Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 10, 2024
Abstract
Free
from
strategically
important
elements
such
as
lithium,
nickel,
cobalt,
and
copper,
potassium‐ion
batteries
(PIBs)
are
heralded
promising
low‐cost
sustainable
electrochemical
energy
storage
systems
that
complement
the
existing
lithium‐ion
(LIBs).
However,
reported
performance
of
PIBs
is
still
suboptimal,
especially
under
practically
relevant
battery
manufacturing
conditions.
The
primary
challenge
stems
lack
electrolytes
capable
concurrently
supporting
both
low‐voltage
anode
high‐voltage
cathode
with
satisfactory
Coulombic
efficiency
(CE)
cycling
stability.
Herein,
we
report
a
electrolyte
facilitates
commercially
mature
graphite
(>3
mAh
cm
−2
)
to
achieve
an
initial
CE
91.14
%
(with
average
around
99.94
%),
fast
redox
kinetics,
negligible
capacity
fading
for
hundreds
cycles.
Meanwhile,
also
demonstrates
good
compatibility
4.4
V
(
vs
.
K
+
/K)
2
Mn[Fe(CN)
6
]
(KMF)
cathode.
Consequently,
KMF||graphite
full‐cell
without
precycling
treatment
electrodes
can
provide
discharge
voltage
3.61
specific
316.5
Wh
kg
−1
−(KMF+graphite),
comparable
LiFePO
4
||graphite
LIBs,
maintain
71.01
retention
after
2000
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 14, 2024
Abstract
Lithium‐ion
batteries
(LIBs)
have
emerged
as
vital
elements
of
energy
storage
systems
permeating
every
facet
modern
living,
particularly
in
portable
electronic
devices
and
electric
vehicles.
However,
with
the
sustained
economic
social
development,
new‐generation
LIBs
high
density,
wide
operating
temperature
range,
fast
charge,
safety
are
eagerly
expected,
while
conventional
ethylene
carbonate
(EC)‐based
electrolytes
fail
to
satisfy
corresponding
requirements.
Comparatively,
ether‐based
electrolyte
fascinating
properties
recently
been
revived
fields,
many
advanced
exciting
performances
under
developed.
This
review
provides
an
extensive
overview
latest
breakthroughs
concerning
applied
intercalation
cathodes.
To
systematically
outline
progression
electrolytes,
this
is
categorized
from
perspective
anodes
follows:
i)
graphite
anode‐based
LIBs;
ii)
silicon
iii)
lithium
metal
LIBs.
Advanced Materials,
Год журнала:
2024,
Номер
36(41)
Опубликована: Авг. 17, 2024
Abstract
Interfacial
Na
+
behaviors
of
sodium
(Na)
anode
severely
threaten
the
stability
sodium‐metal
batteries
(SMBs).
This
review
systematically
and
in‐depth
discusses
current
fundamental
understanding
interfacial
in
SMBs
including
migration,
desolvation,
diffusion,
nucleation,
deposition.
The
key
influencing
factors
optimization
strategies
these
are
further
summarized
discussed.
More
importantly,
high‐energy‐density
anode‐free
metal
(AFSMBs)
highlighted
by
addressing
issues
areas
limited
sources
irreversible
loss.
Simultaneously,
recent
advanced
characterization
techniques
for
deeper
insights
into
deposition
behavior
composition
information
SEI
film
spotlighted
to
provide
guidance
advancement
AFSMBs.
Finally,
prominent
perspectives
presented
guide
promote
development
Abstract
Lithium
metal
batteries
(LMBs)
represent
the
most
promising
next‐generation
high‐energy
density
batteries.
The
solid
electrolyte
interphase
(SEI)
film
on
lithium
anode
plays
a
crucial
role
in
regulating
deposition
and
improving
cycling
performance
of
LMBs.
In
this
review,
we
comprehensively
present
formation
process
SEI
film,
while
elucidating
key
properties
such
as
electronic
conductivity,
ionic
mechanical
performance.
Furthermore,
various
approaches
for
constructing
are
discussed
from
both
regulation
artificial
coating
design
perspectives.
Lastly,
future
research
directions
along
with
development
recommendations
also
provided.
This
review
aims
to
provide
possible
strategies
further
improvement
LMBs
highlight
their
inspiration
directions.
Advanced Energy Materials,
Год журнала:
2023,
Номер
14(2)
Опубликована: Ноя. 22, 2023
Abstract
Silicon
anodes
with
a
high
capacity
of
4200
mAh
g
−1
and
low
potential
0.3
V
(vs
Li
+
/Li)
enable
lithium‐ion
batteries
improved
energy
density.
However,
the
thickened
3D
solid‐electrolyte
interphase
(SEI)
formation
on
Si
particles
in
liquid
electrolytes
consumes
electrolyte/active
blocks
/e
−
transport,
resulting
fast
fading.
Herein,
high‐concentration
polymer
electrolyte
(HCPE)
is
designed
to
build
2D
SEI
anode
surface
instead
particles,
which
accommodates
volume
change
maintains
continuous
transport
pathways
as
well.
The
retarding
effect
NO
3
lowers
polymerization
rate
1,3‐dioxolane
(DOL),
enabling
6
m
LiFSI
dissolution.
concentration
takes
part
constructing
solvation
structure
pulls
DOL
away,
reducing
decomposition
poly‐DOL
(PDOL)
inducing
generation
LiF‐
N‐rich
mechanical
strength
capability.
As
result,
cell
using
HCPE
delivers
1765
at
2C
2000
after
100
cycles
0.2C,
superior
that
(617
)
low‐concentration
(45
).
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(17)
Опубликована: Янв. 4, 2024
Abstract
Mg(SO
3
CF
)
2
(Mg(OTf)
is
a
simple
and
cost‐effective
magnesium
salt,
which
can
promote
the
future
applications
of
rechargeable
batteries
(RMBs).
However,
Mg(OTf)
/ether
electrolytes
suffer
from
poor
electrochemical
properties
due
to
low
solubility
serious
decomposition
passivation
[Mg
2+
‐OTf
−
]
ion
pair
on
Mg.
Herein,
OTf
anion
successfully
grafted
low‐cost
fluoride
boronic
esters
(B(OC
x
H
y
F
2x‐y+1
obtain
asymmetric
weak‐coordination
boron‐center
[B(OC
OTf]
in
ether
electrolytes.
The
‐OCH
(TFE)
groups
B(TFE)
effectively
realize
charge
delocalization
B‐O
plane,
restraining
independent
pair.
co‐decomposition
[B(TFE)
induces
formation
B‐containing
organic/inorganic
interphase,
thus
achieving
reversible
Mg
plating/stripping.
After
further
solubilization
reaction,
obtained
electrolyte
exhibits
high
average
coulombic
efficiency
98.13%
long‐term
cycling
stability
(1000
h).
Notably,
long
life
(capacity
retention
90.2%
after
600
cycles
at
1
C)
high‐rate
capacity
(43.0
mAh
g
−1
5
Mg/Mo
6
S
8
full
cell
demonstrate
favorable
electrolyte/cathode
compatibility.
This
work
brings
new
insights
design
new‐type
Mg‐salts
high‐performance
for
commercial
RMBs.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(46)
Опубликована: Авг. 17, 2024
Abstract
The
reversibility
and
stability
of
zinc
(Zn)
metal
anode
are
closely
related
to
inner
Helmholtz
plane
(IHP)
chemistry.
H
2
O‐rich
IHP
raises
severe
parasitic
reactions
irregular
Zn
deposition,
impeding
the
practical
utility
in
aqueous
Zn‐ion
batteries
(AZIBs).
In
this
study,
tetrahydropyran
(THP),
a
five‐carbon
heterocyclic
ether
with
permanent
dipole
moment
hydrophobic
characteristic,
is
introduced
as
self‐adsorptive
additive
reshape
IHP.
It
squeezes
out
partial
O
molecules
forms
O‐lean
IHP,
benefitting
for
alleviating
active
decomposition
improving
anode.
Moreover,
adsorbed
THP
induces
preferential
nucleation
(002)
plane,
facilitating
dendrite‐free
growth
Consequently,
Zn||Zn
symmetric
cell
enables
cycle
over
3600
h
at
5
mA
cm
−2
@
1
mAh
.
Zn||Cu
half‐cell
can
stably
400
cycles
99.9%
coulombic
efficiency
even
under
harsh
test
conditions
(10
@5
)
30
µm
foil.
Zn||NH
4
V
10
full
maintains
92.6%
capacity
retention
after
800
A
g
−1
Zn||I
perform
steadily
10000
decay
rate
merely
0.003%
per
C.
