Abstract
Microporous
carbon
confined
nano
silicon
composites
(Si/m‐C)
are
considered
to
be
the
best
anode
materials
for
high‐energy‐density
lithium‐ion
batteries
compared
with
other
Si‐based
such
as
SiO,
due
high
initial
Coulombic
efficiency
(ICE)
and
capacity,
well
good
cycling
stability.
However,
there
is
a
lack
of
multilevel
comprehensive
evaluation
Si/m‐C,
which
poses
potential
risks
commercial
application.
Herein,
combined
quantitative
titration,
mechanical
characterization,
bulk/interface
evolution
analysis,
systematic
commercialized
Si/m‐C
from
particle
level
cylindrical
cell
conducted,
revealing
decay
mechanism
proposing
corresponding
solutions.
Among
them,
it
demonstrated
that
still
withstands
huge
volume
expansion
over
200%
poor
strength,
causing
electrical
contact
loss
active
Li
x
Si
severe
interfacial
side
reactions.
Moreover,
even
blending
more
than
90%
graphite
cannot
completely
suppress
its
volumetric
strain,
combination
highly
flexible
single‐walled
nanotubes
(SWCNT)
necessary.
In
response
this,
32700‐type
designed
capacity
9.5
Ah
assembled
by
mixing
SWCNT
anode,
achieving
long‐term
stability
300
cycles
at
0.5
C
retention
94.8%.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(32)
Опубликована: Июнь 5, 2024
Abstract
Aqueous
zinc
metal
batteries
(AZMBs)
have
emerged
as
a
focal
point
of
interest
in
academic
research
and
industrial
strategic
planning.
Zinc
powder
(ZP)
is
poised
to
assume
prominent
position
both
future
practical
applications
due
its
high
Zn
utilization
rate
processability.
However,
critical
challenges
need
be
addressed
before
realizing
substantial
progress.
Notably,
severe
voltage
polarization
gas
production
ZP
electrodes
stand
out
the
primary
causes
battery
failure,
differing
with
foil
where
short
circuits
caused
by
dendrites
contribute
failure.
While
numerous
comprehensive
reviews
offered
effective
strategies
for
foil,
systematic
summary
still
lacking.
For
ZP,
electrode
preparation
dictates
performance.
This
review
summarizes
criteria
optimal
electrodes,
covering
components,
methods,
technique
parameters.
It
emphatically
introduces
underlying
water‐related
side
reactions
briefly
analyzes
stripping/plating
behaviors
electrodes.
The
status
quo
ZP‐based
then
discussed
categories
current
collector,
conductive
scaffold,
binder,
electrolytes.
Finally,
potential
avenues
are
proposed
from
three
aspects
enhance
focus
on
facilitate
application
AZMBs.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 8, 2025
Abstract
Hard
carbon
(HC)
is
gaining
recognition
as
a
prospective
anode
material
for
sodium‐ion
batteries
(SIBs),
showing
considerable
promise
in
energy
storage
applications.
The
binder
key
determinant
of
the
microenvironment
electrodes,
which
controls
charge
transport
and
mechanical
properties.
Herein,
study
investigates
application
Gluten
(GT),
natural
mesh
binder,
enhancing
overall
properties
HC
anode.
It
found
that
numerous
functional
groups
GT
quickly
form
hydrogen
bonds
with
particles
after
slight
hydration,
effectively
improving
interlocking
significantly
reducing
degradation
during
cycles.
Advanced
characterization
combination
theoretical
simulations
shows
reduces
dissociation
PF
6
−
,
promotes
formation
thin,
uniform
NaF‐rich
solid‐electrolyte
interface
(SEI)
on
surface.
Consequently,
HC‐GT
demonstrates
outstanding
electrochemical
performance,
retaining
83%
its
capacity
1000
cycles
at
0.5
A
g
−1
achieving
an
initial
coulombic
efficiency
≈88%.
Moreover,
full
cell
excellent
cycling
stability,
75.8
mA
h
800
1
C.
This
work
underscores
significance
selecting
appropriate
binders
to
achieve
high‐performance
anodes,
offering
new
perspective
optimizing
performance
SIBs.
