Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 3, 2024
Abstract
Carbonaceous
materials
hold
great
promise
for
K‐ion
batteries
due
to
their
low
cost,
adjustable
interlayer
spacing,
and
high
electronic
conductivity.
Nevertheless,
the
narrow
spacing
significantly
restricts
potassium
storage
ability.
Herein,
hierarchical
N,
S
co‐doped
exfoliated
holey
graphene
(NSEHG)
with
ultrahigh
pyridinic/pyrrolic
N
(90.6
at.%)
large
(0.423
nm)
is
prepared
through
micro‐explosion
assisted
thermal
exfoliation
of
oxide
(GO).
The
underlying
mechanism
micro‐explosive
GO
revealed.
NSEHG
electrode
delivers
a
remarkable
reversible
capacity
(621
mAh
g
−1
at
0.05
A
),
outstanding
rate
capability
(155
10
robust
cyclic
stability
(0.005%
decay
per
cycle
after
4400
cycles
5
exceeding
most
previously
reported
anodes
in
batteries.
In
addition,
exhibits
encouraging
performances
as
Li‐/Na‐ion
Furthermore,
assembled
activated
carbon||NSEHG
potassium‐ion
hybrid
capacitor
can
deliver
an
impressive
energy
density
141
Wh
kg
stable
cycling
performance
96.1%
capacitance
retention
4000
1
.
This
work
offer
helpful
fundamental
insights
into
design
scalable
fabrication
high‐performance
alkali
metal
ion
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Jan. 26, 2023
Abstract
In
the
field
of
lithium-based
batteries,
there
is
often
a
substantial
divide
between
academic
research
and
industrial
market
needs.
This
in
part
driven
by
lack
peer-reviewed
publications
from
industry.
Here
we
present
non-academic
view
on
applied
batteries
to
sharpen
focus
help
bridge
gap
research.
We
our
discussion
key
metrics
challenges
be
considered
when
developing
new
technologies
this
also
explore
need
consider
various
performance
aspects
unison
material/technology.
Moreover,
investigate
suitability
supply
chains,
sustainability
materials
impact
system-level
cost
as
factors
that
accounted
for
working
technologies.
With
these
considerations
mind,
then
assess
latest
developments
battery
industry,
providing
views
prospects
ACS Energy Letters,
Journal Year:
2023,
Volume and Issue:
8(3), P. 1379 - 1389
Published: Feb. 13, 2023
To
date,
dilute
ether
electrolytes
have
been
believed
to
be
incompatible
with
graphite
in
Li-ion
batteries
due
the
detrimental
solvent
cointercalation
and
exfoliation.
Here,
we
provide
design
criteria
of
for
a
reversible
anode
based
on
tailoring
solvation
structures
thermodynamic
properties.
We
clarify
that
solvents
can
support
reversibly
by
modulating
anion.
Our
redesigned
electrolyte
consisting
single-solvent
1,3-dioxolane
(DOL)
1
M
single-salt
lithium
bis(fluorosulfonyl)imide
(LiFSI)
shows
weakened
Li-solvent
interaction
results
an
inorganic-rich
solid-electrolyte
interphase.
Consequently,
achieved
∼99.9%
Coulombic
efficiency
>96%
capacity
retention
(∼350
mAh/g)
after
300
cycles
at
C/5
using
natural
graphite.
The
weakly
solvated
maintains
desirable
transport
properties,
enabling
better
rate
capability
than
carbonate
areal
2–4
mAh/cm2.
demonstrated
potential
facile
desolvation-based
intercalation
chemistry
graphite,
creating
viable
path
toward
fast-charge
Li
batteries.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(22)
Published: March 25, 2024
Abstract
Organics
are
gaining
significance
as
electrode
materials
due
to
their
merits
of
multi‐electron
reaction
sites,
flexible
rearrangeable
structures
and
redox
reversibility.
However,
organics
encounter
finite
electronic
conductivity
inferior
durability
especially
in
organic
electrolytes.
To
circumvent
above
barriers,
we
propose
a
novel
design
strategy,
constructing
conductive
network
with
extended
π–π
superposition
effect
by
manipulating
intermolecular
interaction.
Tetralithium
1,4,5,8‐naphthalenetetracarboxylate
(LNTC)
interwoven
carbon
nanotubes
(CNTs)
forms
LNTC@CNTs
composite
firstly
for
Li‐ion
storage,
where
multiple
conjugated
carboxyls
contribute
sufficient
storage
the
unique
feature
enables
electrolyte
charge
mobility
conveniently
combining
electron
delocalization
π‐conjugated
system,
enhanced
between
LNTC
CNTs
endows
laudable
structural
robustness.
Accordingly,
maintain
an
excellent
capacity
retention
96.4
%
after
400
cycles.
Electrochemical
experiments
theoretical
simulations
elucidate
fast
kinetics
reversible
stability
owing
effect,
while
reversibly
rearranged
into
enolates
during
charging/discharging.
Consequently,
dual‐ion
battery
this
anode
expanded
graphite
cathode
exhibits
peak
specific
122
mAh
g
−1
long
cycling
life
84.2
900
