Applied Organometallic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 25, 2024
ABSTRACT
The
development
of
low‐cost,
high‐efficiency,
stable,
and
structurally
adjustable
electrocatalysts
for
hydrogen
evolution
reaction
(HER)
is
great
significance
energy
conversion.
In
this
study,
two
new
Cu(I)
coordination
polymers
(CPs),
formulated
as
{[Cu(L
1
)](PF
6
)·CH
2
Cl
}
n
(
)
{[Cu
(L
1.5
(PPh
3
=
1,3‐bis[1‐(pyridin‐3‐ylmethyl)
‐1H‐benzimidazol‐2‐yl]propane,
L
1,4‐bis[1‐(3‐pyridylmethyl)‐1H‐benzimidazol‐2‐yl]butane),
were
synthesized
by
interfacial
diffusion
method
characterized
single‐crystal
x‐ray
diffraction
IR
UV–Vis
spectra.
Structural
analysis
shows
that
the
CP‐
a
one‐dimensional
chain
structure,
whereas
two‐dimensional
layered
which
due
to
different
modes
ligands
(bridging
chelation)
(bridging).
electrocatalytic
activity
HER
CPs
was
studied
preparing
modified
glassy
carbon
electrodes
(CP‐
/GCE
/GCE).
Electrochemical
studies
manifest
in
0.5
M
H
SO
4
,
overpotential
η
10
298K
Tafel
slope
b
are
−769
mV
173
dec
−1
/GCE,
−933
301
−930
298
bare/GCE,
respectively.
significantly
positive
shifted
decreased
compared
with
indicating
has
significant
order
>
≈
bare/GCE.
This
work
provides
an
important
reference
application
non‐noble
metal
field
electrocatalysis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 15, 2024
Abstract
Seawater
electrolysis
(SWE)
is
proposed
to
be
a
promising
approach
green
hydrogen
(H
2
)
production
but
its
large‐scale
deployment
faces
challenges
because
of
the
anodic
competing
chlorine
evolution
reaction
(CER)
and
high
energy
consumption.
To
address
these
challenges,
innovative
hybrid
SWE
systems
have
recently
emerged,
able
mitigate
interference
CER
substantially
reduce
electrical
needed.
Herein,
preparation
2D
layered
PtTe
nanosheets
(e‐PtTe
NSs)
using
liquid‐phase
exfoliation
method
reported,
which
show
outstanding
electrocatalytic
performance
for
(HER),
hydrazine
oxidation
(HzOR),
oxygen
reduction
reactions
(ORR)
in
seawater.
Using
e‐PtTe
NSs
as
trifunctional
catalysts,
two
are
demonstrated:
1)
hydrazine‐assisted
acid‐alkaline
dual‐electrolyte
seawater
electrolyzer
enabled
by
bipolar
membrane
(BPM‐OHzSWE),
can
simultaneously
produce
H
generate
electricity
through
harvesting
electrochemical
neutralization
leveraging
advantage
HzOR
over
(OER)
terms
potentials;
2)
system
powered
direct
fuel
cell
(DHzFC),
realize
self‐powered
production.
These
novel
substantial
promise
energy‐saving
cost‐effective
from
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 18, 2024
Abstract
Hydrogen
energy
is
an
alternative
to
carbon‐based
fuels
due
its
zero
pollution
and
high
density.
The
electrolysis
of
water,
driven
by
triboelectric
nanogenerators
(TENGs),
considered
as
a
promising
green
method
for
hydrogen
production.
2D
transition
metal
carbides/nitrides
can
be
used
catalyst
carriers,
through
interface
engineering
prepare
molybdenum
disulfide/titanium
dioxide
(MoS
2
/Ti
3
C
)
composites
accelerating
the
kinetics
evolution
reaction
(HER).
In
this
work,
multilayered
rotating
TENG
(MR‐TENG)
designed
convert
mechanical
into
electrical
constructing
self‐powered
production
system.
MoS
are
utilized
electrodes
electrolyzing
which
enhance
catalytic
activity
in
HER.
output
performance
MR‐TENG
managed
charging
when
integrating
with
constant
voltage
power
management
module
investigated.
Besides
application
demonstrations
powering
digital
thermometer,
anemometer,
commercial
incandescent
lamp,
power‐managed
applied
generate
electricity
water
electrolysis,
realize
rate
7.1
mL
min
−1
at
rotation
speed
90
rpm.
This
work
provides
effective
approach
high‐purity
based
on
renewable
blue
utilization
important
industrial
prospects.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(52)
Published: Aug. 20, 2024
Abstract
Electrochemical
water
splitting
stands
out
as
a
highly
effective
and
environment‐friendly
strategy
for
generating
pure
hydrogen.
However,
the
expensive
catalyst
required,
low
efficiency
of
electrolysis,
are
still
concern.
Herein,
novel
Rh–CoSe
2
/CoSeO
3
nanocubes
heterostructure
is
designed
with
successful
robust
coupling
between
CoSe
CoSeO
,
employed
bifunctional
electrocatalyst
system.
The
interaction
enhances
metal–substrate
bonding
generates
anchor
sites
intermediate
species,
which
increases
electrocatalytic
mass
transport
kinetics,
offers
exceptional
stability.
water‐splitting
device
demonstrates
remarkable
performance,
voltage
1.62
V
at
current
density
20
mA
cm
−2
long‐lasting
durability
‐100
h.
This
study
opens
new
avenue
toward
creation
extremely
catalysts
to
be
used
an
industrial
scale
allow
alkaline
other
energy
conversion
devices.
promising
prospects
advancing
sustainable
technologies
positively
impacting
clean
future.
