Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
60(46), С. 24467 - 24472
Опубликована: Сен. 14, 2021
Heteroaromatic-conjugated
aromatic
molecules
have
inspired
numerous
interests
in
rechargeable
batteries
like
Li-ion
batteries,
but
were
limited
by
low
conductivity
and
easy
dissolution
electrolytes.
Herein,
we
immobilize
a
nitrogen-rich
molecule
tricycloquinazoline
(TQ)
CuO4
unit
into
two-dimensional
(2D)
conductive
metal-organic
framework
(MOF)
to
unlock
their
potential
for
Li+
storage.
TQ
was
identified
redox
activity
with
the
first
time.
With
synergistic
effect
of
unit,
2D
MOF,
named
Cu-HHTQ
(HHTQ=2,3,7,8,12,13-hexahydroxytricycloquinazoline),
can
facilitate
/e-
transport
ensure
resilient
electrode,
resulting
high
capacity
657.6
mAh
g-1
at
600
mA
extraordinary
high-rate
capability
impressive
cyclability.
Our
findings
highlight
an
efficient
strategy
constructing
electrode
materials
energy
storage
combining
multiple
redox-active
moieties
MOFs.
Advanced Functional Materials,
Год журнала:
2021,
Номер
31(51)
Опубликована: Сен. 19, 2021
Abstract
Constructing
electrode
materials
with
fast
ions
and
electrons
transport
channels
is
an
effective
solution
to
achieve
high‐power‐density
long‐cycle
potassium‐ion
batteries
(PIBs).
Herein,
completely
opening
radial
pores
in
N/O
dual‐doped
carbon
nanospheres
(RPCNSs)
are
constructed
as
anode
for
high‐power
PIBs.
The
RPCNS
hierarchical
structure
(micro/meso/macropores
channels)
dual‐doping
permits
speedy
transportation
within
the
anode,
achieving
a
reversible
capacity
of
346
mAh
g
−1
at
50
mA
after
360
cycles
long‐term
cycling
life
over
2000
without
obvious
attenuation.
situ
Raman
kinetic
analysis
(in
electrochemical
impedance
spectroscopy
galvanostatic
intermittent
titration)
suggest
that
exquisitely
designed
pore
heterodoping
enable
highly
reaction
de/intercalation
kinetics.
Moreover,
full
cells
packaged
can
be
fully
charged
10
s
exhibit
highest
charge
power
density
24
866
W
kg
longest
endurance
5000
reported
unique
structural
engineering
provides
new
way
storage
devices.
Advanced Energy Materials,
Год журнала:
2021,
Номер
12(4)
Опубликована: Июнь 26, 2021
Abstract
2D
materials
are
regarded
as
promising
electrode
for
rechargeable
batteries
because
of
their
advantages
in
providing
ample
active
sites
and
improving
electrochemical
reaction
kinetics.
However,
it
remains
a
great
challenge
to
fulfill
all
requirements
high‐performance
energy
storage
devices
terms
electronic
conductivity,
the
number
accessible
sites,
structural
stability,
mass
production
capability.
Recent
advances
constructing
material‐based
heterostructures
offer
opportunities
utilizing
synergistic
effects
between
individual
blocks
achieve
optimized
properties
enhanced
performance.
In
this
perspective,
latest
summarized,
with
particular
emphasis
on
multifunctional
roles
batteries.
Synthetic
strategies,
features
mixed
dimensionalities,
structure
engineering
distinct
functionalities
various
applications
systematically
introduced.
Finally,
challenges
perspectives
presented
highlight
future
developing
practical
storage.
Advanced Energy Materials,
Год журнала:
2021,
Номер
11(7)
Опубликована: Янв. 5, 2021
Abstract
Mass
transport
plays
an
important
role
in
the
process
of
metal
deposition
and
charging/discharging
kinetics
a
rechargeable
battery.
The
rational
regulation
mass
behavior
to
realize
optimum
ion‐transfer
direction
rate
can
enable
uniform
nucleation
reduced
concentration
polarization,
which
is
favorable
for
overcoming
dendrite
growth
lithium
plating
issues
batteries
fast‐charging
batteries,
respectively.
Here,
recent
progress
achieved
through
mass‐transport
are
summarized.
An
introduction
discussion
its
decisive
battery
operation
provided,
followed
by
exploration
correlation
between
performance.
Some
future
perspectives
research
directions
regulating
high‐performance
also
discussed.
ACS Nano,
Год журнала:
2021,
Номер
15(4), С. 6735 - 6746
Опубликована: Март 19, 2021
Transition-metal
sulfides
(TMSs)
powered
by
conversion
and/or
alloying
reactions
are
considered
to
be
promising
anode
materials
for
advanced
lithium-ion
batteries
(LIBs)
and
sodium-ion
(SIBs).
However,
the
limited
electronic
conductivity
large
volume
expansion
severely
hinder
their
practical
application.
Herein,
we
report
a
covalent
coupling
strategy
TMS-based
using
amide
linkages
bind
TMSs
carbon
nanotubes
(CNTs).
In
synthesis,
thiourea
acts
as
not
only
capping
agent
morphology
control
but
also
linking
coupling.
As
proof
of
concept,
covalently
coupled
ZnS/CNT
composite
(CC-ZnS/CNT)
has
been
prepared,
with
ZnS
nanoparticles
(∼10
nm)
tightly
anchored
on
CNT
bundles.
The
compact
ZnS-CNT
heterojunctions
greatly
beneficial
facilitating
electron/ion
transfer
ensuring
structural
stability.
Due
strong
interaction
between
CNTs,
presents
prominent
pseudocapacitive
behavior
highly
reversible
electrochemical
processes,
thus
leading
superior
long-term
stability
excellent
rate
capability,
delivering
capacities
333
mAh
g–1
at
2
A
over
4000
cycles
LIBs
314
5
after
500
SIBs.
Consequently,
CC-ZnS/CNT
exhibits
great
competence
applications
in
SIBs,
is
proposed
approach
designing
high-performance
materials.
Nano-Micro Letters,
Год журнала:
2021,
Номер
13(1)
Опубликована: Авг. 20, 2021
Abstract
As
a
new
member
in
two-dimensional
materials
family,
transition
metal
carbides
(TMCs)
have
many
excellent
properties,
such
as
chemical
stability,
in-plane
anisotropy,
high
conductivity
and
flexibility,
remarkable
energy
conversation
efficiency,
which
predispose
them
for
promising
applications
transparent
electrode,
flexible
electronics,
broadband
photodetectors
battery
electrodes.
However,
up
to
now,
their
device
are
the
early
stage,
especially
because
controllable
synthesis
is
still
great
challenge.
This
review
systematically
summarized
state-of-the-art
research
this
rapidly
developing
field
with
particular
focus
on
structure,
property,
applicability
of
TMCs.
Finally,
current
challenges
future
perspectives
outlined
application
2D
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(32), С. 14638 - 14646
Опубликована: Июль 6, 2022
Lithium-sulfur
(Li-S)
batteries
have
great
potential
as
high-energy-density
energy
storage
devices.
Electrocatalysts
are
widely
adopted
to
accelerate
the
cathodic
sulfur
redox
kinetics.
The
interactions
among
electrocatalysts,
solvents,
and
lithium
salts
significantly
determine
actual
performance
of
working
Li-S
batteries.
Herein,
bis(trifluoromethanesulfonyl)imide
(LiTFSI),
a
commonly
used
salt,
is
identified
aggravate
surface
gelation
on
MoS2
electrocatalyst.
In
detail,
trifluoromethanesulfonyl
group
in
LiTFSI
interacts
with
Lewis
acidic
sites
electrocatalyst
generate
an
electron-deficient
center.
center
high
acidity
triggers
cationic
polymerization
1,3-dioxolane
solvent
generates
gel
layer
that
reduces
electrocatalytic
activity.
To
address
above
issue,
basic
salt
iodide
(LiI)
introduced
block
interaction
between
inhibit
gelation.
Consequently,
LiI
additive
realize
ultrahigh
density
416
W
h
kg-1
at
pouch
cell
level.
This
work
affords
effective
boost
activity
practical
deepens
fundamental
understanding
systems.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(8)
Опубликована: Янв. 3, 2023
Rechargeable
aqueous
zinc
ion
batteries
(AZIBs)
promise
high
energy
density,
low
redox
potential,
cost
and
safety;
however,
their
cycle
performances
are
seriously
insufficient
to
restrict
the
progress
in
this
field.
We
propose
a
new
concept
of
atomic
electrode
formed
on
graphdiyne
(GDY).
This
idea
was
synthesized
by
selectively,
uniformly,
stably
anchoring
Zn
atoms
GDY
at
beginning
plating.
The
induced
grow
into
larger
size
clusters,
which
continue
nanoflat.
Finally,
heterojunction
interface
is
without
any
dendrites
side
reactions,
even
current
densities.
Such
stepwise
induction
growth
greatly
suppresses
formation
dendrites,
resulting
electroplating/stripping
reversibility
lifespan
AZIBs.
Advanced Functional Materials,
Год журнала:
2021,
Номер
32(13)
Опубликована: Дек. 9, 2021
Abstract
Hybrid
capacitors
exhibit
promise
to
bridge
the
gap
between
rechargeable
high‐energy
density
batteries
and
high‐power
supercapacitors.
This
separation
is
due
sluggish
ion/electron
diffusion
inferior
structural
stability
of
battery‐type
materials.
Here,
a
topochemistry‐driven
method
for
constructing
expanded
2D
rhenium
selenide
intercalated
by
nitrogen‐doped
carbon
hybrid
(E‐ReSe
2
@INC)
with
strong‐coupled
interface
weak
van
der
Waals
forces,
proposed.
X‐ray
absorption
spectroscopy
analysis
dynamically
tracks
transformation
from
ReO
into
ReC
bonds.
The
bridging
bonds
act
as
electron
transport
channels
enable
improved
conductivity
accelerated
reaction
kinetics.
interlayer‐spacing
ReSe
layer
INC
facilitates
ion
ensures
stability.
As
expected,
E‐ReSe
@INC
achieves
an
rate
capability
(252.5
mAh
g
−1
at
20
A
)
long‐term
cyclability
(89.6%
over
3500
cycles).
Moreover,
theoretical
simulations
reveal
favorable
Na
+
storage
kinetics
can
be
ascribed
its
low
bonding
energy
−0.06
eV
barrier
0.08
sodium
ions.
Additionally,
it
demonstrated
that
3D
printed
sodium‐ion
deliver
high
energies/power
densities
81.4
Wh
kg
/0.32
mWh
cm
−2
9992.1
W
/38.76
mW
,
well
applicability
in
wide
temperature
range.