Advanced Materials,
Год журнала:
2024,
Номер
36(29)
Опубликована: Май 2, 2024
Lithium-ion
batteries
(LIBs),
in
which
lithium
ions
function
as
charge
carriers,
are
considered
the
most
competitive
energy
storage
devices
due
to
their
high
and
power
density.
However,
battery
materials,
especially
with
capacity
undergo
side
reactions
changes
that
result
decay
safety
issues.
A
deep
understanding
of
cause
battery's
internal
components
mechanisms
those
is
needed
build
safer
better
batteries.
This
review
focuses
on
processes
failures,
voltage
temperature
underlying
factors.
Voltage-induced
failures
from
anode
interfacial
reactions,
current
collector
corrosion,
cathode
overcharge,
over-discharge,
while
temperature-induced
failure
include
SEI
decomposition,
separator
damage,
between
electrodes
electrolytes.
The
also
presents
protective
strategies
for
controlling
these
reactions.
As
a
result,
reader
offered
comprehensive
overview
features
various
LIB
components.
Nature Communications,
Год журнала:
2020,
Номер
11(1)
Опубликована: Дек. 8, 2020
It
would
be
unwise
to
assume
'conventional'
lithium-ion
batteries
are
approaching
the
end
of
their
era
and
so
we
discuss
current
strategies
improve
next
generation
systems,
where
a
holistic
approach
will
needed
unlock
higher
energy
density
while
also
maintaining
lifetime
safety.
We
by
briefly
reviewing
areas
fundamental
science
advances
enable
revolutionary
new
battery
systems.
Advanced Energy Materials,
Год журнала:
2020,
Номер
11(7)
Опубликована: Дек. 21, 2020
Abstract
Although
layered
lithium
nickel‐rich
oxides
have
become
the
state‐of‐the‐art
cathode
materials
for
lithium‐ion
batteries
in
electric
vehicle
(EV)
applications,
they
can
suffer
from
rapid
performance
failure—particularly
when
operated
under
conditions
of
stress
(temperature,
high
voltage)‐the
underlying
mechanisms
which
are
not
fully
understood.
This
essay
aims
to
connect
electrochemical
with
changes
structure
during
cycling.
First,
structural
properties
LiNiO
2
compared
substituted
Ni‐rich
compounds
NMCs
(LiNi
x
Mn
y
Co
1−
−
O
)
and
NCAs
Al
).
Particular
emphasis
is
placed
on
decoupling
intrinsic
behavior
extrinsic
“two‐phase”
reactions
observed
initial
cycles,
as
well
after
extensive
cycling
NMC
NCA
cathodes.
The
need
revisit
various
high‐voltage
that
occur
modern
characterization
tools
highlighted
aid
understanding
accelerated
degradation
cathodes
at
voltages.
Energy & Environmental Science,
Год журнала:
2022,
Номер
15(7), С. 2732 - 2752
Опубликована: Янв. 1, 2022
Recent
progress
in
battery
recycling
is
critically
reviewed,
including
closed-loop
design
of
new
batteries
and
recycling-oriented
configurations
components,
together
with
an
appraisal
predicted
future
research.
Abstract
In
recent
years,
the
rapid
development
of
modern
society
is
calling
for
advanced
energy
storage
to
meet
growing
demands
supply
and
generation.
As
one
most
promising
systems,
secondary
batteries
are
attracting
much
attention.
The
electrolyte
an
important
part
battery,
its
composition
closely
related
electrochemical
performance
batteries.
Lithium‐ion
battery
mainly
composed
solvents,
additives,
lithium
salts,
which
prepared
according
specific
proportions
under
certain
conditions
needs
characteristics.
This
review
analyzes
advantages
current
problems
liquid
electrolytes
in
lithium‐ion
(LIBs)
from
mechanism
action
failure
mechanism,
summarizes
research
progress
future
trends
requirements
electrolytes,
points
out
emerging
opportunities
development.
Energy & Environmental Science,
Год журнала:
2022,
Номер
15(8), С. 3416 - 3438
Опубликована: Янв. 1, 2022
Preventing
the
decomposition
reactions
of
electrolyte
solutions
is
essential
for
extending
lifetime
lithium-ion
batteries.
However,
exact
mechanism(s)
at
positive
electrode,
and
particularly
soluble
products
that
form
initiate
further
negative
are
still
largely
unknown.
In
this
work,
a
combination
operando
gas
measurements
solution
NMR
was
used
to
study
NMC
(LiNi
x
Mn
y
Co1-x-y
O2)
LCO
(LiCoO2)
electrodes.
A
partially
delithiated
LFP
(Li
FePO4)
counter
electrode
selectively
identify
formed
through
processes
Based
on
detected
gaseous
products,
two
distinct
routes
with
different
onset
potentials
proposed
At
low
(<80%
state-of-charge,
SOC),
ethylene
carbonate
(EC)
dehydrogenated
vinylene
(VC)
surface,
whereas
high
(>80%
1O2
released
from
transition
metal
oxide
chemically
oxidises
solvent
CO2,
CO
H2O.
The
formation
water
via
mechanism
confirmed
by
reacting
17O-labelled
EC
characterising
reaction
via1H
17O
spectroscopy.
produced
initiates
secondary
reactions,
leading
various
identified
Noticeably
fewer
were
in
NMC/graphite
cells
compared
NMC/Li
FePO4
cells,
which
ascribed
consumption
(from
EC)
graphite
preventing
reactions.
insights
mechanisms
contribute
understanding
origin
capacity
loss
hoped
support
development
strategies
mitigate
degradation
NMC-based
cells.
ACS Applied Materials & Interfaces,
Год журнала:
2022,
Номер
14(11), С. 13206 - 13222
Опубликована: Март 8, 2022
The
chemical
and
electrochemical
reactions
at
the
positive
electrode-electrolyte
interface
in
Li-ion
batteries
are
hugely
influential
on
cycle
life
safety.
Ni-rich
layered
transition
metal
oxides
exhibit
higher
interfacial
reactivity
than
their
lower
Ni-content
analogues,
reacting
via
mechanisms
that
poorly
understood.
Here,
we
study
pivotal
role
of
electrolyte
solvent,
specifically
cyclic
ethylene
carbonate
(EC)
linear
ethyl
methyl
(EMC),
determining
charged
LiNi0.33Mn0.33Co0.33O2
(NMC111)
LiNi0.8Mn0.1Co0.1O2
(NMC811)
cathodes
by
using
both
single-solvent
model
electrolytes
mixed
solvents
used
commercial
cells.
While
NMC111
exhibits
similar
parasitic
currents
with
EC-containing
EC-free
during
high
voltage
holds
NMC/Li4Ti5O12
(LTO)
cells,
this
is
not
case
for
NMC811.
Online
gas
analysis
reveals
solvent-dependent
related
to
extent
lattice
oxygen
release
accompanying
decomposition,
which
electrolytes.
Combined
findings
from
impedance
spectroscopy
(EIS),
TEM,
solution
NMR,
ICP,
XPS
reveal
solvent
has
a
profound
impact
degradation
cathode
electrolyte.
Higher
coupled
impedance,
thicker
oxygen-deficient
rock-salt
surface
reconstruction
layer,
more
salt
breakdown,
amounts
dissolution.
These
processes
suppressed
electrolyte,
highlighting
incompatibility
between
conventional
solvents.
Finally,
new
mechanistic
insights
into
oxidation
pathways
and,
critically,
knock-on
further
degrade
electrodes
curtailing
battery
lifetime
provided.
Lithium
batteries
are
currently
the
most
popular
and
promising
energy
storage
system,
but
current
lithium
battery
technology
can
no
longer
meet
people's
demand
for
high
density
devices.
Increasing
charge
cutoff
voltage
of
a
greatly
increase
its
density.
However,
as
increases,
series
unfavorable
factors
emerges
in
causing
rapid
failure
batteries.
To
overcome
these
problems
extend
life
high‐voltage
batteries,
electrolyte
modification
strategies
have
been
widely
adopted.
Under
this
content,
review
first
introduces
degradation
mechanism
under
voltage,
then
presents
an
overview
recent
progress
using
strategies.
Finally,
future
direction
electrolytes
is
also
proposed.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Март 28, 2022
Improved
analytical
tools
are
urgently
required
to
identify
degradation
and
failure
mechanisms
in
Li-ion
batteries.
However,
understanding
ultimately
avoiding
these
detrimental
requires
continuous
tracking
of
complex
electrochemical
processes
different
battery
components.
Here,
we
report
an
operando
spectroscopy
method
that
enables
monitoring
the
chemistry
a
carbonate-based
liquid
electrolyte
during
cycling
batteries
with
graphite
anode
LiNi0.8Mn0.1Co0.1O2
cathode.
By
embedding
hollow-core
optical
fibre
probe
inside
lab-scale
pouch
cell,
demonstrate
effective
evolution
species
by
background-free
Raman
spectroscopy.
The
analysis
measurements
reveals
changes
ratio
carbonate
solvents
additives
as
function
cell
voltage
show
potential
track
lithium-ion
solvation
dynamics.
proposed
methodology
contributes
better
current
limitations
paves
way
for
studies
energy
storage
systems.
