Beilstein Journal of Organic Chemistry,
Год журнала:
2024,
Номер
20, С. 1623 - 1634
Опубликована: Июль 17, 2024
A
new
paradigm
for
energy
is
underway
demanding
decarbonized
systems.
Some
of
them
rely
on
emerging
electrochemical
devices,
crucial
in
hydrogen
technologies,
including
fuel
cells,
CO
2
and
water
electrolysers,
whose
applications
performances
depend
key
components
such
as
their
separators/ion-exchange
membranes.
The
most
studied
already
commercialized
Nafion
membrane
shows
great
chemical
stability,
but
its
content
limits
high
proton
conduction
to
a
limited
range
operating
temperatures.
Here,
we
report
the
synthesis
series
triazinephosphonate
derivatives
use
dopants
preparation
modified
were
prepared
by
substitution
chlorine
atoms
cyanuric
chloride.
Diverse
conditions
used
obtain
trisubstituted
(4-hydroxyphenyl)triazinephosphonate
(4-aminophenyl)triazinephosphonate
derivatives,
with
these
amino
counterparts,
only
disubstituted
compounds
obtained.
membranes
casting
incorporation
synthesized
1,3,5-triazinephosphonate
(TPs)
derivatives.
evaluation
properties
relative
humidity
(RH)
at
60
°C,
showed
that
they
present
higher
conductivities
than
similar
or
better
commercial
N115,
same
experimental
conditions.
Nafion-doped
compound
TP2
1.0
wt
%
loading
highest
conductivity
84
mS·cm
−1
.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(3), С. 3270 - 3278
Опубликована: Янв. 12, 2024
The
inferior
intrinsic
performance
of
Ni-based
catalysts
for
the
hydrogen
oxidation
reaction
(HOR)
in
an
alkaline
medium
seriously
restricts
utilization
emerging
anion-exchange
membrane
fuel
cells
(AEMFCs).
This
is
because
and
hydroxyl
binding
energies
on
Ni
need
to
be
optimized.
Although
electrocatalysts
obtained
by
alloying
with
Mo
or
W
reportedly
exhibit
enhanced
activity,
they
are
still
far
from
industrial
requirements
based
unbalanced
HBE
OHBE.
Herein,
we
report
further
enhance
HOR
activity
constructing
a
heterostructure
between
NiW
alloy
metal
oxide
(Ni17W3/WO2),
which
synthesized
through
solvothermal
treatment
combined
annealing.
as-fabricated
reduced
graphene
(rGO)-supported
Ni17W3/WO2
(Ni17W3/WO2/rGO)
exhibits
state-of-the-art
catalytic
(current
density
2.9
mA
cm–2
at
0.1
V
vs
RHE),
faster
kinetics
(geometric
current
4.0
that
can
comparable
Pt/C),
high
stability
(maintaining
more
than
80
h)
toward
media.
detailed
characterizations
reveal
charge
transfer
across
boundary
arising
as-prepared
tunes
electronic
structures,
ultimately
facilitating
process.
Chemical Communications,
Год журнала:
2024,
Номер
60(56), С. 7113 - 7123
Опубликована: Янв. 1, 2024
The
progress
of
proton
exchange
membrane
fuel
cells
(PEMFCs)
in
the
clean
energy
sector
is
notable
for
its
efficiency
and
eco-friendliness,
although
challenges
remain
terms
durability,
cost
power
density.
