Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: Nov. 26, 2024
Rechargeable
aqueous
alkaline
Zn-Ni
batteries
(AZNBs)
are
considered
a
potential
contender
for
energy
storage
fields
and
portable
devices
due
to
their
inherent
safety,
high
output
voltage,
theoretical
capacity
environmental
friendliness.
Despite
the
facilitated
development
of
AZNBs
by
many
investigations,
its
practical
application
is
still
restricted
inadequate
density,
sluggish
kinetics,
poor
stability.
Therefore,
Ni-based
cathodes
with
boosted
redox
chemistry
enhanced
structural
integrity
essential
high-performance
AZNBs.
Herein,
this
review
focus
on
critical
bottlenecks
effective
design
strategies
representative
cathode
materials.
Specifically,
nanostructured
optimization,
defect
engineering,
ion
doping,
heterostructure
regulation
ligand
engineering
have
been
employed
from
fundamental
aspects
high-energy
long-lifespan
cathodes.
Finally,
further
exploration
in
failure
mechanism,
binder-free
battery
configurations,
scenarios,
as
well
recycling
valuable
directions
future
advanced
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(20), P. 26226 - 26233
Published: May 9, 2024
Sodium-oxygen
batteries
are
emerging
as
a
new
energy
storage
system
because
of
their
high
density
and
low
cost.
However,
the
cycling
performance
battery
is
not
satisfying
due
to
its
insulating
discharge
product.
Here,
we
synthesized
metallic
phosphides
with
gradient
concentration
(g-CoNiFe-P)
uniform
counterpart
(CoNiFe-P)
cathode
catalysts
in
Na-O2
battery.
Notably,
distribution
relaxation
time
(DRT)
was
utilized
identify
rate-determining
step
battery,
evaluate
catalytic
catalysts,
monitor
change
every
single
electrochemical
process
along
whole
study
degradation
mechanism.
The
g-CoNiFe-P
catalyst
presented
better
initial
capacity
performances.
evolution
kinetic
processes
resulting
has
been
investigated
by
DRT
analysis,
which
assists
characterizations.
Our
work
demonstrates
application
diagnosis
changes
different
systems.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(17), P. 16610 - 16621
Published: July 16, 2024
Mercury,
a
toxic
heavy
metal,
poses
significant
risks
to
human
health.
Coal-fired
power
plants
are
the
largest
anthropogenic
sources
of
mercury
emissions,
making
removal
from
flue
gas
imperative.
Among
various
adsorbents,
metal
selenides
show
promising
potential
in
capture.
Here,
we
reported
synthesis
novel
three-dimensional
hierarchical
flower-like
material,
SnSe2,
and
its
debut
application
Under
influence
low-coordinated
selenium,
introduction
abundant
selenium
vacancy
defects
led
exposure
additional
active
sites
adsorbent.
Additionally,
presence
Sn
enhanced
selectivity
promoted
electron
transfer
processes,
thereby
augmenting
Hg0
adsorption
oxidation
performance.
Benefiting
these
advantages,
SnSe2
exhibited
superior
performance
over
wide
temperature
range
(30–180
°C),
with
saturated
capacity
2027.23
μg/g,
surpassing
that
commercial
activated
carbon.
Furthermore,
NO
improved
performance,
while
high
concentrations
SO2
do
not
affect
efficiency,
as
elucidated
by
kinetics
models.
Moreover,
mechanism
was
demonstrated
through
temperature-programmed
desorption
(Hg-TPD)
density
functional
theory
(DFT)
calculations.
Finally,
toxicity
characteristic
leaching
procedure
(TCLP)
experiments
confirmed
an
efficient
permanent
adsorbent
for
mercury,
offering
insights
into
materials.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
Abstract
Rechargeable
magnesium‐selenium
(Mg‐Se)
batteries
are
characterized
by
high
theoretical
volumetric
specific
capacity,
good
cycling
stability,
and
economical
effectiveness.
However,
great
challenges
including
limited
low
Coulombic
efficiency,
short
cycle
life
encountered
due
to
sluggish
electrochemical
kinetics
severe
polyselenide
shuttles.
Herein,
the
active
Se
is
encapsulated
in
hollow
V
2
O
3
microspheres
then
connected
reduced
graphene
oxide
(rGO)
conductive
network
as
mixed‐dimensional
cathode
materials
accelerate
reversible
redox
chemistry
for
high‐performance
Mg‐Se
batteries.
Rich
oxygen
vacancies
generated
within
porous
during
their
phase
transformation
under
reductive
atmosphere.
The
unique
three‐/two‐dimensional
(3D/2D)
heterostructure
of
Se‐loaded
(Se‐V
/G‐Vo)
can
facilitate
Mg
2+
diffusion
charge
transfer,
also
provide
rich
reaction
sites
conversion.
Additionally,
defect‐rich
structure
deliver
strong
adsorption
ability
abundant
catalytic
Consequently,
Se‐V
/G‐Vo
show
capacity
580
mAh
g
−1
with
99.1%
retention
at
200
mA
current
density
after
80
cycles.
This
work
should
enlighten
design
concept
metal
Se‐based
high‐rate
long‐life
Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: Nov. 26, 2024
Rechargeable
aqueous
alkaline
Zn-Ni
batteries
(AZNBs)
are
considered
a
potential
contender
for
energy
storage
fields
and
portable
devices
due
to
their
inherent
safety,
high
output
voltage,
theoretical
capacity
environmental
friendliness.
Despite
the
facilitated
development
of
AZNBs
by
many
investigations,
its
practical
application
is
still
restricted
inadequate
density,
sluggish
kinetics,
poor
stability.
Therefore,
Ni-based
cathodes
with
boosted
redox
chemistry
enhanced
structural
integrity
essential
high-performance
AZNBs.
Herein,
this
review
focus
on
critical
bottlenecks
effective
design
strategies
representative
cathode
materials.
Specifically,
nanostructured
optimization,
defect
engineering,
ion
doping,
heterostructure
regulation
ligand
engineering
have
been
employed
from
fundamental
aspects
high-energy
long-lifespan
cathodes.
Finally,
further
exploration
in
failure
mechanism,
binder-free
battery
configurations,
scenarios,
as
well
recycling
valuable
directions
future
advanced
