Zeitschrift für anorganische und allgemeine Chemie,
Journal Year:
2024,
Volume and Issue:
650(11-12)
Published: May 8, 2024
Abstract
Curing
agents
for
epoxy
resin
(EP)
are
one
of
the
most
important
branches
in
polymer
materials
field
due
to
their
enormous
potential
many
fields,
but
constructing
them
a
well‐controlled
curing
temperature
remains
challenging.
Herein,
novel
agent
is
constructed
by
zirconium
metal‐organic
framework
(UiO‐66)
and
[P
4442
]
2
[IDA]
through
an
impregnation
method.
[IDA]@UiO‐66
utilized
as
functional
nanofiller
construct
[IDA]@UiO‐66/EP
nanocomposites.
The
chemical
structures
were
investigated
XRD,
SEM,
DSC,
TG
characterizations.
various
with
different
loading
amounts
used
investigate
behaviors
EP‐51.
DSC
results
confirm
that
higher
than
[IDA]/EP.
In
addition,
kinetic
parameters
activation
energy
reaction
acquired
according
fitting
Kissinger
equation
Ozawa
equation.
drying
time
system
at
40
°C
was
enhanced
17
times
compare
[IDA]/EP
system.
This
study
opens
new
avenues
rational
design
EP
nanocomposites
employing
ionic
liquids@MOFs
composite
wide
engineering
applications.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(7), P. 8885 - 8894
Published: Feb. 8, 2024
The
solid-state
zinc-air
batteries
have
attracted
extensive
attention
due
to
their
high
theoretical
energy
density,
safety,
and
the
compact
structure.
In
this
work,
a
novel
hydrogel
electrolyte
was
developed
that
equipped
with
an
interpenetrating
network
of
zinc
polyacrylate
(PAZn)
polyacrylamide
(PAM).
At
same
time,
cyclodextrin
derivative
sulfonate
groups
introduced
as
additive.
From
design
anionic
in
network,
effective
stable
channels
for
species
been
established.
unique
structure
additives
regulates
uniform
deposition
zinc.
After
using
electrolyte,
cycle
lifetime
assembled
significantly
extended.
byproducts
were
greatly
suppressed
generated
smooth
electrode
surface
after
charge–discharge
cycling.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(4), P. 2138 - 2147
Published: Jan. 18, 2024
Expediting
the
torpid
kinetics
of
oxygen
reduction
reaction
(ORR)
at
cathode
with
minimal
amounts
Pt
under
acidic
conditions
plays
a
significant
role
in
development
proton
exchange
membrane
fuel
cells
(PEMFCs).
Herein,
novel
Pt–N–C
system
consisting
single
atoms
and
nanoparticles
anchored
onto
defective
carbon
nanofibers
is
proposed
as
highly
active
ORR
catalyst
(denoted
Pt–N–C).
Detailed
characterizations
together
theoretical
simulations
illustrate
that
strong
coupling
effect
between
different
sites
can
enrich
electron
density
sites,
modify
d-band
electronic
environments,
optimize
intermediate
adsorption
energies,
ultimately
leading
to
significantly
enhanced
performance.
Specifically,
as-designed
demonstrates
exceptional
properties
high
half-wave
potential
0.84
V.
Moreover,
mass
activity
reaches
193.8
mA
gPt–1
0.9
V
versus
RHE,
which
8-fold
greater
than
Pt/C,
highlighting
enormously
improved
electrochemical
properties.
More
impressively,
when
integrated
into
electrode
assembly
an
air-fed
PEMFC,
achieved
higher
maximum
power
(655.1
mW
cm–2)
compared
Pt/C-based
batteries
(376.25
cm–2),
hinting
practical
application
PEMFCs.
