Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(25), С. 11129 - 11137
Опубликована: Июнь 14, 2022
The
hydrophobic
internal
cavity
and
hydrophilic
external
surface
of
cyclodextrins
(CDs)
render
promising
electrochemical
applications.
Here,
we
report
a
comparative
mechanistic
study
on
the
use
CD
molecules
(α-,
β-,
γ-CD)
as
electrolyte
additives
for
rechargeable
Zn
batteries.
addition
α-CD
in
aqueous
ZnSO4
solution
reduces
nucleation
overpotential
activation
energy
plating
suppresses
H2
generation.
Computational,
spectroscopic,
studies
reveal
that
preferentially
adsorbs
parallel
via
secondary
hydroxyl
groups,
suppressing
water-induced
side
reactions
hydrogen
evolution
hydroxide
sulfate
formation.
Additionally,
exterior
with
intense
electron
density
simultaneously
facilitates
Zn2+
deposition
alleviates
dendrite
A
formulated
3
M
+
10
mM
enables
homogenous
plating/stripping
(average
Coulombic
efficiency
∼
99.90%)
at
1
mA
cm–2
Zn|Cu
cells
considerable
capacity
retention
84.20%
after
800
cycles
Zn|V2O5
full
This
provides
insight
into
supramolecular
macrocycles
to
modulate
enhance
interface
stability
kinetics
metallic
anodes
battery
chemistry.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(28)
Опубликована: Июнь 17, 2023
Abstract
Aqueous
Zn‐ion
batteries
(AZIBs)
have
attracted
much
attention
due
to
their
excellent
safety,
cost‐effectiveness,
and
eco‐friendliness
thereby
being
considered
as
one
of
the
most
promising
candidates
for
large‐scale
energy
storage.
Zn
metal
anodes
with
a
high
gravimetric/volumetric
capacity
are
indispensable
advanced
AZIBs.
However,
pristine
encounter
severe
challenges
in
achieving
adequate
cycling
stability,
including
dendrite
growth,
hydrogen
evolution
reaction,
self‐corrosion,
by‐product
formation.
Because
all
these
reactions
closely
related
electrolyte/Zn
interface,
subtle
interface
engineering
is
important.
Many
strategies
targeted
been
developed.
In
this
review,
timely
update
on
perspectives
summarized,
especially
focusing
controllable
synthesis
Zn,
surface
engineering,
electrolyte
formulation,
separator
design.
Furthermore,
corresponding
internal
principles
clarified,
which
helpful
help
seek
new
strategies.
Finally,
future
development
practical
AZIBs
discussed,
conducting
situ
testing,
unification
battery
models,
some
boundary
issues,
etc.
This
review
expected
guide
provi
beacon
light
direction
aqueous
zinc
ion
batteries.
Energy & Environmental Science,
Год журнала:
2023,
Номер
16(6), С. 2684 - 2695
Опубликована: Янв. 1, 2023
A
zwitterionic
additive
(
l
-CN)
with
a
positively
charged
quaternary
ammonium
site
and
multifunctional
polar
groups
was
employed
to
achieve
ultralong-life
Zn-ion
batteries.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(22)
Опубликована: Апрель 25, 2023
Abstract
The
practical
application
of
aqueous
zinc
batteries
(AZBs)
is
significantly
limited
by
the
poor
reversibility
anodes,
including
rampant
dendrite
growth
and
severe
interfacial
side‐reactions.
Herein,
trace
hexamethylenetetramine
(HMTA)
additive
with
a
lone‐pair‐electron
containing
heterocycle
introduced
for
Zn
metal
anode
protection.
Specifically,
added
HMTA
can
change
solvated
structure
strong
interaction
ions,
preferentially
absorb
on
surface
to
in
situ
establish
an
unique
anode–molecule
interface.
Such
interface
not
only
shows
affinity
promote
dynamic
transmission
deposition
2+
ions
but
also
displays
role
suppressing
parasitic
reactions.
Consequently,
electrolyte
achieves
high
Coulombic
efficiency
99.75%,
delivers
remarkable
lifespan
over
4000
h
at
5
mA
cm
−2
1
mAh
Zn//Zn
symmetric
cell.
Even
under
deep
plating/stripping
condition
(5
),
it
still
run
almost
600
h.
Additionally,
Zn//V
2
O
full
cell
retains
capacity
retention
61.7%
after
cycles
A
g
−1
.
innovative
strategy
expected
be
immediate
benefit
design
low‐cost
AZBs
ultra‐long
lifespan.
Carbon-based
quantum
dots
(QDs)
have
emerged
as
a
fascinating
class
of
advanced
materials
with
unique
combination
optoelectronic,
biocompatible,
and
catalytic
characteristics,
apt
for
plethora
applications
ranging
from
electronic
to
photoelectrochemical
devices.
Recent
research
works
established
carbon-based
QDs
those
frontline
through
improvements
in
design,
processing,
device
stability.
This
review
broadly
presents
the
recent
progress
synthesis
QDs,
including
carbon
graphene
graphitic
nitride
their
heterostructures,
well
salient
applications.
The
methods
are
first
introduced,
followed
by
an
extensive
discussion
dependence
performance
on
intrinsic
properties
nanostructures
aiming
present
general
strategies
designing
optimal
performance.
Furthermore,
diverse
presented,
emphasis
relationship
between
band
alignment,
charge
transfer,
improvement.
Among
discussed
this
review,
much
focus
is
given
photo
electrocatalytic,
energy
storage
conversion,
bioapplications,
which
pose
grand
challenge
rational
designs.
Finally,
summary
existing
challenges
future
directions
elaborated.
ACS Energy Letters,
Год журнала:
2022,
Номер
8(1), С. 31 - 39
Опубликована: Ноя. 17, 2022
The
poor
electrochemical
performance
of
Zn
anodes
at
high
current
densities
and
large
areal
capacities
is
a
tough
challenge
due
to
the
accelerated
dendrite
growth
worsened
reaction
irreversibility.
Herein,
an
ester-based
organic,
γ-butyrolactone
(GBL),
utilized
regulate
deposition
behaviors
anode.
Through
DFT
calculations,
strong
interactions
GBL
molecules
with
Zn2+
slab
were
confirmed.
In
addition,
improved
interfacial
properties
achieved,
including
reduced
potential
hydrogen
evolution
enhanced
wetting
ability.
Significantly,
concentration
distribution
difference
between
Zn/electrolyte
interface
electrolyte
was
investigated
by
Raman
spectra,
preferential
adsorption
highlighted.
Electrochemical
tests
indicated
that
supporting
density
cycle
life
anode
using
could
reach
30
mA
cm–2
5000
h,
respectively,
proving
effectiveness
this
strategy.
Advanced Energy Materials,
Год журнала:
2022,
Номер
12(20)
Опубликована: Апрель 10, 2022
Abstract
Spontaneous
corrosion
and
uncontrolled
dendrite
accumulation
of
Zn
rapidly
degrades
zinc–metal
battery
performance.
Artificial
interfaces
have
been
widely
fabricated
on
metal
anodes,
yet
most
are
detrimental
to
ion
transfer
adapt
poorly
spatial
changes
during
plating/stripping.
Herein,
a
hybrid
interface,
consisting
thermoplastic
polyurethane
(TPU)
fiber
matrix
Zn‐alginate
(ZA)
filler,
is
designed,
which
serves
as
physical
barrier
between
anode
electrolyte
inhibit
side
reactions.
Encouragingly,
ZA
regulates
2+
transport
endows
uniform
deposition
by
inducing
plating/stripping
underneath
the
interface.
At
same
time,
TPU
frame
acts
super‐elastic
constraint
further
suppress
rampant
evolution
accommodate
large
amount
deposited
Zn.
Consequently,
interface‐protected
delivers
high
cycling
stability
(1200
h
at
5
mA
cm
–2
/5
;
500
10
/10
),
realizing
an
exceptional
cumulative
capacity
over
6000
.
This
enhancement
well
maintained
in
full
cell
when
coupled
with
vanadium‐based
cathode.
The
unique
matrix‐filler
architecture
mechanistic
insights
unraveled
this
study
expected
provide
general
principle
designing
functional
for
anodes.
Aqueous
zinc-ion
batteries
(ZIBs)
using
the
Zn
metal
anode
have
been
considered
as
one
of
next-generation
commercial
with
high
security,
robust
capacity,
and
low
price.
However,
parasitic
reactions,
notorious
dendrites
limited
lifespan
still
hamper
their
practical
applications.
Herein,
an
eco-friendly
nitrogen-doped
sulfonated
carbon
dots
(NSCDs)
is
designed
a
multifunctional
additive
for
cheap
aqueous
ZnSO4
electrolyte,
which
can
overcome
above
difficulties
effectively.
The
abundant
polar
groups
(-COOH,
-OH,
-NH2
,
-SO3
H)
on
CDs
surfaces
regulate
solvation
structure
Zn2+
through
decreasing
coordinated
active
H2
O
molecules,
thus
redistribute
deposition
to
avoid
side
reactions.
Some
negatively
charged
NSCDs
are
adsorbed
surface
isolate
O/SO42-
corrosion
electrostatic
shielding
effect.
synergistic
effect
doped
nitrogen
species
sulfonic
induce
uniform
electrolyte
flux
homogeneous
plating
(002)
texture.
As
result,
excellent
cycle
life
(4000
h)
Coulombic
efficiency
(99.5%)
optimized
ZIBs
realized
in
typical
electrolytes
only
0.1
mg
mL-1
additive.
