Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 14, 2025
Aqueous
rechargeable
manganese
(Mn)-ion
batteries
have
recently
emerged
as
a
promising
candidate
for
multivalent
ion
batteries.
However,
challenges
remain,
particularly
in
expanding
the
electrolyte's
voltage
window
and
identifying
compatible
anode
materials.
Herein,
we
introduce
Mn-ion
full
battery
comprising
nickel
hexacyanoferrate
(NiHCF)
cathode,
perylene-3,4,9,10-tetracarboxylic
diimide
(PTCDI)
anode,
novel
hydrated
eutectic
electrolyte
formulated
from
Mn(ClO4)2·6H2O
acetamide.
This
composition,
optimized
molar
ratio,
provides
stable
solvation
structure
that
suppresses
water
reactivity
supports
high
ionic
conductivity,
confirmed
by
spectroscopic
molecular
dynamics
analyses.
The
PTCDI
facilitates
highly
reversible
Mn2+
storage
via
unique
enolization
redox
reaction,
delivering
exceptional
rate
capability
cycling
stability.
As
result,
NiHCF||PTCDI
achieves
1.2
V
plateau,
excellent
performance
(up
to
5.0
A
g-1),
long
life
with
95.6%
capacity
retention
over
1200
cycles
at
1.0
g-1.
study
proposes
feasible
strategy
construction
of
environment-friendly,
long-life
low-cost
aqueous
batteries,
offering
sustainable
high-performance
solution
future
energy
applications.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
Aqueous
batteries
have
garnered
considerable
attention
because
of
their
cost‐effectiveness,
sufficient
capacity,
and
non‐flammable
water‐based
electrolytes.
Among
these,
manganese
are
particularly
attractive
owing
to
stability,
abundance,
affordability,
higher
energy
density.
With
a
lower
redox
potential
(Mn:
−1.19
V
vs
SHE)
than
zinc
(Zn:
−0.76
SHE),
theoretically
offer
superior
density
over
traditional
zinc‐based
systems.
In
this
study,
LiFePO
4
is
introduced
as
cathode
material
in
aqueous
manganese‐based
hybrid
for
the
first
time.
Through
electrochemical
characterization
advanced
structural
spectroscopic
analyses,
charge
storage
mechanisms
protons
FePO
elucidated.
Cation
diffusion
pathways
also
investigated
via
barrier
calculations.
This
study
presents
with
good
stability
capacity
≈109.2
mAh
g
−1
at
40
mA
,
alongside
cycle
retention
42.1%
after
3000
cycles
320
.
Furthermore,
an
Mn
2+
/Li
+
battery,
achieving
≈1.6
durability
(81.5%
@
1000th),
proposed.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 28, 2025
Abstract
Manganese
batteries
garnered
significant
attention
as
sustainable
and
cost‐effective
alternatives
to
lithium‐ion
batteries.
For
the
first
time,
manganese
are
demonstrated
using
a
hexacyanoferrate
cathode
organic
electrolyte
solution,
specifically
saturated
Mn(ClO₄)₂
in
acetonitrile.
The
exhibits
an
average
operating
voltage
of
1.7
V
discharge
capacity
73.4
mAh
g
−1
at
0.1
A
,
retaining
71.1%
after
1500
cycles
0.2
.
Diffusion
pathways
barriers
reveal
efficient
3D
Mn
2
⁺
ion
diffusion
within
framework,
with
low
migration
barrier
0.514
eV.
Despite
promising
performance,
surface
analysis
metal
anode
reveals
formation
complex
organic/inorganic
SEI
(solid
interphase)
layers,
including
MnO
x
MnCl
compounds,
due
decomposition.
These
findings
highlight
critical
importance
layer
control
optimization
for
enhancing
durability
efficiency
electrolyte‐based
established
viable
next‐generation
energy
storage
solution
provide
foundation
further
advancements
battery
systems.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 14, 2025
Aqueous
rechargeable
manganese
(Mn)-ion
batteries
have
recently
emerged
as
a
promising
candidate
for
multivalent
ion
batteries.
However,
challenges
remain,
particularly
in
expanding
the
electrolyte's
voltage
window
and
identifying
compatible
anode
materials.
Herein,
we
introduce
Mn-ion
full
battery
comprising
nickel
hexacyanoferrate
(NiHCF)
cathode,
perylene-3,4,9,10-tetracarboxylic
diimide
(PTCDI)
anode,
novel
hydrated
eutectic
electrolyte
formulated
from
Mn(ClO4)2·6H2O
acetamide.
This
composition,
optimized
molar
ratio,
provides
stable
solvation
structure
that
suppresses
water
reactivity
supports
high
ionic
conductivity,
confirmed
by
spectroscopic
molecular
dynamics
analyses.
The
PTCDI
facilitates
highly
reversible
Mn2+
storage
via
unique
enolization
redox
reaction,
delivering
exceptional
rate
capability
cycling
stability.
As
result,
NiHCF||PTCDI
achieves
1.2
V
plateau,
excellent
performance
(up
to
5.0
A
g-1),
long
life
with
95.6%
capacity
retention
over
1200
cycles
at
1.0
g-1.
study
proposes
feasible
strategy
construction
of
environment-friendly,
long-life
low-cost
aqueous
batteries,
offering
sustainable
high-performance
solution
future
energy
applications.
