ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(45), P. 16613 - 16621
Published: Oct. 28, 2024
Layered
P2-type
Na0.67MnO2,
a
crucial
category
of
cathode
material
for
sodium-ion
batteries
(SIBs),
faces
numerous
challenges,
including
its
poor
structural
stability
and
Mn3+
dissolution,
which
result
in
an
inadequate
performance.
Herein,
the
modified
Na0.67MnO2
with
Co
doping
was
synthesized
by
coprecipitation
method,
has
hierarchical
flake
structure
consisting
multiple-layer
oriented
stacking
nanosheets.
A
systematic
investigation
conducted
to
examine
influence
on
crystal
electrochemical
performance
Na0.67MnO2.
The
optimal
Na0.67Mn0.99Co0.01O2
exhibits
initial
discharge
specific
capacity
154.3
mA
h
g–1
at
0.1C
within
potential
window
2.0–4.0
V.
high
retention
90.3%
1C
after
100
cycles
maintains
61.2
even
500
5C.
superior
is
derived
from
reasonable
geometrical
chemical
substitution,
can
enhance
interfacial
area
electrolyte
decrease
diffusion
energy
barrier
sodium
ions.
This
study
may
provide
guidance
designing
constructing
stable
as
high-performance
candidate
SIBs.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 21, 2025
Dendrite
growth,
corrosion,
and
hydrogen
evolution
are
major
issues
for
Zn
anodes,
which
seriously
hinder
the
further
practical
application
of
aqueous
zinc-ion
batteries.
To
address
these
issues,
Zirconium
Nitride
(ZrN)
layer
with
a
thickness
110
nm
is
uniformly
deposited
on
surface
anode
using
plasma-enhanced
atomic
deposition
(PE-ALD).
In/ex
situ
characterizations
verify
that
as-introduced
ZrN
has
excellent
anticorrosive
zincophilic
ability,
can
suppress
corrosion
evolution,
lower
nucleation
energy
barrier
Zn2+
deposition,
effectively
inhibit
dendrite
growth.
Theoretical
calculations
also
reveal
exhibits
significantly
higher
adsorption
capacity
compared
to
bare
Zn,
conducive
regulating
behavior.
This
innovative
interface
extends
battery
cycle
life
enhances
coulombic
efficiency.
Encouragingly,
under
current
density
5
mA
cm-2
areal
1
mAh
cm-2,
Zn@ZrN
symmetrical
cells
demonstrate
an
extraordinary
cycling
up
5000
h,
surpassing
other
reported
anodes
modified
by
films/coatings.
In
addition,
it
impressive
1200
h
at
cm-2.
The
full
Zn@ZrN||MnO2
retain
high
after
1000
cycles,
markedly
outperforming
conventional
Zn||MnO2
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 30, 2025
Abstract
Achieving
stable
zinc‐metal
anodes
is
pivotal
to
realizing
high‐performance
aqueous
batteries
(AZMBs).
The
construction
of
a
functional
polymer
interface
layer
on
the
anode
surface
confirmed
as
an
effective
strategy
for
mitigating
dendrite
growth
and
side
reactions,
thereby
significantly
enhancing
stability
anode.
However,
polymers
capable
withstanding
electrolyte
environments
over
long
term
typically
suffer
from
elevated
interfacial
impedance,
which
hinders
Zn
2+
transport.
Here,
pioneering
enabled
by
with
high‐efficiency
ion
transport
introduced.
This
polymerized
in
situ
through
innovative
redox
initiation
system,
where
zinc
trifluoromethanesulfonate
(Zn(OTf)
2
)
salts
function
both
reductant
pre‐pathways,
ensuring
resultant
achieves
ideal
balance
ionic
conductivity,
water
resistance,
adhesion,
mechanical
properties,
effectively
suppressing
reactions.
Symmetric
cells
assembled
this
deliver
impressive
lifespan
8800
1600
h
under
1
5
mA
cm
−2
,
respectively.
further
demonstrates
exceptional
feasibility
versatility
Zn‐NVO
Zn‐PANI
batteries.
work
provides
groundbreaking
insights
into
strategic
design
layers
AZMBs.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(45), P. 16613 - 16621
Published: Oct. 28, 2024
Layered
P2-type
Na0.67MnO2,
a
crucial
category
of
cathode
material
for
sodium-ion
batteries
(SIBs),
faces
numerous
challenges,
including
its
poor
structural
stability
and
Mn3+
dissolution,
which
result
in
an
inadequate
performance.
Herein,
the
modified
Na0.67MnO2
with
Co
doping
was
synthesized
by
coprecipitation
method,
has
hierarchical
flake
structure
consisting
multiple-layer
oriented
stacking
nanosheets.
A
systematic
investigation
conducted
to
examine
influence
on
crystal
electrochemical
performance
Na0.67MnO2.
The
optimal
Na0.67Mn0.99Co0.01O2
exhibits
initial
discharge
specific
capacity
154.3
mA
h
g–1
at
0.1C
within
potential
window
2.0–4.0
V.
high
retention
90.3%
1C
after
100
cycles
maintains
61.2
even
500
5C.
superior
is
derived
from
reasonable
geometrical
chemical
substitution,
can
enhance
interfacial
area
electrolyte
decrease
diffusion
energy
barrier
sodium
ions.
This
study
may
provide
guidance
designing
constructing
stable
as
high-performance
candidate
SIBs.
