Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 24, 2025
Abstract
High‐capacity
and
low‐cost
cathodes
are
urgently
pursued
to
improve
the
energy
density
realize
large‐scale
application
of
lithium/sodium
ion
batteries.
Transition
metal
fluorides
(MF
x
),
which
involve
multiple
electron
transfer
based
on
conversion
reactions,
widely
regarded
as
promising
candidates
with
advantages
high
capacity
(≈500–800
mAh
g
−1
)
abundant
resources.
However,
MF
face
significant
challenges,
including
low
conductivity,
structural
pulverization,
sluggish
kinetics,
dissolution
in
electrolyte,
etc.
Here,
four
rational
strategies
overcome
shortcomings
properties
presented
detail.
First,
compositing
functional
materials
can
enhance
electronic
buffer
volume
changes,
suppress
agglomeration,
stabilize
particle
surface.
Second,
constructing
hierarchical,
porous,
hollow
structures
strengthen
stability,
shorten
transport
distance,
expose
rich
reactive
sites.
Third,
doping
heterogeneous
elements
electrical/ionic
promote
reaction
reversibility,
contribute
additional
capacity.
Fourth,
optimizing
electrolytes
binders
form
a
stable
electrode/electrolyte
interface,
widen
voltage
window,
inhibit
.
Moreover,
theoretical
investigations
introduced
understand
underlying
mechanisms
for
enhancement.
Finally,
perspective
future
prospects
is
highlighted,
provide
valuable
inspiration
reference
development
next‐generation
alkali‐ion
Energy Materials and Devices,
Год журнала:
2023,
Номер
1(2), С. 9370017 - 9370017
Опубликована: Дек. 1, 2023
Carbon
materials
play
a
significant
role
as
key
components
within
devices
for
energy
storage
and
conversion
most
directly
impact
the
device
performance.
Nowadays,
need
advanced
carbon
has
grown
more
pressing
with
rising
demand
high-performance
energy-conversion
-storage
facilities.
Nonetheless,
realizing
performance
improvements
across
remains
challenging,
owing
to
difficulties
in
controlling
irregularly
organized
microstructures
specific
structures
concerned.
The
present
review,
an
aim
of
devisable
structures,
adjustable
functions,
breakthroughs,
proposes
concept
superstructured
carbons.
In
fact,
carbons
represent
category
carbon-based
materials,
characterized
by
precisely-built
pores,
networks,
interfaces.
This
unique
satisfies
particular
functional
demands
surpasses
rigid
structure
traditional
context
these
carbons,
we
methods
both
custom-built
target-oriented
functionality.
Towards
energy-related
reactions,
will
emphasize
targeted
property-structure
relationships
well-defined
Finally,
future
development
practicability
challenges
are
also
proposed.
Energy & environment materials,
Год журнала:
2024,
Номер
7(4)
Опубликована: Фев. 11, 2024
Lithium–sulfur
batteries
(LSBs)
are
widely
regarded
as
promising
next‐generation
due
to
their
high
theoretical
specific
capacity
and
low
material
cost.
However,
the
practical
applications
of
LSBs
limited
by
shuttle
effect
lithium
polysulfides
(LiPSs),
electronic
insulation
charge
discharge
products,
slow
LiPSs
conversion
reaction
kinetics.
Accordingly,
introduction
catalysts
into
is
one
effective
strategy
solve
issues
sluggished
LiPS
conversion.
Because
nearly
100%
atom
utilization
electrocatalytic
activity,
single‐atom
(SACs)
have
been
used
mediators
for
LSBs'
reactions.
Excitingly,
SACs
with
asymmetric
coordination
structures
exhibited
intriguing
superior
catalytic
activities
when
compared
traditional
M–N
4
active
sites.
In
this
review,
we
systematically
describe
recent
advancements
in
installation
asymmetrically
coordinated
structure
reactions
LSBs,
including
nitrogen
SACs,
heteroatom
support
bimetallic
SACs.
Particularly
noteworthy
discussion
mechanism
spanning
Finally,
a
perspective
on
future
developments
LSB
provided.
Abstract
The
development
and
application
of
lithium‐ion
batteries
present
a
dual
global
prospect
opportunity
challenge.
With
conventional
energy
sources
facing
reserve
shortages
environmental
issues,
have
emerged
as
transformative
technology
over
the
past
decade,
owing
to
their
superior
properties.
They
are
poised
for
exponential
growth
in
realms
electric
vehicles
storage.
cathode,
vital
component
batteries,
undergoes
chemical
electrochemical
reactions
at
its
surface
that
directly
impact
battery's
density,
lifespan,
power
output,
safety.
Despite
increasing
density
cathodes
commonly
encounter
surface‐side
with
electrolyte
exhibit
low
conductivity,
which
hinder
utility
high‐power
energy‐storage
applications.
Surface
engineering
has
compelling
strategy
address
these
challenges.
This
paper
meticulously
examines
principles
progress
cathode
materials,
providing
insights
into
potential
advancements
charting
trajectory
practical
implementation.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(30), С. 36394 - 36403
Опубликована: Июль 21, 2023
A
lithium-rich
manganese-based
cathode
material
(LRMC)
is
currently
considered
as
one
of
the
most
promising
next-generation
materials
for
lithium-ion
batteries,
which
has
received
much
attention,
but
LRMC
still
faces
some
key
scientific
issues
to
break
through,
such
poor
rate
capacity,
rapid
voltage,
capacity
decay,
and
low
first
coulomb
efficiency.
In
this
work,
homogeneous
Li2ZrO3
(LZO)
was
successfully
coated
on
surface
Li1.2Mn0.54Ni0.13Co0.13O2
(LRO)
by
molten
salt-assisted
sintering
technology.
good
chemical
electrochemical
stability,
can
effectively
inhibit
side
reaction
between
electrode
electrolytes
reduce
dissolution
transition
metal
ions.
Thus,
as-prepared
LRO@LZO
composites
are
expected
improve
cycling
performance.
It
be
found
that
discharge
specific
LRO
271
mAh
g–1
at
0.1
C,
retention
93.7%
after
100
cycles
1
C.
addition,
an
excellent
conductor,
prone
increasing
transfer
improving
LRO.
Therefore,
study
provides
a
new
solution
structure
stability
performance
LRMCs.
