ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 11, 2025
Transition-metal
dichalcogenides
(TMDs),
such
as
molybdenum
disulfide
(MoS2),
have
emerged
a
generation
of
nonprecious
catalysts
for
the
hydrogen
evolution
reaction
(HER),
largely
due
to
their
theoretical
adsorption
energy
close
that
platinum.
However,
efforts
activate
basal
planes
TMDs
primarily
centered
around
strategies
introducing
numerous
atomic
vacancies,
creating
vacancy–heteroatom
complexes,
or
applying
significant
strain,
especially
acidic
media.
These
approaches,
while
potentially
effective,
present
substantial
challenges
in
practical
large-scale
deployment.
Here,
we
report
gap-state
engineering
strategy
controlled
activation
S
atom
MoS2
through
metal
single-atom
doping,
effectively
tackling
both
efficiency
and
stability
alkaline
water
seawater
splitting.
A
versatile
synthetic
methodology
allows
fabrication
series
single-metal
atom-doped
materials
(M1/MoS2),
featuring
widely
tunable
densities
with
each
dopant
replacing
Mo
site.
Among
these
(Mn1,
Fe1,
Co1,
Ni1),
Co1/MoS2
demonstrates
outstanding
HER
performance
media,
overpotentials
at
mere
159
164
mV
100
mA
cm–2,
Tafel
slopes
41
45
dec–1,
respectively,
which
surpasses
all
reported
TMD-based
benchmark
Pt/C
during
splitting,
can
be
attributed
an
optimal
modulation
associated
sulfur
atoms.
Experimental
data
correlating
doping
density
identity
performance,
conjunction
calculations,
also
reveal
descriptor
linked
near-Fermi
gap
state
modulation,
corroborated
by
observed
increase
unoccupied
3p
states.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(25)
Published: April 11, 2023
The
development
of
rechargeable
zinc-air
batteries
is
heavily
dependent
on
bifunctional
oxygen
electrocatalysts
to
offer
exceptional
reduction/evolution
reaction
(ORR/OER)
activities.
However,
the
design
such
with
high
activity
and
durability
challenging.
Herein,
a
strategy
proposed
create
an
electrocatalyst
comprised
copper-cobalt
diatomic
sites
highly
porous
nitrogen-doped
carbon
matrix
(Cu-Co/NC)
abundantly
accessible
metal
optimal
geometric
electronic
structures.
Experimental
findings
theoretical
calculations
demonstrate
that
synergistic
effect
Cu-Co
dual-metal
metal-N4
coordination
induce
asymmetric
charge
distributions
moderate
adsorption/desorption
behavior
intermediates.
This
exhibits
extraordinary
electrocatalytic
activities
in
alkaline
media,
half-wave
potential
0.92
V
for
ORR
low
overpotential
335
mV
at
10
mA
cm-2
OER.
In
addition,
it
demonstrates
acidic
(0.85
V)
neutral
(0.74
media.
When
applied
battery,
achieves
operational
performance
outstanding
(510
h),
ranking
as
one
most
efficient
reported
date.
work
importance
engineering
isolated
boosting
electrochemical
energy
devices.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(4)
Published: Oct. 23, 2023
Abstract
Microwave
absorption
materials
(MAMs)
are
originally
developed
for
military
purposes,
but
have
since
evolved
into
versatile
with
promising
applications
in
modern
technologies,
including
household
use.
Despite
significant
progress
bench‐side
research
over
the
past
decade,
MAMs
remain
limited
their
scope
and
yet
to
be
widely
adopted.
This
review
explores
history
of
from
first‐generation
coatings
second‐generation
functional
absorbers,
identifies
bottlenecks
hindering
maturation.
It
also
presents
potential
solutions
such
as
exploring
broader
spatial
scales,
advanced
characterization,
introducing
liquid
media,
utilizing
novel
toolbox
(machine
learning,
ML),
proximity
lab
end‐user.
Additionally,
it
meticulously
compelling
medicine,
mechanics,
energy,
optics,
sensing,
which
go
beyond
efficiency,
along
current
development
status
prospects.
interdisciplinary
direction
differs
previous
primarily
focused
on
meeting
traditional
requirements
(i.e.,
thin,
lightweight,
wide,
strong),
can
defined
next
generation
smart
absorbers.
Ultimately,
effective
utilization
ubiquitous
electromagnetic
(EM)
waves,
aided
by
third‐generation
MAMs,
should
better
aligned
future
expectations.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(40)
Published: Aug. 15, 2023
Abstract
Heteroatom
doping
has
emerged
as
a
highly
effective
strategy
to
enhance
the
activity
of
metal‐based
electrocatalysts
toward
oxygen
evolution
reaction
(OER).
It
is
widely
accepted
that
does
not
switch
OER
mechanism
from
adsorbate
(AEM)
lattice‐oxygen‐mediated
(LOM),
and
enhanced
attributed
optimized
binding
energies
intermediates.
However,
this
seems
inconsistent
with
fact
overpotential
doped
(<300
mV)
considerably
smaller
than
limit
AEM
(>370
mV).
To
determine
origin
inconsistency,
we
select
phosphorus
(P)‐doped
nickel‐iron
mixed
oxides
model
observe
enhances
covalency
metal‐oxygen
bonds
drive
pathway
transition
LOM,
thereby
breaking
adsorption
linear
relation
between
*OH
*OOH
in
AEM.
Consequently,
obtained
P‐doped
display
small
237
mV
at
10
mA
cm
−2
.
Beyond
P,
similar
also
observed
on
sulfur
doping.
These
findings
offer
new
insights
into
substantially
originating
heteroatom
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(30)
Published: April 17, 2023
A
conventional
two-electrode
rechargeable
zinc-air
battery
(RZAB)
has
two
major
problems:
1)
opposing
requirements
for
the
oxygen
reduction
(ORR)
and
evolution
(OER)
reactions
from
catalyst
at
air
cathode;
2)
zinc-dendrite
formation,
hydrogen
generation,
zinc
corrosion
anode.
To
tackle
these
problems,
a
three-electrode
RZAB
(T-RZAB)
including
hydrophobic
discharge
cathode,
hydrophilic
charge
zinc-free
anode
is
developed.
The
decoupled
cathodes
enable
fast
ORR
OER
kinetics,
avoid
oxidization
of
catalyst.
using
tin-coated
copper
foam
that
induces
growth
(002)Zn
planes,
suppresses
evolution,
prevents
Zn
corrosion.
As
result,
T-RZABs
have
high
capacity
per
cycle
800
mAh
cm-2
,
low
voltage
gap
between
discharge/charge
platforms
0.66
V,
an
ultralong
life
5220
h
current
density
10
mA
.
large
T-RZAB
with
Ah
no
obvious
degradation
after
cycling
1000
Finally,
pack
energy
151.8
Wh
kg-1
cost
46.7
US
dollars
kWh-1
assembled.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(28)
Published: June 11, 2023
Abstract
Designing
efficient
bifunctional
electrocatalysts
with
excellent
activity
and
robust
stability
presents
a
central
challenge
for
the
large‐scale
commercialization
of
water
electrolysis.
Herein,
facile
approach
is
reported
construct
atomically
thin
amorphous
RuM
(MCo,
Fe,
or
Ni)
bimetallenes
as
high‐performance
toward
both
electrochemical
hydrogen
evolution
reaction
(HER)
oxygen
(OER).
The
RuCo
bimetallene
manifests
characterized
by
low
required
overpotentials,
superior
price
activity,
durability
well
cell
potential
splitting
performance,
outperforming
Pt/C
RuO
2
benchmark
catalysts.
Combined
operando
X‐ray
absorption
spectroscopy
investigation
theoretical
simulations
reveal
synergism
taking
place
between
binary
constituents,
in
which
Co
serves
promotive
role
along
HER/OER
pathway,
contributing
via
optimal
binding
to
*OH
dissociation
modulating
Ru
electronic
structure
favorably,
hence
rendering
high
catalytic
centers
alkaline
HER
OER.
Science Advances,
Journal Year:
2023,
Volume and Issue:
9(26)
Published: June 28, 2023
Manipulating
the
intrinsic
activity
of
heterogeneous
catalysts
at
atomic
level
is
an
effective
strategy
to
improve
electrocatalytic
performances
but
remains
challenging.
Here,
atomically
dispersed
Ni
anchored
on
CeO2
particles
entrenched
peanut-shaped
hollow
nitrogen-doped
carbon
structures
(a-Ni/CeO2@NC)
rationally
designed
and
synthesized.
The
as-prepared
a-Ni/CeO2@NC
catalyst
exhibits
substantially
boosted
greatly
reduced
overpotential
for
oxygen
evolution
reaction.
Experimental
theoretical
results
demonstrate
that
decoration
isolated
species
over
induces
electronic
coupling
redistribution,
thus
resulting
in
activation
adjacent
Ce
sites
around
atoms
accelerated
kinetics.
This
work
provides
a
promising
explore
regulation
improvement
level,
thereby
improving
activity.
