ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(45), С. 61888 - 61898
Опубликована: Окт. 30, 2024
Polymers
have
been
used
as
additives
in
the
liquid
electrolytes
typically
for
secondary
batteries
that
utilize
metals
anode.
Such
are
conventionally
argued
to
improve
long-term
anode
performance
by
suppressing
morphological
and
hydrodynamic
instabilities
thought
be
responsible
out-of-plane
dendritic
metal
deposition
during
battery
charging.
More
recent
studies
reported
polymer
provide
even
more
fundamental
mechanisms
stabilizing
electrodeposition
through
their
ability
regulate
electrodeposit
crystallography
and,
thereby,
morphology.
Few
explore
how
polymers
carried
a
electrolyte
achieve
these
functions,
fewer
still
rules
choosing
among
various
types,
additive
molecular
weight
(
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
with
slightly
acidic
electrolytes
process
advantages
such
as
high
safety,
competitive
cost,
and
satisfactory
electrochemical
performance.
However,
the
failure
behaviors
of
both
electrodes,
regarding
zinc
dendrite
growth,
interfacial
parasitic
reactions,
collapse
cathode
materials
hinder
practical
application
ZIBs.
To
alleviate
issues
anode
at
same
time,
D‐xylose
(DX)
is
introduced
to
electrolyte
a
multifunctional
additive.
As
result,
side
reaction
suppressed
metallic
deposition
behavior
regulated
due
hydrogen
bonding
network
reconstruction
preferential
surface
adsorption
DX;
for
MnO
2
cathode,
DX
can
help
charge
transfer
increase
reactive
sites.
Benefiting
from
these
merits,
DX‐optimized
Zn//Zn
battery
displays
reveal
prolonged
lifespan
6912
h
an
ultra‐high
cumulative
capacity
17.28
Ah
cm
−2
5
mA
.
With
function
water
reactivity
suppression,
Coulombic
efficiency
reaches
99.91%
;
Zn||MnO
full
exhibit
excellent
cyclability
over
2000
cycles
5C
increased
118.9
mAh
g
−1
,
indicating
dual
functions
electrodes
AZIBs.
