RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(48), P. 35704 - 35714
Published: Jan. 1, 2024
Introducing
NiFeMn-Layered
Double
Hydroxide
(LDH)
as
an
innovative
cathode
material
for
Zn-Mn
batteries,
this
study
focuses
on
bolstering
the
electrochemical
efficiency
and
stability
of
system.
We
explored
effect
varying
Zn/Mn
molar
ratio
in
electrolyte
battery's
performance
investigated
underlying
reaction
mechanism.
Our
results
show
that
4
:
1
achieves
a
balance
between
capacity
stability,
with
areal
0.20
mA
h
cm
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
MnO
2
‐based
cathode
aqueous
rechargeable
zinc‐ion
batteries
(ZIBs)
have
favorable
sustainability
characteristics
and
are
considered
potential
candidates
for
low‐cost
effective,
high‐safety
energy
storage
systems.
Nevertheless,
the
development
of
them
has
been
hampered
by
unstable
electrode
structures
ambiguous
charge
mechanisms.
Herein,
role
doping
Fe
3+
Co
2+
into
δ‐MnO
materials
(FMO,
CMO)
is
comprehensively
probed
working
mechanism
Zn//FMO,
Zn//CMO
studied
using
in
situ
ex
characterization,
electrochemical
analysis,
theoretical
calculations.
Metal
cations
can
partially
replace
Mn
to
form
M─O
bonds
enhance
structural
stability
as
well
redox
activity
.
It
found
that
effectively
modulates
interaction
between
Zn
/H
+
structure
inhibits
formation
ZnMn
O
4
(ZMO)
by‐products
confers
fast
diffusion
ability
The
reactions
FMO
CMO
mainly
via
H
/Zn
intercalation/deintercalation
accompanied
OTF‐base‐like
double
hydroxide
x
(OTF)
y
(OH)
2x‐y
‐nH
(Z‐LDH)
deposition/dissolution.
This
research
enriches
fundamental
comprehension
ZIBs
reveals
way
modify
electrodes
performance
enhancement.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 19, 2025
Abstract
Manganese‐based
oxides
have
been
identified
as
promising
cathodes
for
aqueous
zinc‐ion
batteries
(AZIBs)
due
to
their
high
theoretical
energy
density
and
cost‐effectiveness.
However,
low
electronic
conductivity
tendency
dissolve
during
cycling
limited
applications
in
AZIBs.
Herein,
a
one‐step
calcination
method
is
proposed
incorporate
sulfur
nitrogen
anions
into
the
MnO
2
structure
(referred
NS‐MnO
).
Characterizations
calculations
confirm
that
dopants
improve
intrinsic
structural
stability
of
.
Specifically,
doping
accelerates
diffusion
Zn
2+
,
while
formation
Mn─N
bonds
strengthens
Mn─O
bonds,
thereby
stabilizing
cycling.
In
addition,
process
creates
oxygen
vacancies
facilitate
kinetics.
As
result,
demonstrates
specific
capacity
295
mAh
g
‒1
at
current
0.2
A
exhibits
120
1
over
1500
cycles.
This
study
highlights
effectiveness
dual
modifying
transition
metal
suggests
its
potential
application
designing
other
materials
storage.
Energy Materials,
Journal Year:
2024,
Volume and Issue:
4(4)
Published: May 6, 2024
Aqueous
Zn
batteries
(AZBs)
have
emerged
as
a
highly
promising
technology
for
large-scale
energy
storage
systems
due
to
their
eco-friendly,
safe,
and
cost-effective
characteristics.
The
current
requirements
high-energy
AZBs
attract
extensive
attention
reasonably
designed
cathode
materials
with
multi-electron
transfer
mechanisms.
This
review
systematically
overviews
the
development
challenges
of
typical
hosts
capable
multiple
electron
reactions
high-performance
batteries.
Moreover,
we
also
summarize
how
trigger
chemistry
cathodes,
including
transition
metal
oxides,
halogens,
organics,
further
boost
capability
AZBs.
Finally,
perspectives
on
critical
issues
future
directions
battery
offer
novel
insights
advanced
Materials,
Journal Year:
2024,
Volume and Issue:
17(13), P. 3327 - 3327
Published: July 5, 2024
Manganese
oxides
(MnxOy)
are
considered
a
promising
cathode
material
for
aqueous
zinc-ion
batteries
(AZIBs)
due
to
their
high
theoretical
specific
capacity,
various
oxidation
states
and
crystal
phases,
environmental
friendliness.
Nevertheless,
practical
application
is
limited
by
intrinsic
poor
conductivity,
structural
deterioration,
manganese
dissolution
resulting
from
Jahn–Teller
distortion.
To
address
these
problems,
doping
engineering
thought
be
favorable
modification
strategy
optimize
the
structure,
chemistry,
composition
of
boost
electrochemical
performance.
In
this
review,
latest
progress
on
doped
MnxOy-based
cathodes
AZIBs
has
been
systematically
summarized.
The
contents
review
as
follows:
(1)
classification
cathodes;
(2)
energy
storage
mechanisms
(3)
synthesis
route
role
in
(4)
AZIBs.
Finally,
development
trends
described.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 13, 2025
Abstract
Proton
insertion
mechanism
with
fast
reaction
kinetics
is
attracting
more
and
attention
for
high‐rate
durable
aqueous
Zn─MnO
2
batteries.
However,
hydrated
Zn
2+
accompanied
Jahn–Teller
effect
Mn
3+
disproportionation
generally
leads
to
sluggish
rate
capability
irreversible
structure
transformation.
Here,
carboxyl‐carbon
nanotubes
supported
α‐MnO
nanoarrays
(C─MnO
)
cathode
successfully
fabricated
by
a
convent
grinding
process
high‐performance
Specifically,
the
(CNTs)
skeleton
endows
shorter
ion
diffusion
route
active
sites
proton
adsorption,
benefiting
electron
transport
reversible
evolution
of
MnO
.
More
importantly,
electronegative
carboxyl
groups
Mn─O─C
interfacial
bonds
can
effectively
restrain
dissolution
shuttle
improved
structural
integrity
redox
reactivity.
Consequently,
C─MnO
exhibits
high
capacity,
superior
capability,
outstanding
cycling
stability
over
10
000
cycles.
Even
at
ultra‐high
mass
loading
(20
mg
cm
−2
),
Zn//C─MnO
punch
cell
displays
excellent
capacity
(202
mAh)
94.5%
retention
after
114
cycles,
providing
new
insights
practical
application
advanced
Zn‐Mn
