Abstract
The
field
of
battery
research
is
bustling
with
activity
and
the
plethora
names
for
batteries
that
present
new
cell
concepts
indicative
this.
Most
have
grown
historically,
each
focus
in
their
own
time,
e.g.
lithium‐ion
batteries,
lithium‐air
solid‐state
batteries.
Nevertheless,
all
are
essentially
made
two
electrode
layers
an
electrolyte
layer.
This
lends
itself
to
a
systematic
comprehensive
approach
by
which
identify
type
chemistry
at
glance.
recent
increase
hybridized
potentially
opens
world
types.
To
retain
overview
this
dynamic
field,
briefly
discussed
typology
cells
proposed
form
short
universal
naming
system
AAM
XEB
CAM
(AAM:
anode
active
material;
X:
L
(liquid),
G
(gel),
PP
(plasticized
polymer),
DP
(dry
S
(solid),
H
(hybrid);
EB:
battery;
CAM:
cathode
material).
classification
based
on
principal
ion
conduction
mechanism
during
operation.
Even
though
presented
initiates
from
fields
lithium‐ion,
hybrid
concepts,
it
applicable
any
chemistry.
Advanced Functional Materials,
Год журнала:
2020,
Номер
30(32)
Опубликована: Июнь 8, 2020
Abstract
Despite
significant
interest
toward
solid‐state
electrolytes
owing
to
their
superior
safety
in
comparison
liquid‐based
electrolytes,
sluggish
ion
diffusion
and
high
interfacial
resistance
limit
application
durable
high‐power
density
batteries.
Here,
a
novel
quasi‐solid
Li
+
conductive
nanocomposite
polymer
electrolyte
containing
black
phosphorous
(BP)
nanosheets
is
reported.
The
developed
successfully
cycled
against
metal
(over
550
h
cycling)
at
1
mA
cm
−2
room
temperature.
cycling
overpotential
dropped
by
75%
BP‐free
composite
indicating
lower
the
electrode/electrolyte
interfaces.
Molecular
dynamics
simulations
reveal
that
coordination
number
of
ions
around
(trifluoromethanesulfonyl)imide
(TFSI
−
)
pairs
ethylene‐oxide
chains
decreases
metal/electrolyte
interface,
which
facilitates
transport
through
host.
Density
functional
theory
calculations
confirm
adsorption
LiTFSI
molecules
BP
surface
leads
weakening
N
atomic
bonding
enhances
dissociation
ions.
This
work
offers
new
potential
mechanism
tune
bulk
ionic
conductivity
may
lead
generation
lithium
batteries
with
conduction
kinetics
stable
long‐life
cycling.
Advanced Functional Materials,
Год журнала:
2020,
Номер
31(4)
Опубликована: Окт. 16, 2020
Abstract
Proper
distribution
of
thermally
conductive
nanomaterials
in
polymer
batteries
offers
new
opportunities
to
mitigate
performance
degradations
associated
with
local
hot
spots
and
safety
concerns
batteries.
Herein,
a
direct
ink
writing
(DIW)
method
is
utilized
fabricate
polyethylene
oxide
(PEO)
composite
polymers
electrolytes
(CPE)
embedded
silane‐treated
hexagonal
boron
nitride
(S‐hBN)
platelets
free
any
volatile
organic
solvents.
It
observed
that
the
S‐hBN
are
well
aligned
printed
CPE
during
DIW
process.
The
in‐plane
thermal
conductivity
1.031
W
−1
K
,
which
about
1.7
times
pristine
randomly
dispersed
(0.612
).
Thermal
imaging
shows
peak
temperature
(°C)
24.2%
lower
than
without
S‐hBN,
10.6%
indicating
superior
transport
property.
Lithium‐ion
half‐cells
made
LiFePO
4
cathode
displayed
high
specific
discharge
capacity
146.0
mAh
g
stable
Coulombic
efficiency
91%
for
100
cycles
at
room
temperature.
This
work
facilitates
development
printable
thermally‐conductive
safer
battery
operations.
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(35), С. 18701 - 18732
Опубликована: Янв. 1, 2021
Polymers
in
the
form
of
composite
electrolytes,
as
binders
and
protective
coatings
are
used
to
modify
interfaces
facilitate
manufacture
lithium
solid-state
batteries
with
inorganic
solid
electrolytes.
The Journal of Chemical Physics,
Год журнала:
2020,
Номер
153(10)
Опубликована: Сен. 9, 2020
Solid-state
polymer
electrolytes
and
high-concentration
liquid
electrolytes,
such
as
water-in-salt
ionic
liquids,
are
emerging
materials
to
replace
the
flammable
organic
widely
used
in
industrial
lithium-ion
batteries.
Extensive
efforts
have
been
made
understand
ion
transport
mechanisms
optimize
properties.
This
perspective
reviews
current
understanding
of
dynamics
comparing
similarities
differences
two
types
electrolytes.
Combining
recent
experimental
theoretical
findings,
we
attempt
connect
explain
different
small-molecule
from
a
perspective,
linking
macroscopic
coefficients
microscopic,
molecular
properties
solvation
environment
ions,
salt
concentration,
solvent/polymer
weight,
pairing,
correlated
motion.
We
emphasize
universal
features
by
highlighting
relevant
time
length
scales.
Several
outstanding
questions
anticipated
developments
for
electrolyte
design
discussed,
including
negative
transference
number,
control
through
precision
synthesis,
development
predictive
multiscale
modeling
approaches.
