Abstract
Aqueous
Zn/V
2
O
5
batteries
are
featured
for
high
safety,
low
cost,
and
environmental
compatibility.
However,
complex
electrode
components
in
real
impede
the
fundamental
understanding
of
phase
transition
processes
intercalation
chemistry.
Here,
model
based
on
V
film
electrodes
which
show
similar
electrochemical
behaviors
as
ones
built.
Advanced
surface
science
characterizations
allow
to
identify
trajectories
Zn
2+
,
H
O,
+
during
processes.
Protons
serve
vanguard
intercalated
species,
facilitating
subsequent
O.
The
increase
capacity
activation
process
is
mainly
due
from
more
active
·nH
structure
caused
by
partial
irreversible
deintercalation
rather
than
sites
induced
grain
refinement
materials.
Eventually,
accumulation
species
within
oxide
results
formation
inactive
(Zn
3
(OH)
7
·2H
O)
structure.
established
chemistry
helps
design
high‐performance
Advanced Materials,
Год журнала:
2024,
Номер
36(33)
Опубликована: Июнь 20, 2024
Interfacial
instability
within
aqueous
zinc
batteries
(AZBs)
spurs
technical
obstacles
including
parasitic
side
reactions
and
dendrite
failure
to
reach
the
practical
application
standards.
Here,
an
interfacial
engineering
is
showcased
by
employing
a
bio-
derived
zincophilic
macromolecule
as
electrolyte
additive
(0.037
wt%),
which
features
long-chain
configuration
with
laterally
distributed
hydroxyl
sulfate
anion
groups,
has
propensity
remodel
electric
double
layer
of
Zn
anodes.
Tailored
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(22)
Опубликована: Март 5, 2024
Abstract
Despite
rechargeable
aqueous
Zn‐ion
batteries
(AZIBs)
exhibit
advantages
such
as
high
safety,
specific
energy,
and
low
cost,
etc,
the
implementation
of
Zn
anodes
is
still
hampered
by
insufficient
cyclability
grievous
side
reactions.
To
improve
cycling
stability
zinc
anode,
a
stable
anode/electrolyte
interface
needed
to
suppress
dendrite
formation
Herein,
self‐regulating
endogenous
organic–inorganic
hybrid
layer
(EHI)
in
situ
on
surface
anode
regulating
solvent
molecules
constructed.
The
EHI
consists
an
organic
outer
containing
N─H
─CH
3
inorganic
inner
ZnO
ZnCO
,
which
effectively
inhibits
hydrogen
evolution
growth.
Consequently,
AZIBs
with
achieve
lifespan
exceeding
5500
h
mA
cm
−2
stripping/plating
copper
foils
for
600
cycles
average
coulomb
efficiency
(CE)
99.47%.
This
study
provides
feasible
idea
realizing
reversible
zinc‐ion
batteries.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(18)
Опубликована: Март 11, 2024
Abstract
As
a
new
generation
of
lithium‐ion
battery
alternative,
aqueous
zinc
(Zn)
ion
batteries
(ZIBs)
garner
tremendous
interests
for
future
energy
storage
application
owing
to
their
inherent
incombustible,
nontoxic,
and
low‐cost
features.
However,
practical
utilization
is
hampered
by
the
electrolyte
freezing
at
subzero
conditions.
In
this
study,
novel
high‐entropy
(HE)
fabricated
presented
with
hybrid
solvents
mitigate
low
temperatures,
restrain
calendar
corrosion,
boost
Zn‐ion
transfer
kinetics.
Specifically,
isovolumetric
combined
ethyl
acetate,
ethylene
glycol,
dimethyl
sulfoxide
as
solvent
components
not
only
induce
reconfiguration
hydrogen
bonding,
but
also
alter
solvation
sheath
Zn
ions
within
HE
environment.
This
synergistic
coupling
co‐solvents
effectively
harnesses
features
individual
additive
facilitates
remarkable
advantages
on
cycling
reversibility,
especially
in
low‐temperature
Benefiting
from
anti‐freezing
structure
regulation
features,
symmetrical
equipped
electrolytes
can
work
over
2500
h
salt
concentration
(1
m
)
various
temperatures.
provides
facile
modulation
strategy
achieve
electrolyte,
promoting
commercialization
advanced
ZIBs
wide‐temperature
adaptability.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 2, 2025
Metal
anodes
hold
significant
promise
for
next-generation
energy
storage,
yet
achieving
highly
reversible
plating/stripping
remains
challenging
due
to
dendrite
formation
and
side
reactions.
Here
we
present
a
tailored
electrolyte
design
surpass
99.9%
Coulombic
efficiency
(CE)
in
zinc
metal
by
co-engineering
salts
solvents
address
two
critical
factors:
plating
morphology
the
anode-electrolyte
interface.
By
integrating
dual-salt
approach
organic
co-solvent
design,
these
issues
can
be
effectively
addressed.
The
resulting
hybrid
renders
CE
of
99.95%
at
1
mA
cm−2
medium
concentration
(3.5
m).
Building
upon
near-unity
CE,
an
anode-free
cell
with
ZnI2
cathode
stably
run
more
than
1000
cycles
under
practical
conditions
minimal
capacity
loss.
Our
findings
provide
promising
pathway
anodes,
advancing
metal-based
battery
technologies
broader
storage
applications.
next-gen
but
face
challenges
dendrites
authors
combine
approaches
battery,
efficiency.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Aqueous
zinc
(Zn)
metal
batteries
(ZMBs)
have
received
great
attention
due
to
their
safety
and
environmental
friendliness.
Although
aqueous
electrolytes
facilitate
fast
kinetics
in
oxide
cathodes,
incompatibility
with
the
Zn
anodes
triggers
severe
hydrogen
evolution
reaction
(HER)
dendrite
growth.
Herein,
a
self-phase
separated
electrolyte
(SPSE)
is
proposed
fulfill
contradictory
requirements
of
anode
cathode
ZMBs.
Molecular
modeling
experimental
investigations
verify
that
hydrophobic
fluorinated
solvent
moderate
dielectric
constant
large
Hildebrand
parameter
disparity
relative
water
contributes
spontaneous
aqueous–nonaqueous
phase
separation
within
SPSE
against
stirring
aging.
In
as-developed
SPSE,
nonaqueous
effectively
inhibits
HER
formation
by
synergistic
effect
regulated
deposition
protective
solid
interphase
(SEI).
Meanwhile,
ensures
ion
insertion/extraction
dynamics.
Consequently,
allows
for
Zn||Zn
symmetrical
cells
2500
h
cycle
life
ultralow
corrosion
current
(0.08
mA
cm–2).
Notably,
Zn|SPSE|V2O5
full
cell
sustains
over
3000
cycles
negligible
corrosion,
pouch
demonstrates
remarkable
operation
stability
repeated
rollover.
Our
design
concept
paves
promising
path
practical
ZMBs
combine
long-term
cyclability,
enhanced
safety,
durability.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(21)
Опубликована: Янв. 31, 2024
Abstract
The
research
on
rechargeable
aqueous
Zinc(Zn)‐ion
batteries
has
expanded
exponentially.
However,
the
performance
of
Zn
anodes
during
cycling
and
their
commercial
application
is
restricted
by
severe
corrosion
dendritic
formation.
In
this
study,
a
facile
approach
presented
to
address
these
challenges
introducing
minute
quantities
Zr(NO
3
)
4
into
m
ZnSO
electrolyte.
additive
facilitates
creation
protective
layer
comprising
spatial
gradient
oxidation
alloy
(GOA)
particles.
insulating
zirconium‐based
materials
provide
necessary
potential
induce
plate
under
covering
film.
As
proof
concept,
in
situ
GOA
coating
anode
exhibits
exceptional
stability
for
8000
cycles
an
ultralow
hysteresis
voltage
41
mV
at
current
density
5
mA
cm
−2
.
Furthermore,
Density
Functional
Theory
analyses
reveal
that
homogenizes
electric
field
surrounding
surface
providing
abundant
zincophilic
sites
nucleation
compared
bare
plates.
This
ensures
uniform
deposition,
preventing
growth.
addition,
characterization
computation
Gibbs
free
energy
(Δ
G
H
*
may
effectively
suppress
hydrogen
evolution
reaction.
