Nano Energy,
Journal Year:
2024,
Volume and Issue:
129, P. 109997 - 109997
Published: July 14, 2024
Hydrogen
holds
promise
for
slashing
emissions
in
energy
and
transportation
due
to
its
high
density
clean
combustion.
The
transition
hydrogen
fuel
encompasses
various
vehicles,
including
cars,
buses,
ships,
aircraft.
Proton
batteries
emerge
as
contenders
heavy-duty
leveraging
hydrogen's
potential
without
However,
realizing
stable,
cost-effective
generation
storage
on
an
industrial
scale
remains
a
formidable
engineering
hurdle.
In
this
review,
the
focus
is
of
two-dimensional
(2D)
materials
address
challenge.
These
offer
prospect
cost-efficient,
leak-free
even
under
atmospheric
pressure.
article
explores
recent
advancements
utilizing
2D
across
spectrum,
spanning
production,
storage,
conversion,
electrochemical
properties
relevant
proton
batteries.
Additionally,
it
delves
into
fundamental
aspects
crucial
applications
using
materials.
Noteworthy
attention
given
recently
developed
composite
exhibiting
exceptional
storage.
review
underscores
future
outlook
these
terms
large-scale
production
practical
implementation,
highlighting
their
revolutionize
technologies
renewable
sustainable
applications.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(20)
Published: April 3, 2024
Abstract
The
electrocatalytic
performance
of
MoNi‐based
nanomaterials
undergo
selenization
has
garnered
significant
interest
due
to
their
modified
electronic
structure,
while
still
posses
certain
challenges
for
obtained
bimetallic
selenides.
Here,
a
novel
electrocatalyst
NiMoO
4
@Mo
15
Se
19
/NiSe
2
core‐shell
is
constructed
promote
the
desorption
OOH
*
which
can
facilitate
water
oxidation
process.
nanoarrays
show
that
“cores”
are
mainly
nanorods
“shells”
selenides
nanoflakes,
super
architectures
expand
more
active
sites
and
accelerate
electron
transfer.
Moreover,
hybridization
interaction
between
Ni
3d,
Mo
4d,
4p
orbitals
leads
an
asymmetric
distribution
electric
clouds,
decreases
adsorption
energy
transformation
oxygen‐containing
species.
Electrochemical
data
displays
overpotentials
only
195
mV,
220
224
mV
oxygen
evolution
reaction
(OER)
in
alkaline
freshwater,
simulated
seawater,
natural
seawater.
current
density
decay
negligible
after
100
h
stability
at
about
1.46
V
with
three‐electrode
system
low
cost
unique
this
work
provide
constructive
solution
designing
efficient
stable
OER
catalysts
future.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
Hydrogen
oxidation
reaction
(HOR)
can
effectively
convert
the
hydrogen
energy
through
fuel
cells,
which
plays
an
increasingly
important
role
in
renewable
cycle.
Nevertheless,
when
electrolyte
pH
changes
from
acid
to
base,
even
with
platinum
group
metal
(PGM)
catalysts,
HOR
kinetics
declines
several
orders
of
magnitude.
More
critically,
pivotal
intermediates
and
interfacial
environment
during
intermediate
behaviors
on
alkaline
remains
controversial.
Therefore,
exploring
exceptional
PGM-based
electrocatalysts
identifying
mechanism
are
indispensable
for
promoting
commercial
development
cells.
Consequently,
fundamental
understanding
is
first
introduced,
emphases
adsorption/desorption
process
distinct
reactive
structure
catalytic
process.
Subsequently,
guidance
mechanism,
latest
advances
rational
design
advanced
(Pt,
Pd,
Ir,
Ru,
Rh-based)
catalysts
discussed,
focusing
correlation
between
electrocatalytic
performance.
Finally,
given
that
challenges
standing
HOR,
prospect
thorough
investigation
towards
emphatically
proposed.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(5)
Published: Nov. 7, 2023
Abstract
Developing
high‐performance
electrocatalysts
for
alkaline
hydrogen
oxidation
reaction
(HOR)
is
crucial
the
commercialization
of
anion
exchange
membrane
fuel
cells
(AEMFCs).
Here,
boron
interstitially
inserted
ruthenium
(B‐Ru/C)
synthesized
and
used
as
an
anode
catalyst
AEMFC,
achieving
a
peak
power
density
1.37
W
cm
−2
,
close
to
state‐of‐the‐art
commercial
PtRu
catalyst.
Unexpectedly,
instead
monotonous
decline
HOR
kinetics
with
pH
generally
believed,
inflection
point
behavior
in
pH‐dependent
on
B‐Ru/C
observed,
showing
anomalous
that
activity
under
electrolyte
surpasses
acidic
electrolyte.
Experimental
results
functional
theory
calculations
reveal
upshifted
d‐band
center
Ru
after
intervention
interstitial
can
lead
enhanced
adsorption
ability
OH
H
2
O,
which
together
reduced
energy
barrier
water
formation,
contributes
outstanding
performance
mass
1.716
mA
µg
PGM
−1
13.4‐fold
5.2‐fold
higher
than
Ru/C
Pt/C,
respectively.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(38)
Published: June 9, 2023
Abstract
Among
the
platinum‐group
metals,
ruthenium
(Ru),
with
a
low
water
dissociation
energy,
is
considered
promising
alternative
to
substitute
Pt
for
catalyzing
hydrogen
evolution
reaction
(HER).
However,
optimizing
adsorption–desorption
energies
of
H
*
and
OH
intermediates
on
Ru
catalytic
sites
extremely
desirable
but
remains
challenging.
Inspired
by
natural
characteristics
Mn‐oxygen
complex,
this
study
reports
design
compounds
coordinated
(MOC‐Ru)
deprotonated
oxophilic
microenvironments
modulating
promote
HER
kinetics.
Benefiting
from
unique
advantages
MOC
structures,
including
weakened
HOH
bond
at
interface,
electron
donation
ability,
deprotonation
capability,
MOC‐Ru
exhibits
overpotential
ultralong
stability
in
both
acidic
alkaline
electrolytes.
Experimental
observations
theoretical
calculations
elucidate
that
can
accelerate
kinetics
desorption
conditions
trigger
long‐range
spillover
2
‐release
acid
conditions.
The
outstanding
activity
membrane
electrolyzer
display
catalyst
holds
great
potential
as
cathode
‐production.
This
provides
essential
insights
into
crucial
roles
catalysis
offers
new
pathway
create
an
efficient
water‐splitting
cathode.
The Chemical Record,
Journal Year:
2023,
Volume and Issue:
23(4)
Published: Feb. 20, 2023
Abstract
Ru‐based
materials
hold
great
promise
for
substituting
Pt
as
potential
electrocatalysts
toward
water
electrolysis.
Significant
progress
is
made
in
the
fabrication
of
advanced
electrocatalysts,
but
an
in‐depth
understanding
engineering
methods
and
induced
effects
still
their
early
stage.
Herein,
we
organize
a
review
that
focusing
on
strategies
substantial
improvement
electrocatalytic
OER
HER
performance
catalysts,
including
geometric
structure,
interface,
phase,
electronic
size,
multicomponent
engineering.
Subsequently,
enhancement
catalytic
by
these
are
also
elucidated.
Furthermore,
some
representative
applications
well
presented.
Finally,
challenges
prospects
elaborated
future
synthesis
more
effective
catalysts
boost
application.
Nano Letters,
Journal Year:
2023,
Volume and Issue:
23(24), P. 11827 - 11834
Published: Dec. 11, 2023
Local
electric
field
induced
by
the
lightning-rod
effect
attracts
great
attention
for
regulating
local
microenvironment
and
electronic
properties
of
active
sites.
Nevertheless,
electric-field-assisted
applications
are
mainly
limited
to
metals
with
strong
surface
plasmonic
resonance
(e.g.,
Au,
Ag,
Cu).
Herein,
we
fabricate
RuCu
snow-like
nanosheets
(SNSs)
high-curvature
nanotips
enhancing
hydrogen
oxidation
reaction
(HOR)
evolution
(HER).
Theoretical
simulations
show
that
SNSs
can
induce
a
around
sharp
nanotips,
which
favors
accumulation
OH–
HOR
H+
HER.
Cu
incorporation
modulate
binding
strength
OH*
H*,
leading
significantly
enhanced
HER
performance.
Impressively,
mass
activity
alkaline
is
31.3
times
higher
than
nanocrystals
without
tips.
Besides,
required
overpotential
reaching
10
mA
cm–2
during
over
14.0
mV.
Small,
Journal Year:
2023,
Volume and Issue:
20(18)
Published: Dec. 6, 2023
Abstract
Efficient
bifunctional
hydrogen
electrocatalysis,
encompassing
both
evolution
reaction
(HER)
and
oxidation
(HOR),
is
of
paramount
significance
in
advancing
hydrogen‐based
societies.
While
non‐precious‐metal‐based
catalysts,
particularly
those
based
on
nickel
(Ni),
are
essential
for
alkaline
HER/HOR,
their
intrinsic
catalytic
activity
often
falls
short
expectations.
Herein,
an
internal
electric
field
(IEF)
strategy
introduced
the
engineering
heterogeneous
nickel‐vanadium
oxide
nanosheet
arrays
grown
porous
foam
(Ni‐V
2
O
3
/PNF)
as
electrocatalysts
electrocatalysis.
Strikingly,
Ni‐V
/PNF
delivers
10
mA
cm
−2
at
overpotential
54
mV
HER
a
mass‐specific
kinetic
current
19.3
A
g
−1
50
HOR,
placing
it
par
with
benchmark
20%
Pt/C,
while
exhibiting
enhanced
stability
electrolytes.
Density
functional
theory
calculations,
conjunction
experimental
characterizations,
unveil
that
interface
IEF
effect
fosters
asymmetrical
charge
distributions,
which
results
more
thermoneutral
adsorption
Gibbs
free
energy
electron‐deficient
Ni
side,
thus
elevating
overall
efficiency
HOR.
The
discoveries
reported
herein
guidance
provided
further
understanding
designing
efficient
through
strategy.
