Angewandte Chemie,
Год журнала:
2024,
Номер
136(38)
Опубликована: Июнь 26, 2024
Abstract
Photorechargeable
zinc
ion
batteries
(PZIBs),
which
can
directly
harvest
and
store
solar
energy,
are
promising
technologies
for
the
development
of
a
renewable
energy
society.
However,
incompatibility
requirement
between
narrow
band
gap
wide
coverage
has
raised
severe
challenges
high‐efficiency
dual‐functional
photocathodes.
Herein,
half‐metallic
vanadium
(III)
oxide
(V
2
O
3
)
was
first
reported
as
photocathode
PZIBs.
Theoretical
experimental
results
revealed
its
unique
photoelectrical
storage
properties
capturing
storing
energy.
To
this
end,
synergistic
protective
etching
strategy
developed
to
construct
carbon
superstructure‐supported
V
nanospheres
@CSs).
The
characteristics
,
combined
with
three‐dimensional
superstructure
assembled
by
ultrathin
nanosheets,
established
rapid
charge
transfer
networks
robust
framework
efficient
stable
solar‐energy
storage.
Consequently,
@CSs
delivered
record
properties,
including
photo‐assisted
discharge
capacities
463
mA
⋅
h
g
−1
at
2.0
A
long‐term
cycling
stability
over
3000
cycles.
Notably,
PZIBs
using
photocathodes
could
be
photorecharged
without
an
external
circuit,
exhibiting
high
photo
conversion
efficiency
(0.354
%)
photorecharge
voltage
(1.0
V).
This
study
offered
direction
direct
capture
Langmuir,
Год журнала:
2024,
Номер
40(47), С. 25143 - 25153
Опубликована: Ноя. 13, 2024
Constructing
an
artificial
solid
electrolyte
interface
protective
layer
on
the
surface
of
zinc
anode
is
effective
strategy
for
addressing
dendrite
growth,
passivation,
and
hydrogen
evolution
reaction
in
aqueous
zinc-ion
batteries.
This
study
introduces
a
robust
interlayer
composed
polyvinyl
butyral
matrix
decorated
with
SiO
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
Abstract
Long‐standing
challenges
including
notorious
side
reactions
at
the
Zn
anode,
low
anode
utilization,
and
rapid
cathode
degradation
current
densities
hinder
advancement
of
aqueous
zinc‐ion
batteries
(AZIBs).
Inspired
by
critical
role
capping
agents
in
nanomaterials
synthesis
bulk
crystal
growth,
a
series
are
employed
to
demonstrate
their
applicability
AZIBs.
Here,
it
is
shown
that
preferential
adsorption
on
different
planes,
coordination
between
2+
ions,
interactions
with
metal
oxide
cathodes
enable
preferred
(002)
deposition,
water‐deficient
ion
solvation
structure,
dynamic
cathode‐electrolyte
interface.
Benefiting
from
multi‐functional
agents,
dendrite‐free
plating
stripping
an
improved
Coulombic
efficiency
99.2%
enhanced
long‐term
cycling
stability
realized.
Remarkable
capacity
retention
91%
achieved
for
after
more
than
500
cycles
under
density
200
mA
g
−1
,
marking
one
best
stabilities
date.
This
work
provides
proof‐of‐concept
manipulating
electrochemical
behaviors,
which
should
inspire
pave
new
avenue
research
address
practical
energy
storage
beyond
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 20, 2025
Abstract
Metal
anodes
hold
considerable
promise
for
high-energy-density
batteries
but
are
fundamentally
limited
by
electrochemical
irreversibility
caused
uneven
metal
deposition
and
dendrite
formation,
which
compromise
battery
lifespan
safety.
The
chaotic
ion
flow
(or
flux
vortex)
near
the
electrode
surface,
driving
these
instabilities,
has
remained
elusive
due
to
limitations
in
conventional
techniques
such
as
scanning
electron
atomic
force
microscopies,
invasive
incapable
of
probing
internal
structures
deposits.
Here,
we
employ
in-situ
X-ray
computed
tomography
non-destructively
visualize
Zn
on
LAPONITE-coated
anodes,
providing
insights
into
structural
evolution
orientation.
Combined
with
computational
fluid
dynamics
simulations,
demonstrate
that
LAPONITE
coating,
its
separated
positive
negative
charge
centers,
suppresses
ionic
vortex
guiding
uniform,
dense,
vertically
aligned
growth
along
(100)
plane,
thereby
significantly
mitigating
growth.
This
translates
a
3.54-Ah
Zn-MnO2
pouch
cell
stable
performance
over
100
cycles,
offering
viable
path
toward
scalable,
high-performance
metal-anode
batteries.
Understanding
the
interfacial
dynamics
during
operation
is
critical
for
electrochemistry
to
make
great
advancements.
However,
breakthroughs
on
this
topic
under
extreme
conditions
are
very
scarce.
Here,
as
an
example,
we
employ
operando
Raman
spectroscopy
decode
of
titanium
electrolysis
using
a
tailored
instrument.
Direct
spectral
evidence
not
only
confirms
two-step
reduction
pathway
and
key
intermediate
(TiF52-)
in
molten
fluorides
with
high-temperature
strong-corrosion
but
also
unravels
origins
undesirable
shuttling
effect
TiF52-,
which
sluggish
kinetics
outward
diffusion
behavior
TiF52-.
Moreover,
insightful
atomic
scenario
electric
double
layer
(EDL)
varied
potentials
has
been
established.
These
quantitative
understandings
guide
us
design
economical-feasible
regulation
protocols─the
rational
combination
high-concentration,
low-valence
Ti-ion
electrolyte
appropriate
applied
potential.
Impressively,
current
efficiency
greatly
promoted
from
27.7
81.8%
our
proposed
protocols.
Finally,
work
demonstrates
bottom-up
technological
research
paradigm
based
mechanism
insights
rather
than
phenomenological
findings,
will
accelerate
advancement
electrochemistry.
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 26, 2025
Abstract
Aqueous
zinc
ion
batteries
(ZIBs)
attract
increasing
attention
as
alternative
energy
storage
technologies
due
to
their
merits
of
safety
and
low
cost.
However,
the
continuous
dissolution
active
materials
in
vanadium
oxide-based
ZIBs
has
posed
an
unavoidable
challenge.
Here,
we
systematically
analyzed
mechanism
using
both
ex-situ
in-situ
methods.
Experimental
theoretical
analyses
revealed
excessive
reduction
valence
following
H+
insertion
at
potentials
above
1.0
V
(vs.
Zn2+/Zn),
primarily
contributing
rather
than
Zn2+
insertion.
Protons
preferentially
form
monodentate
coordination
with
oxygen,
local
electron
density
around
atoms
facilitating
more
transitions
from
1s
higher-energy
3d
states.
This
leads
a
pronounced
V-valence
V-O
bond
breakage.
Specifically,
interlayer-inserted
exhibits
highest
its
significant
binding
compared
surface-inserted
H+.
As
proof
concept,
without
additives
or
cathode
modifications,
electrochemical
improvements
Zn/NH4V4O10
Zn/V2O5
were
achieved
by
reducing
cut-off
voltage
current
high
directly
inhibit
promote
favorable
surface-dominant
We
contend
that
understanding
chemistry
electrochemistry-related
failure
mechanisms
are
crucial
for
designing
Adv.
Mater.
applications.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Aqueous
zinc-ion
batteries
(ZIBs)
are
emerging
as
promising
next-generation
energy
storage
systems
due
to
their
inherent
safety,
environmental
sustainability,
and
cost-effectiveness.
However,
widespread
application
is
hindered
by
challenges
such
dendritic
Zn
growth,
hydrogen
evolution,
corrosion-induced
passivation,
which
compromise
performance
scalability.
To
overcome
these
obstacles,
we
developed
a
novel
dual-interface
modified
zinc
anode
integrating
fluoride
(ZnF2)-silicon
(Si)
interface
using
fluorine-doped
silicon
nanoparticles
encapsulated
within
hollow
mesoporous
carbon
nanospheres
(F-Si@HMCS).
The
in
situ
formation
of
ZnF2
layer
provides
high
electrochemical
stability,
effectively
suppressing
dendrite
formation,
mitigating
corrosion,
reducing
side
reactions
with
the
electrolyte.
silica
further
facilitates
uniform
electrodeposition
forming
Si-O-Zn
bonds,
regulate
electric
field
distribution
lower
nucleation
barriers.
Additionally,
structure
efficient
ion
transport
acts
buffer
against
volume
changes
during
cycling.
Consequently,
F-Si@HMCS@Zn
electrode
exhibits
long
lifespan
over
2500
h
at
5
mA
cm-2
capacity
0.5
symmetrical
cell
test.
When
coupled
α-MnO2
cathodes,
resulting
ZIBs
exhibit
outstanding
stable
cycle
life
2000
cycles
2
A
g-1.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
Abstract
In
past
few
decades,
the
rapid
advancement
of
lithium
battery
technology
has
revolutionized
our
lives
by
powering
portable
electronic
devices
and
vehicles.
However,
increasing
risk
thermal
runaway
(TR)
poses
significant
challenges
to
their
wider
application,
particularly
regarding
detrimental
effects
on
electric
vehicles
large‐scale
energy
storage.
The
separator,
serving
as
a
barrier
between
cathode
anode,
is
critical
in
preventing
active
materials
generate
Joule
heat,
thereby
playing
vital
role
ensuring
safety.
As
understanding
TR
mechanism
deepens,
it
evident
that
numerous
exothermic
reactions
substances
are
closely
linked
separator.
Consequently,
functional
design
development
runaway‐blocking
separators
(TR‐blocking
separators)
regarded
key
strategies
for
mitigating
TR.
intricate
relationships
these
remain
poorly
understood,
making
challenging
gain
progress
targeted
separators.
This
review
presents
an
in‐depth
analysis
regulating
internal
side
batteries
minimize
heat
release
during
TR,
summarize
advancements
TR‐blocking
enhancing
safety
at
different
stages.
Furthermore,
insights
into
presented
based
previous
studies
various
unfavorable
reactions.
Additionally,
future
directions
suggested
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
Abstract
Aqueous
zinc
ion
batteries
(ZIBs)
have
been
recognized
as
highly
promising
energy
storage
systems
due
to
their
high
safety,
low
cost,
and
environmental
benignity.
However,
voltage
platform
of
cathode,
coupled
with
uneven
Zn
deposition,
side
reactions,
limited
operational
temperature
range
caused
by
free
water
molecules,
has
hampered
the
practical
application
ZIBs.
To
address
these
issues,
1‐ethyl‐3‐methylimidazolium
acetate
(EmimAc)
ionic
liquid
(IL)
is
utilized
modify
active
in
polyvinyl
alcohol
(PVA)‐based
hydrogel
electrolyte.
The
abundant
hydroxyl
groups
on
PVA
chains,
along
strong
interactions
between
IL
H
2
O,
disrupt
hydrogen
bonds
molecules.
This
electrolyte
alleviates
improves
low‐temperature
performance
through
suppressing
crystallization
lowering
freezing
point
Furthermore,
binding
2+
restricts
migration,
ensuring
de‐intercalation
Na
+
at
3
V
(PO
4
)
(NVP)
thereby
maintaining
a
plateau
(1.48
V)
for
improved
density.
Benefitting
from
merits,
pouch
cell
Zn||NVP
achieves
100
cycles
25
°C,
coin
81.3%
capacity
retention
after
1600
−20
°C.
work
represents
significant
advance
designing
expanded
voltage/temperature
electrolytes
