High Entropy Metal Phosphide Activated Fluorinated Carbon as Electroactive Host for Extra High Cathode Capacity in Lithium–Sulfur Batteries
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 28, 2025
Abstract
Lithium–sulfur
(Li–S)
batteries
are
one
of
the
most
promising
high‐energy
battery
systems
due
to
high
theoretical
energy
density
(2600
Wh
kg
−1
).
However,
a
large
proportion
electro‐inert
host
materials
typically
employed
in
cathode
composites,
which
severely
reduces
practical
performance
Li–S
batteries.
In
this
study,
novel
approach
is
proposed
using
fluorinated
activated
carbon
(CF)
as
an
electroactive
sulfur
for
first
time,
can
release
extra
capacity
during
initial
operation.
Specifically,
with
activation
effect
situ
deposited
entropy
metal
phosphide
(HEP)
catalyst
Pd
0.34
Sn
0.15
Ni
0.05
Co
0.09
Cu
0.29
P
0.08
,
HEP/CF
almost
1.5
times
higher
than
pristine
CF.
Consequently,
S/HEP/CF
exhibits
discharge
(1059.2
mAh
g
−composite
at
0.1C),
rate
(476.5
2C)
and
long‐term
cycling
stability.
Moreover,
as‐prepared
retains
492.6
under
harsh
conditions
(sulfur
loading
3.2
mg
cm
−2
lean
electrolyte/sulfur
ratio
10
µL
This
work
demonstrates
new
strategy
designing
hosts
improve
Язык: Английский
Mo/VONC as a polysulfide immobilizer and catalyst to enhance performance of Lithium sulfur batteries
Journal of Electroanalytical Chemistry,
Год журнала:
2025,
Номер
unknown, С. 119143 - 119143
Опубликована: Апрель 1, 2025
Язык: Английский
Single-Atom Cobalt Catalyst with Boron and Nitrogen Codoped Graphene (Co-BN-G) Enables Adsorption and Catalytic Conversion of Polysulfides for High-Performance Lithium–Sulfur Batteries
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 7, 2024
In
lithium-sulfur
batteries,
the
shuttling
effect
and
sluggish
redox
conversion
of
soluble
polysulfides
lead
to
unsatisfactory
sulfur
utilization
capacity
retention.
this
research,
we
used
a
one-pot
hydrothermal
method
prepare
graphene
with
single-atom
Co
B,
N
codoped
as
host
in
Li-S
thereby
suppressing
facilitating
lithium
(LiPSs).
A
series
characterizations
demonstrated
that
dual
doping
B
introduces
more
lattice
defects
structural
deformations
oxide,
thus
enhancing
its
adsorption
polysulfides.
Simultaneously,
cobalt
can
also
polarize
accelerate
reaction
LiPSs.
The
cell
as-prepared
Co-BN-G
materials
exhibited
an
excellent
1034
mAh
g
Язык: Английский
Cobalt/nickel bimetallic ion synergistic effect for enhancing polysulfide adsorption and conversion in Li S batteries
Journal of Energy Storage,
Год журнала:
2024,
Номер
104, С. 114643 - 114643
Опубликована: Ноя. 18, 2024
Язык: Английский
Recent Advances in Non‐Carbon Dense Sulfur Cathodes for Lithium–Sulfur Battery with High Energy Density
ChemElectroChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 13, 2024
Abstract
The
seemingly
advantageous
features
of
carbon‐based
materials,
such
as
large
pore
volume
and
lightweight
structure,
could
actually
lead
to
low
tap
density
for
the
sulfur
cathode
excessive
electrolyte
consumption,
potentially
significantly
decreasing
energy
lithium–sulfur
battery.
Recently,
non‐carbon‐based
materials
composed
inorganic
matter
have
emerged
promising
candidates
creating
dense
cathodes
reducing
intake.
Additionally,
exhibits
strong
interactions
with
lithium
polysulfides,
which
can
address
intrinsic
problems
severe
shuttling
effect
poor
reaction
kinetics.
In
this
review,
we
first
discuss
relationship
between
Subsequently,
systematically
summarize
recent
advances
in
hosts.
Finally,
propose
future
research
directions
perspectives
host
inspire
realization
practical
battery
high
density.
Язык: Английский