Advanced Energy Materials,
Год журнала:
2024,
Номер
14(44)
Опубликована: Сен. 2, 2024
Abstract
Zn‐based
catalytic
batteries,
recognized
as
eco‐friendly
alternatives,
are
attracting
significant
research
interest
for
their
applications
in
energy
storage,
conversion,
pollutant
degradation,
and
ammonia
synthesis.
This
review
compiles
the
latest
developments
Zn‐nitrogen
oxides
(NO
x
)
covering
various
types
including
Zn‐nitrate,
Zn‐nitric
oxide,
Zn‐nitrite
batteries.
study
explores
electrode
reactions
structural
evolutions
of
these
emphasizing
different
challenges
posed
by
cathodic
reactions.
Advanced
design
strategies
cathode
materials,
such
inhibiting
hydrogen
production,
utilizing
tandem
sites,
enhancing
reactant
enrichment,
presented
evaluated.
These
have
markedly
improved
NO
reduction
performance
driven
progress
Zn‐NO
battery.
The
future
directions
outlined,
highlighting
need
more
efficient
catalysts,
optimization
Zn
anodes,
development
alternative
metal
battery
structure
improvements,
exploration
charging
Addressing
is
crucial
advancing
high‐energy‐density
Advanced Materials,
Год журнала:
2023,
Номер
36(17)
Опубликована: Июнь 9, 2023
Natural
nitrogen
cycle
has
been
severely
disrupted
by
anthropogenic
activities.
The
overuse
of
N-containing
fertilizers
induces
the
increase
nitrate
level
in
surface
and
ground
waters,
substantial
emission
oxides
causes
heavy
air
pollution.
Nitrogen
gas,
as
main
component
air,
used
for
mass
ammonia
production
over
a
century,
providing
enough
nutrition
agriculture
to
support
world
population
increase.
In
last
decade,
researchers
have
made
great
efforts
develop
processes
under
ambient
conditions
combat
intensive
energy
consumption
high
carbon
associated
with
Haber-Bosch
process.
Among
different
techniques,
electrochemical
reduction
reaction
(NO
Energy & Fuels,
Год журнала:
2024,
Номер
38(8), С. 6701 - 6722
Опубликована: Апрель 8, 2024
Electrochemical
nitrate
reduction
is
the
process
of
converting
into
ammonia
or
nitrogen
using
electric
energy.
This
saves
energy,
protects
environment,
and
an
important
technology
for
resource
recovery
water
purification.
paper
examines
recent
advances
in
electrochemical
research
analyzes
reaction
mechanism
path
as
well
influence
various
factors
on
through
thermodynamic
kinetic
principles.
Second,
catalytic
performances
transition
metal
electrocatalysts
form
single
metals,
alloys,
oxides,
composites
are
analyzed
detail,
which
lays
foundation
rational
development
new,
efficient,
stable
electrocatalysts.
Finally,
future
directions
prospects
envisioned.
Although
the
electrocatalytic
nitrate
reduction
reaction
(NO3-
RR)
is
an
attractive
NH3
synthesis
route,
it
suffers
from
low
yield
due
to
lack
of
efficient
catalysts.
Here,
this
work
reports
a
novel
grain
boundary
(GB)-rich
Sn-Cu
catalyst,
derived
in
situ
electroreduction
Sn-doped
CuO
nanoflower,
for
effectively
electrochemical
converting
NO3-
.
The
optimized
Sn1%
-Cu
electrode
achieves
high
rate
1.98
mmol
h-1
cm-2
with
industrial-level
current
density
-425
mA
at
-0.55
V
versus
reversible
hydrogen
(RHE)
and
maximum
Faradaic
efficiency
98.2%
-0.51
RHE,
outperforming
pure
Cu
electrode.
In
Raman
attenuated
total
reflection
Fourier
transform
infrared
spectroscopies
reveal
pathway
RR
by
monitoring
adsorption
property
intermediates.
Density
functional
theory
calculations
clarify
that
high-density
GB
active
sites
competitive
evolution
(HER)
suppression
induced
Sn
doping
synergistically
promote
highly
selective
RR.
This
paves
avenue
over
catalyst
reconstruction
heteroatom
doping.
Abstract
Electrochemical
conversion
of
nitrate
(NO
3
−
)
to
ammonia
(NH
is
a
potential
way
produce
green
NH
and
remediate
the
nitrogen
cycle.
In
this
paper,
an
efficient
catalyst
spherical
CuO
made
by
stacking
small
particles
with
oxygen‐rich
vacancies
reported.
The
yield
Faraday
efficiency
are
15.53
mg
h
−1
cat
90.69%,
respectively,
in
neutral
electrolyte
at
voltage
‐0.80
V
(vs.
reversible
hydrogen
electrode).
high
activity
electrodes
results
from
changes
phase
structure
during
electrochemical
reduction.
Structurally,
there
shift
dense
accumulation
layered
network
uniform
distribution
stacked
on
top
each
other,
thus
exposing
more
active
sites.
Furthermore,
terms
phase,
electrode
transitions
Cu/Cu(OH)
2
.
Density
functional
theory
calculations
showed
that
Cu(OH)
formation
enhances
NO
‐
adsorption.
Meanwhile,
can
inhibit
competing
evolution
reaction,
while
Cu
(111)
crystal
surfaces
facilitates
hydrogenation
reaction.
synergistic
effect
between
two
promotes
Therefore,
study
provides
new
idea
direction
for
Cu‐based
oxides
electrocatalytic
production.
EES Catalysis,
Год журнала:
2023,
Номер
2(1), С. 202 - 219
Опубликована: Сен. 26, 2023
Electrocatalytic
nitrate
reduction
to
ammonia
offers
a
sustainable
approach
for
nitrogenous
waste
upcycling.
This
review
outlines
recent
advances
in
the
design
of
electrocatalysts
through
cross-scale
structural
engineering.
