-like
nanocarbon
catalyst
(FeAl-RNC)
with
atomically
dispersed
Fe–Al
atom
pairs
from
metal–organic
framework
(MOF)
material.
Experimental
theoretical
results
demonstrate
that
strong
p–d
orbital
between
Al
Fe
an
asymmetric
electron
distribution
moderate
adsorption
strength
intermediates,
rendering
enhanced
intrinsic
ORR
activity.
Additionally,
structure
FeAl-RNC
abundant
micropores
macropores
can
enhance
density
active
sites,
stability,
transport
pathways
PEMFC.
The
FeAl-RNC-based
PEMFC
achieves
excellent
activity
(68.4
mA
cm–2
at
0.9
V),
high
peak
power
(1.05
W
cm–2),
good
stability
only
7%
current
loss
after
100
h
0.7
V
under
H2–O2
condition.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: March 17, 2024
Abstract
The
oxygen
reduction
reaction
(ORR)
plays
a
fundamental
role
in
sustainable
energy
technologies.
However,
the
creation
of
non‐precious
metal
electrocatalysts
with
high
ORR
activity
and
durability
under
all
pH
conditions
is
great
significance
but
remains
challenging.
Herein,
aim
to
overcome
this
challenge
by
creating
Fe
single
atom
catalyst
on
2D
defect‐containing
nitrogen‐doped
carbon
support
(Fe
1
/DNC)
via
microenvironment
engineering
strategy.
Microkinetic
modeling
reveals
that
FeN
4
(OH)
moieties
are
real
active
sites
conditions.
Due
synergistic
promotion
effect
denser
accessible
defect‐induced
electronic
properties,
/DNC
achieves
extraordinary
alkaline,
acidic,
neutral
conditions,
half‐wave
potentials
0.95,
0.82,
0.70
V,
respectively.
Moreover,
negligible
performance
decay
observed
stability
methanol
tolerance
tests.
Zn‐air
battery
employing
delivers
remarkable
peak
power
density
long‐term
operational
durability.
Theoretical
analysis
provides
compelling
evidence
defects
adjacent
can
endow
an
inductive
reshape
properties
balance
OOH*
formation
OH*
reduction.
This
work
offers
insight
into
regulation
asymmetric
coordination
structure
for
boosting
electrocatalytic
stability.
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
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(29), P. 11188 - 11228
Published: Jan. 1, 2024
The
oxygen
reduction
reaction
(ORR)
is
a
key
component
for
many
clean
energy
technologies
and
other
industrial
processes.
However,
the
low
selectivity
sluggish
kinetics
of
ORR
catalysts
have
hampered
conversion
efficiency
real
application
these
new
mentioned
before.
Recently,
tremendous
efforts
been
made
in
mechanism
understanding,
electrocatalyst
development
system
design.
Here,
comprehensive
critical
review
provided
to
present
recent
advances
field
electrocatalytic
ORR.
two-electron
four-electron
transfer
catalytic
mechanisms
evaluation
parameters
are
discussed
first.
Then,
up-to-date
synthetic
strategies
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 7, 2025
Owing
to
their
synergistic
interactions,
dual-atom
catalysts
(DACs)
with
well-defined
active
sites
are
attracting
increasing
attention.
However,
more
experimental
research
and
theoretical
investigations
needed
further
construct
explicit
understand
the
synergy
that
facilitates
multistep
catalytic
reactions.
Herein,
we
precisely
design
a
series
of
asymmetric
selenium-based
comprise
heteronuclear
SeN2–MN2
(M
=
Fe,
Mn,
Co,
Ni,
Cu,
Mo,
etc.)
for
efficient
oxygen
reduction
reaction
(ORR).
Spectroscopic
characterisation
calculations
revealed
selenium
atoms
can
efficiently
polarise
charge
distribution
other
metal
through
short-range
regulation.
In
addition,
compared
Se
or
Fe
single-atom
sites,
SeFe
facilitate
in
conversion
energy
barrier
from
*O
*OH
via
coadsorption
intermediates.
Among
these
designed
catalysts,
selenium-iron
achieves
superior
alkaline
ORR
performance,
half-wave
potential
0.926
V
vs.
reversible
hydrogen
electrode.
SeN2–FeN2-based
Zn–air
battery
has
high
specific
capacity
(764.8
mAh
g−1)
maximum
power
density
(287.2
mW
cm−2).
This
work
may
provide
good
perspective
designing
DACs
improve
efficiency.
Dual-atom
precise
gaining
attention,
but
studies
optimise
construction
synergy.
Here
authors
report
dual-
atom
reaction.
