Interfacial
pH
fluctuation
is
one
of
the
primary
reasons
for
issues
related
to
Zn
metal
anodes.
Herein,
polar
amphoteric
alanine,
as
a
multifunctional
electrolyte
additive,
designed
regulate
electric
double
layer
(EDL)
and
solvation
structure.
Alanine
with
self-adaptation
capability
can
stabilize
pH.
Due
more
negative
adsorption
energy,
alanine
preferentially
adsorbs
on
surface
repels
water
molecules
within
EDL.
Alanine-enriched
EDL
effectively
shields
tips,
homogenizes
interfacial
field
distribution,
promotes
preferential
deposition
horizontal
flaky
Zn.
limits
contact
between
anode.
additive
decreases
quantity
in
Numerous
organic
electrolytes
additives
have
been
reported
to
improve
Zn
anode
performance
in
aqueous
metal
batteries
(AZMBs).
However,
the
modification
mechanism
needs
be
further
revealed
consideration
of
different
environments
for
and
electrodes
during
charge-discharge
process.
Herein,
sulfur-containing
zwitter-molecule
(methionine,
Met)
is
used
as
an
additive
ZnSO
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Abstract
Aqueous
Zn
metal
batteries
(AZMBs)
have
appealing
advantages,
including
good
safety,
low
cost,
and
high
volumetric
energy
density.
However,
serious
parasitic
reactions
dendrite
growth
at
anodes
hinder
practical
applications
of
AZMBs.
Here,
a
nature‐inspired
strategy
is
proposed
to
improve
using
plant‐cell
derivatives
as
additives
for
ZnSO
4
electrolytes.
In
the
electrolyte,
TEMPO
(2,2,6,6‐tetramethylpiperidine‐1‐oxyl)‐oxidized
cellulose
nanofibers
(TOCN)
calcium
lignosulfonate
(CL)
with
specific
functional
groups
modulate
2+
solvation
structure.
More
importantly,
they
reform
cell
membrane/wall‐like
layer
mechanical
strength
selective
transmission/plating
on
anode
surface,
which
enables
uniform
deposition
alleviates
side
reactions.
As
result,
symmetric
cells
dual‐additive
electrolyte
exhibit
highly
reversible
dendrite‐free
stripping/plating
behavior
over
2000
500
h
2
mA
cm
−2
/1
mAh
10
/10
,
respectively.
Furthermore,
Zn//NH
V
O
full
shows
cycling
stability
300
cycles
negative/positive
(N/P)
ratio.
A
density
92.9
Wh
kg
−1
can
be
delivered
limited
metallic
consumption,
showing
that
has
prospects
use.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 12, 2025
Abstract
Despite
the
conspicuous
merits
of
Zn
metal
anodes,
commercialization
anode‐based
electrochemical
energy
storage
devices
is
still
constrained
by
uncontrollable
dendrite
growth
and
serious
parasitic
reactions.
Herein,
an
innovative
strategy
employing
kosmotropic
anions‐intensified
proline
additive
to
regulate
2+
solvation
structure
manipulate
deposition
interface,
thus
achieving
highly
stable
proposed.
The
key
this
lies
in
ingeniously
utilizing
SO
4
2−
anions
enhance
affinity
adsorption
layer
on
anodes
weaken
.
Consequently,
proline‐containing
ZnSO
(ZnSO
‐proline)
electrolyte
deliver
a
remarkable
lifespan
over
2600
h
at
1.0
mA
cm
−2
mAh
Even
under
harsh
plating/stripping
condition
(10
10
),
‐proline
stably
operate
for
650
h.
Meanwhile,
Coulombic
efficiency
designed
as
high
99.9%
1100
cycles.
endows
Zn‐ion
batteries
hybrid
capacitors
with
notably
optimized
long‐term
cycling
stability.
This
work
expected
be
immediate
benefit
design
low‐cost
Zn‐based
systems
ultra‐long
lifespan.
