Small,
Journal Year:
2024,
Volume and Issue:
20(33)
Published: April 2, 2024
Highly
efficient
water
splitting
electrocatalyst
for
producing
hydrogen
as
a
renewable
energy
source
offers
potential
to
achieve
net-zero.
However,
it
has
significant
challenges
in
using
transition
metal
electrocatalysts
alternatives
noble
metals
due
their
low
efficiency
and
durability,
furthermore,
the
reliance
on
electricity
generation
from
fossil
fuels
leads
unavoidable
carbon
emissions.
Here,
highly
self-powered
system
integrated
is
designed
with
triboelectric
nanogenerator
(TENG)
Ni
InfoMat,
Journal Year:
2023,
Volume and Issue:
6(1)
Published: Nov. 27, 2023
Abstract
Electrochemical
water
splitting
represents
a
promising
technology
for
green
hydrogen
production.
To
design
advanced
electrocatalysts,
it
is
crucial
to
identify
their
active
sites
and
interpret
the
relationship
between
structures
performance.
Materials
extensively
studied
as
electrocatalysts
include
noble‐metal‐based
(e.g.,
Ru,
Ir,
Pt)
non‐noble‐metal‐based
3d
transition
metals)
compounds.
Recently,
advancements
in
characterization
techniques
theoretical
calculations
have
revealed
novel
unusual
sites.
The
present
review
highlights
latest
achievements
discovery
identification
of
various
unconventional
electrochemical
splitting,
with
focus
on
state‐of‐the‐art
strategies
determining
true
establishing
structure–activity
relationships.
Furthermore,
we
discuss
remaining
challenges
future
perspectives
development
next‐generation
By
presenting
fresh
perspective
reaction
involved
this
aims
provide
valuable
guidance
study
industrial
applications.
image
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(14)
Published: Feb. 17, 2023
With
the
ultimate
atomic
utilization,
well-defined
configuration
of
active
sites
and
unique
electronic
properties,
catalysts
with
single-atom
(SASs)
exhibit
appealing
performance
for
electrocatalytic
green
hydrogen
generation
from
water
splitting
further
utilization
via
hydrogen-oxygen
fuel
cells,
such
that
a
vast
majority
synthetic
strategies
toward
SAS-based
(SASCs)
are
exploited.
In
particular,
room-temperature
electrosynthesis
under
atmospheric
pressure
offers
novel,
safe,
effective
route
to
access
SASs.
Herein,
recent
progress
in
ambient
SASs
sustainable
future
opportunities
discussed.
A
systematic
summary
is
started
on
three
kinds
electrochemically
routes
SASs,
including
electrochemical
etching
(ECE),
direct
electrodeposition
(DED),
leaching-redeposition
(ELR),
associated
advanced
characterization
techniques.
Next,
their
applications
energy
conversion
evolution
reaction,
oxygen
overall
splitting,
reduction
reaction
reviewed.
Finally,
brief
conclusion
remarks
challenges
regarding
development
high-performance
cost-effective
SASCs
many
other
presented.
Discover Nano,
Journal Year:
2024,
Volume and Issue:
19(1)
Published: Jan. 3, 2024
Abstract
This
comprehensive
review
explores
the
transformative
role
of
nanomaterials
in
advancing
frontier
hydrogen
energy,
specifically
realms
storage,
production,
and
transport.
Focusing
on
key
like
metallic
nanoparticles,
metal–organic
frameworks,
carbon
nanotubes,
graphene,
article
delves
into
their
unique
properties.
It
scrutinizes
application
elucidating
both
challenges
advantages.
The
meticulously
evaluates
diverse
strategies
employed
to
overcome
limitations
traditional
storage
methods
highlights
recent
breakthroughs
nanomaterial-centric
storage.
Additionally,
investigates
utilization
enhance
emphasizing
as
efficient
nanocatalysts
boosting
fuel
cell
efficiency.
provides
a
overview
various
potential
applications
cells.
exploration
extends
realm
transport
delivery,
tanks
pipelines,
offering
insights
investigated
for
this
purpose
advancements
field.
In
conclusion,
underscores
immense
propelling
energy
frontier.
emphasizes
imperative
continued
research
aimed
at
optimizing
properties
performance
existing
while
advocating
development
novel
with
superior
attributes
serves
roadmap,
shedding
light
pivotal
can
play
clean
sustainable
technologies.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(35)
Published: July 4, 2023
Abstract
Potassium
metal
batteries
(KMBs)
are
ideal
choices
for
high
energy
density
storage
system
owing
to
the
low
electrochemical
potential
and
cost
of
K.
However,
practical
KMB
applications
suffer
from
intrinsically
active
K
anode,
which
would
bring
serious
safety
concerns
due
easier
generation
dendrites.
Herein,
explore
a
facile
approach
tackle
this
issue,
we
propose
regulate
plating/stripping
via
interfacial
chemistry
engineering
commercial
polyolefin‐based
separator
using
multiple
functional
units
integrated
in
tailored
organic
framework.
As
case
study,
MIL‐101(Cr)
offer
elastic
modulus,
facilitate
dissociation
potassium
salt,
improve
+
transfer
number
homogenize
flux
at
electrode/electrolyte
interface.
Benefiting
these
favorable
features,
uniform
stable
is
realized
with
regulated
separator.
Full
battery
assembled
showed
∼19.9
%
higher
discharge
capacity
than
that
glass
fiber
20
mA
g
−1
much
better
cycling
stability
rates.
The
generality
our
validated
KMBs
different
cathodes
electrolytes.
We
envision
strategy
suppress
dendrite
formation
by
surface
tailor‐designed
can
be
extended
other
metal/metal
ion
batteries.
Small,
Journal Year:
2024,
Volume and Issue:
20(31)
Published: March 5, 2024
Abstract
The
high
oxygen
electrocatalytic
overpotential
of
flexible
cathodes
due
to
sluggish
reaction
kinetics
result
in
low
energy
conversion
efficiency
wearable
zinc–air
batteries
(ZABs).
Herein,
lignin,
as
a
3D
carbon‐rich
macromolecule,
is
employed
for
partial
replacement
polyacrylonitrile
and
constructing
freestanding
air
electrodes
(FFAEs)
with
large
amount
mesopores
multi‐hollow
channels
via
electrospinning
combined
annealing
strategy.
presence
lignin
disordered
structure
decreases
the
graphitization
carbon
fibers,
increases
structural
defects,
optimizes
pore
structure,
facilitating
enhancement
electron‐transfer
kinetics.
This
unique
effectively
improves
accessibility
graphitic‐N/pyridinic‐N
reduction
(ORR)
activity
pyridinic‐N
evolution
(OER)
FFAEs,
accelerating
mass
transfer
process
oxygen‐active
species.
resulting
N‐doped
hollow
fiber
films
(NHCFs)
exhibit
superior
bifunctional
ORR/OER
performance
potential
difference
only
0.60
V.
rechargeable
ZABs
NHCFs
metal‐free
possess
long‐term
cycling
stability.
Furthermore,
can
be
used
FFAEs
which
have
specific
capacity
good
stability
under
different
bending
states.
work
paves
way
design
produce
highly
active
electrochemical
devices.
Smart Materials in Manufacturing,
Journal Year:
2024,
Volume and Issue:
2, P. 100052 - 100052
Published: Jan. 1, 2024
Defects
in
nanomaterials
have
emerged
as
a
pivotal
aspect
influencing
their
properties
and
diverse
applications
across
numerous
industries.
This
comprehensive
review
explores
the
intricate
relationship
between
defects,
primarily
carbon
nanotubes
graphene,
implications
spectrum
of
applications.
Beginning
with
an
introduction
delving
into
significance
types
elucidates
multifaceted
impact
on
mechanical,
electrical,
environmental
characteristics
these
nanomaterials.
It
presents
detailed
analyses
studies
exploring
defects
shedding
light
effects
mechanical
electrical
properties,
alongside
characterizing
methods.
The
paper
meticulously
examines
extensive
array
involving
encompassing
electronics,
biomedical
advancements,
considerations
for
sustainability.
Furthermore,
it
systematically
incorporates
highlighting
precisely
defect
engineering
various
industries,
emphasizing
nuanced
role
tailoring
specific
concludes
by
summarizing
integral
play
shaping
future
nanomaterial
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(12), P. 20820 - 20830
Published: Nov. 29, 2022
Two-dimensional
conductive
metal–organic
frameworks
(2D
MOFs)
with
π–d
conjugations
exhibit
high
electrical
conductivity
and
diverse
coordination
structures,
making
them
constitute
a
desirable
platform
for
new
electronic
devices.
Defects
are
inevitable
in
the
self-assembly
process
of
2D
MOFs.
Arguably,
defect
engineering
that
deliberately
manipulates
defects
demonstrates
great
potential
to
enhance
electrocatalytic
activity
this
family
novel
materials.
Herein,
facile
universal
strategy
is
proposed
demonstrated
metal
vacancy
regulation
benzenehexathiolato
(BHT)
polymer
films.
Controllable
vacancies
can
be
produced
by
simply
tuning
proton
concentration
during
confined
at
liquid–liquid
interface.
This
but
design
has
been
proven
effective
class
materials
including
Cu-BHT,
Ni-BHT,
Ag-BHT
physicochemical
regulation.
To
further
demonstrate
feasibility
practicality
electrochemical
applications,
elaborately
fabricated
Cu-BHT
films
abundant
Cu
deliver
competitive
performance
sensing
H2O2.
Mechanistic
analysis
revealed
act
as
active
sites
adsorption
reduction
H2O2,
tuned
structure
boosts
reaction.
The
developed
advanced
confirms
excellent
commercial
sensors
findings
provide
insights
into
molecular
conducting
MOFs
sensors.
