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:
2024,
Volume and Issue:
20(45)
Published: July 22, 2024
Abstract
The
development
of
Zn‐ion
batteries
(ZIBs)
is
always
hindered
by
the
ruleless
interface
reactions
between
solid
electrode
and
liquid
electrolyte,
seeking
appropriate
electrolyte
additives
considered
as
a
valid
approach
to
stabilize
electrode/electrolyte
interphases
for
high‐performance
ZIBs.
Benefiting
from
unique
solubility
TiOSO
4
in
acidic
solution,
composite
2
m
ZnSO
+30
(ZSO/TSO)
configured
its
positive
contribution
Zn//Zn
cells,
Zn//Cu
Zn//NH
V
O
10
are
comprehensively
investigated
electrochemical
tests
theoretical
calculations.
Based
on
calculations,
introduction
contributes
facilitating
desolvation
kinetics
Zn
2+
ions
guarantees
stable
both
zinc
anode
NH
cathode.
As
expected,
cells
keep
long‐term
cycling
behavior
3750
h
under
test
condition
1
mA
cm
−2
–1
mAh
,
deliver
high
Coulombic
efficiency
99.9%
1000
cycles
5
maintain
reversible
specific
capacity
193.8
g
−1
after
1700
at
A
ZSO/TSO
electrolyte.
These
satisfactory
results
manifest
that
additive
holds
great
potential
improve
performances
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Abstract
Aqueous
zinc
ion
batteries
(AZIBs)
have
garnered
significant
attention
due
to
their
advantages,
including
high
safety,
a
straightforward
manufacturing
process,
abundant
resource
availability,
and
theoretical
capacity.
Nevertheless,
the
industrial
application
of
AZIBs
is
impeded
by
undesirable
growth
dendrites
side
reactions
on
Zn
anode.
In
this
study,
[3‐(trimethoxysilyl)
propyl]
urea
(3TMS)
utilized
as
an
electrolyte
additive
develop
solid/electrolyte
interphase
(SEI)
film
surface
The
in
situ
formed
SEI
layer
not
only
prevents
form
direct
contact
anode
with
water
but
also
induces
preferential
deposition
along
(002)
crystal
plane,
suppressing
dendrite
growth.
These
synergistic
functions
enable
ultralong
cycle
life
over
6000
h
at
current
density
1
mA
cm
−2
areal
capacity
mAh
,
well
coulombic
efficiency
99.34%
after
750
cycles.
Moreover,
Zn//V
2
O
5
full
cells
3TMS
display
specific
114.4
g
−1
0.5
A
1000
This
work
provides
simple
yet
feasible
approach
stable
toward
high‐performance
AZIBs.
