ACS Catalysis,
Год журнала:
2024,
Номер
14(14), С. 10635 - 10647
Опубликована: Июнь 30, 2024
High-temperature
sintering
is
critical
for
efficient
hematite
photoanodes
in
terms
of
improving
the
crystallinity
and
minimizing
deficiencies.
However,
prolonged
conventional
furnace
annealing
requires
high
energy
consumption
simultaneously
results
serious
damage
to
transparent
conducting
oxide
(TCO)
substrate.
This
work
demonstrates
a
universal
wet-interfacial
Joule
heating
strategy
rapidly
synthesizing
high-performance
metastable
protohematite
photoanodes,
which
greatly
decreases
power
causes
less
TCO
substrate
by
shortening
time
∼90
s.
More
importantly,
phase
was
found
effectively
facilitate
charge
dynamics
bulk
surface
as-resulting
photoanode
increasing
donor
density
lowering
oxygen
evolution
reaction
overpotential
via
offering
dual
active
sites
(lattice
Fe
sites).
Moreover,
this
could
be
well
coupled
with
commonly
used
Ti-treatment
achieve
further
performance
enhancement
also
shows
feasibility
fabricating
TiO2
BiVO4
photoanodes.
study
opens
facile,
rapid,
reliable
approach
metal
contributing
development
photoelectrochemical
water
splitting.
Acta Physico-Chimica Sinica,
Год журнала:
2023,
Номер
0(0), С. 2305016 - 2305016
Опубликована: Янв. 1, 2023
Abstract:
Solid-state
lithium
batteries
(SSLBs)
have
the
potential
to
further
boost
energy
density
of
Li-ion
and
improve
their
safety
by
facilitating
use
Li-metal
anodes
limiting
flammability,
respectively.
Solid
electrolytes,
as
key
SSLB
materials,
significantly
impact
battery
performance,
among
which
composite
polymer/garnet
electrolytes
are
promising
materials
for
manufacturing
SSLBs
on
a
large
scale,
owing
polymer
electrolyte
processing
ease
in
combination
with
thermal
stabilities
high
ionic
conductivities
garnet
both
beneficial.
Uniformly
dispersing
particles
matrix
is
important
ensuring
highly
ionically
conductive
electrolyte.
However,
nanoparticle
surface
energies
incompatible
organic–inorganic
interfaces
lead
particle
agglomeration
poorly
With
aim
promoting
Li6.4La3Zr1.4Ta0.6O12
(LLZTO)
dispersion
solvents
matrices,
this
study,
we
introduced
3-glycidyloxypropyl
trimethoxy
silane
(GPTMS)
coupling
agent
onto
LLZTO
surface.
A
5-nm-thick
GPTMS
shell
was
constructed
each
covalently
bonding
molecules
nanoparticle.
The
lipophilic
epoxy
group
enables
uniform
GPTMS-modified
nanoparticles
(LLZTO@GPTMS)
organic
solvents,
such
acetonitrile,
N-methylpyrrolidone,
N,N-dimethylformamide.
Particle-size-distribution
experiments
reveal
that
LLZTO-nanoparticle
dispersity
positively
correlated
solvent
polarity.
Well-dispersed
suspensions
led
superior
polyethylene-oxide-based
(PEO-based)
2.31
×
10-4
S·cm-1
at
30
°C.
Both
symmetric
LiFePO4
(LFP)
cathodes,
lithium-metal
anodes,
optimal
PEO:
LLZTO@GPTMS
exhibited
prolonged
cycling
lives.
Moreover,
polyethylene
separator
homogeneously
coated
following
modification.
LFP|Li
LLZTO@GPTMS-coated
PE
separators
better
than
those
unmodified
LLZTO/PE.
This
study
demonstrated
effectively
improves
dispersibility
also
instructive
other
systems.
Advanced Materials,
Год журнала:
2024,
Номер
36(25)
Опубликована: Март 14, 2024
Multifunctional
flexible
electronics
present
tremendous
opportunities
in
the
rapidly
evolving
digital
age.
One
potential
avenue
to
realize
this
goal
is
integration
of
polyoxometalates
(POMs)
and
ionic
liquid-based
gels
(ILGs),
but
challenge
macrophase
separation
due
poor
compatibility,
especially
caused
by
repulsion
between
like-charged
units,
poses
a
significant
hurdle.
Herein,
possibilities
producing
diverse
homogenous
POMs-containing
ionohydrogels
nanoconfining
POMs
liquids
(ILs)
within
an
elastomer-like
polyzwitterionic
hydrogel
using
simple
one-step
random
copolymerization
method,
are
expanded
vastly.
The
incorporation
polyzwitterions
provides
nanoconfined
microenvironment
effectively
modulates
excessive
electrostatic
interactions
POMs/ILs/H
Vanadium
redox
flow
battery
(VRFB)
is
a
type
of
energy
storage
device
known
for
its
large-scale
capacity,
long-term
durability,
and
high-level
safety.
It
serves
as
an
effective
solution
to
address
the
instability
intermittency
renewable
sources.
Carbon-based
materials
are
widely
used
VRFB
electrodes
due
cost-effectiveness
well-stability.
However,
pristine
need
proper
modification
overcome
original
poor
hydrophilicity
fewer
reaction
active
sites.
Adjusting
carbon
structure
recognized
viable
method
boost
electrochemical
activity
electrodes.
This
review
delves
into
advancements
in
research
related
ordered
disordered
including
adjusting
methods,
structural
characteristics,
catalytic
properties.
Ordered
structures
categorized
nanoscale
macroscale
orderliness
based
on
size,
leading
improved
conductivity
overall
performance
electrode.
Disordered
encompass
methods
such
doping
atoms,
grafting
functional
groups,
creating
engineered
holes
enhance
sites
hydrophilicity.
Based
current
findings
electrode
structures,
this
work
puts
forth
some
promising
prospects
future
feasibility.
ACS Energy Letters,
Год журнала:
2025,
Номер
unknown, С. 726 - 733
Опубликована: Янв. 11, 2025
Solid
electrolytes
enhance
lithium-ion
battery
safety
by
eliminating
solvent
leakage
risks
but
face
challenges
in
scalability
and
energy
density
for
broader
commercial
applications.
This
study
develops
a
hybrid
solid
electrolyte
(HSE)
combining
gel
polymer
with
3D
porous
garnet
microstructure
to
improve
safety.
Photonic
sintering
(PS)
is
employed
rapid,
selective
sintering,
allowing
the
direct
application
of
HSE
substrates
electrodes,
enhancing
fabrication
efficiency.
PS
prevents
particle
overgrowth
reduces
volatile
element
loss,
offering
precise
densification
control.
The
fabricated
demonstrates
notable
thermal
stability
high
ionic
conductivity
(1.13
S/cm).
Pouch-type
batteries
incorporating
maintain
over
99%
Coulombic
efficiency
∼82%
capacity
retention
after
100
cycles
at
0.5
C
under
ambient
conditions.
innovative
approach
represents
significant
advancement
solid-state
manufacturing.
High-entropy
metal
oxides
(HEOs)
have
recently
received
growing
attention
for
broad
energy
conversion
and
storage
applications
due
to
their
tunable
properties.
HEOs
typically
involve
the
combination
of
multiple
cations
in
a
single
oxide
lattice,
thus
bringing
distinctive
structures,
controllable
elemental
composition,
functional
Many
synthesis
methods
been
reported,
such
as
solid-state
reactions
carbon
thermal
shock
methods.
These
frequently
are
energy-intensive
or
require
relatively
expensive
heating
equipment.
In
this
work,
we
report
an
ultrafast
photoflash
method
HEO
nanoparticles
on
diverse
substrates.
The
input
is
provided
by
commercial
Xe
unit,
which
triggers
exothermic
convert
salt
precursors
within
tens
milliseconds.
formation
attributed
(∼106
K/s)
cooling
(∼105
rates
overall
high
temperature
(>1000
K)
during
process.
When
synthesized
CoNiFeCrMn
(HEO)
tested
oxygen
evolution
reaction
electrocatalyst,
it
shows
similar
activity
materials
prepared
other
We
believe
provides
simple
many
others
synthesize
explore
properties
potential
applications.
Energy & Fuels,
Год журнала:
2023,
Номер
37(22), С. 17134 - 17160
Опубликована: Окт. 26, 2023
Graphene
oxide
(GO),
a
single
sheet
of
graphite
oxide,
has
shown
its
potential
applications
in
electrochemical
energy
storage
and
conversion
devices
as
result
remarkable
properties,
such
large
surface
area,
appropriate
mechanical
stability,
tunability
electrical
well
optical
properties.
Furthermore,
the
presence
hydrophilic
functionalities
on
basal
edge
planes
induces
other
relevant
which
make
GO
an
attractive
material
for
applications.
On
account
having
structural
diversity
enhanced
overall
crucial
composites
have
attracted
much
attention
contribution
devices,
batteries,
supercapacitors,
fuel
cells
water
electrolyzers.
Previous
review
reports
demonstrated
individual
or
reduced
graphene
(RGO)
either
devices.
The
present
highlights
all
recent
developments
RGO
both
along
with
synthesis
methodologies,
are
to
unveil
outperforming
properties
RGO.
transition
various
chemical
methods,
including
Brodie
improved
Hummers
approaches
been
described
importance
GO.
Utilization
predominantly
electrodes
electrolytes
membranes
further
diversify
multiple
applicability
variable
functional
Multiple
Li-ion,
Na-ion,
Li–S,
flow
batteries
performance
introduction
also
excellent
proton-exchange
membrane
cells,
methanol
electrolyzers,
discussed
this
review.
This
summarizes
methodologies
their
allied
challenges
future
perspectives.
Abstract
Electrochemical
carbon
dioxide
reduction
(CO
2
RR),
as
an
emerging
technology,
can
combine
with
sustainable
energies
to
convert
CO
into
high
value‐added
products,
providing
effective
pathway
realize
neutrality.
However,
the
activation
energy
of
,
low
mass
transfer,
and
competitive
hydrogen
evolution
reaction
(HER)
leads
unsatisfied
catalytic
activity.
Recently,
Indium
(In)‐based
materials
have
attracted
significant
attention
in
RR
a
series
regulation
strategies
nanostructured
engineering
are
exploited
rationally
design
various
advanced
In‐based
electrocatalysts,
which
forces
necessary
comprehensive
fundamental
summary,
but
there
is
still
scarcity.
Herein,
this
review
provides
systematic
discussion
nanostructure
for
efficient
electrocatalytic
conversion
fuels.
These
including
morphology,
size,
composition,
defects,
surface
modification,
interfacial
structure,
alloying,
single‐atom
summarized
exploring
internal
relationship
between
performance
physicochemical
properties
catalysts.
The
correlation
electronic
structure
adsorption
behavior
intermediates
highlighted
gain
in‐depth
understanding
kinetics
RR.
Moreover,
challenges
opportunities
proposed,
expected
inspire
development
other
catalysts
