Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
Inhibiting
the
deactivation
of
nickel‐based
catalysts
caused
by
self‐oxidation
and
competitive
adsorption
behavior
is
still
a
major
challenge
for
urea
oxidation
reaction
(UOR),
especially
under
industrial‐level
current
densities.
In
this
study,
crystalline
NiSe
2
/amorphous
NiFe‐LDH
(NiSe
/NiFe‐LDH)
heterojunction
catalyst
rationally
constructed
selective
electrocatalytic
UOR.
situ
Raman
spectra
ex
characterization
results
reveal
that
such
structure
can
tailor
impede
accumulation
NiOOH
species
during
UOR
process.
Density
function
theory
simulations
disclose
self‐driven
charge
transport
from
electron‐deficient
region
to
electron‐rich
would
induce
formation
local
electrophilic/nucleophilic
adsorb
electron‐donating
‐NH
electron‐withdrawing
C
=
O
groups,
respectively.
This
optimizes
molecules
hinders
overaccumulation
OH
−
ions
on
surface
/NiFe‐LDH,
which
beneficial
priority
occurrence
over
oxygen
evolution
(OER)
realization
high
selectivity.
Benefiting
tailored
favorable
adsorption,
/NiFe‐LDH
could
act
as
high‐selective
anode
achieve
ultrahigh
800
mAcm
−2
only
at
1.447
V.
Besides,
UV–vis
spectrophotometry
also
unveiled
has
capability
electrochemically
degrade
urea,
offering
great
promise
practical
application
potentials.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 7, 2025
Abstract
Overall
water
splitting
(OWS)
to
produce
hydrogen
has
attracted
large
attention
in
recent
years
due
its
ecological‐friendliness
and
sustainability.
However,
the
efficiency
of
OWS
been
forced
by
sluggish
kinetics
four‐electron
oxygen
evolution
reaction
(OER).
The
replacement
OER
alternative
electrooxidation
small
molecules
with
more
thermodynamically
favorable
potentials
may
fundamentally
break
limitation
achieve
production
low
energy
consumption,
which
also
be
accompanied
value‐added
chemicals
than
or
electrochemical
degradation
pollutants.
This
review
critically
assesses
latest
discoveries
coupled
various
OWS,
including
alcohols,
aldehydes,
amides,
urea,
hydrazine,
etc.
Emphasis
is
placed
on
corresponding
electrocatalyst
design
related
mechanisms
(e.g.,
dual
hydrogenation
N–N
bond
breaking
hydrazine
C═N
regulation
urea
inhibit
hazardous
NCO
−
NO
productions,
etc.),
along
emerging
reactions
(electrooxidation
tetrazoles,
furazans,
iodide,
quinolines,
ascorbic
acid,
sterol,
trimethylamine,
etc.).
Some
new
decoupled
electrolysis
self‐powered
systems
are
discussed
detail.
Finally,
potential
challenges
prospects
highlighted
aid
future
research
directions.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(44)
Published: Aug. 28, 2024
Photo-assisted
Zn-air
batteries
can
accelerate
the
kinetics
of
oxygen
reduction
and
evolution
reactions
(ORR/OER);
however,
challenges
such
as
rapid
charge
carrier
recombination
continuous
electrolyte
evaporation
remain.
Herein,
for
first
time,
piezoelectric
catalysis
is
introduced
in
a
photo-assisted
battery
to
improve
separation
capability
ORR/OER
photoelectric
cathode.
The
designed
microhelical
catalyst
exploits
simple
harmonic
vibrations
regenerate
built-in
electric
field
continuously.
Specifically,
presence
low-frequency
kinetic
energy
that
occurs
during
water
flow,
piezoelectric-photocoupling
poly(vinylidene
fluoride-co-trifluoroethylene)@ferric
oxide(Fe@P(V-T))
periodically
deformed,
generating
constant
reconfiguration
separates
photogenerated
electrons
holes
Further,
on
exposure
microvibrations,
gap
between
discharge
potentials
Fe@P(V-T)-based
reduced
by
1.7
times
compared
without
assistance,
indicating
highly
effective
enhancing
photocatalytic
efficiency.
This
study
provides
thorough
understanding
coupling
polarization
strategy
storage
opens
fresh
perspective
investigation
multi-field
coupling-assisted
batteries.
Energy Reviews,
Journal Year:
2024,
Volume and Issue:
4(1), P. 100105 - 100105
Published: Aug. 10, 2024
Hydrogen
production
via
electrochemical
water
splitting
demands
high
working
voltages
(>1.23
V)
and
hence
incurs
electricity
costs,
encumbering
its
large-scale
applications.
The
development
of
more
high-efficiency
electricity-saving
systems
for
hydrogen
is
great
significance.
Hydrazine
oxidation
reaction
(HzOR)-assisted
technology,
which
constructed
by
replacing
the
anodic
oxygen
evolution
in
pure
electrolysis
with
HzOR,
can
greatly
reduce
voltage
consumption,
shows
application
prospects.
In
recent
years,
numerous
studies
have
focused
on
designing
various
bifunctional
electrocatalysts
to
simultaneously
catalyze
cathodic
reactions
HzOR-assisted
systems.
However,
comprehensive
reviews
summarizing
commenting
this
field
are
scarce.
This
review
provides
a
systematic
insightful
overview
developments
technology
from
2017
present,
primarily
focusing
catalyst
design
strategies,
catalytic
mechanisms,
economic
analysis.
Additionally,
discusses
several
challenges
outlines
future
research
directions
attract
researchers'
attention
accelerate
potential
applications
technology.
Nano Letters,
Journal Year:
2025,
Volume and Issue:
25(2), P. 828 - 836
Published: Jan. 6, 2025
Through
hydrogenation
and
N-N
coupling,
azobenzene
can
be
produced
via
highly
selective
electrocatalytic
nitrobenzene
reduction,
offering
a
mild,
cost-effective,
sustainable
industrial
route.
Inspired
by
the
density
functional
theory
calculations,
introduction
of
H*
active
Ni2P
into
CoP,
which
reduces
water
dissociation
energy
barrier,
optimizes
adsorption,
moderates
key
intermediates'
is
expected
to
assist
its
ability
for
one-step
electrosynthesizing
azobenzene.
A
self-supported
NiCo@Ni2P/CoP
nanorod
array
electrode
was
synthesized,
featuring
NiCo
alloy
nanoparticles
within
Ni2P/CoP
shell.
By
virtue
thermodynamically
optimal
heterostructure,
along
with
overall
fast
electron
transport
in
core-shell
integrated
electrode,
abundant
interfacial
structure
attains
great
conversion
94.3%,
especially
prominent
selectivity
97.2%,
Faradaic
efficiency
94.1%
at
-0.9
V
(vs
Hg/HgO).
High-purity
crystals
also
self-separate
under
refrigeration
postelectrolysis.
This
work
provides
an
energy-efficient
scalable
pathway
economical
preparation
hydrogenation.
