High‐Entropy Metal Ammonium Phosphate Superstructure Nanocatalysts for Highly Efficient Water Oxidation and Methanol Oxidation
Small Methods,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 8, 2025
Abstract
Electrochemical
water
splitting
faces
a
major
challenge
due
to
the
sluggish
kinetics
of
oxygen
evolution
reaction
(OER).
This
study
proposes
an
innovative
strategy
replace
OER
with
thermodynamically
favorable
methanol
oxidation
(MOR)
while
producing
high‐value
formic
acid.
The
develops
novel
series
metallic
ammonium
phosphate
electrocatalysts
(NPOs·nH
2
O)
through
facile
chemical
precipitation
method,
including
high‐entropy
FeCoNiCuMn‐NPO·nH
O.
unique
superstructure
coupled
multi‐element
synergy
enables
abundant
active
site
exposure,
optimized
electronic
configuration,
and
enhanced
charge
transfer
capability.
Remarkably,
catalyst
demonstrates
exceptional
bi‐functional
performance:
achieving
ultralow
overpotentials
204/289
mV
at
10/100
mA
cm
−2
for
OER,
requiring
only
1.3
V
versus
RHE
deliver
10
in
MOR‐assisted
electrolysis.
Particularly,
it
exhibits
high
normalized
activity
(electrochemically
surface
area
activity:
16.6
,
mass
980
mg
−1
)
94%
Faradaic
efficiency
acid
production.
maintains
>120
h
stability
industrial‐level
current
density
(100
),
outperforming
most
reported
transition
metal‐based
electrocatalysts.
work
establishes
new
paradigm
designing
structural
engineering
composition
optimization,
providing
crucial
insights
sustainable
energy
conversion
biomass
valorization.
Язык: Английский
MOF‐Based Electrocatalysts for Water Electrolysis, Energy Storage, and Sensing: Progress and Insights
The Chemical Record,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 24, 2025
Abstract
Metal‐organic
frameworks
(MOFs)
and
their
derivatives
have
shown
broad
application
prospects
in
fields
such
as
water
electrolysis,
electrochemical
energy
storage,
sensing
due
to
high
specific
surface
area,
tunable
structures,
abundant
active
sites.
This
article
provides
a
comprehensive
overview
of
our
research
group′s
recent
advancements
developing
MOF‐based
electrocatalysts
for
Oxygen
Evolution
Reaction
(OER)
Urea
Oxidation
(UOR)
at
anodes,
well
Hydrogen
(HER)
cathodes
during
electrolysis.
Furthermore,
we
integrated
these
catalysts
into
practical
applications,
including
metal‐air
batteries,
lithium‐sulfur
non‐enzymatic
glucose
sensors.
To
further
demonstrate
the
innovative
contributions
work,
systematically
compare
it
with
advanced
work
by
other
groups.
Based
on
findings
performance
benchmarking
analyses,
identify
critical
challenges
that
must
be
addressed
advance
MOFs‐based
toward
next‐generation
conversion
sensing.
Язык: Английский
Superhydrophilic V‐Doped CoP Nanoparticles@Cu3P Nanotubes with Vacancy and Interface Engineering for Synergistically Enhanced Electrocatalytic Overall Water Splitting
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 29, 2025
Abstract
Synergistically
optimizing
electronic
structure
and
exposing
abundant
active
sites
to
significantly
improve
performance
of
transition
metal‐based
electrocatalysts
is
an
urgent
necessity
remains
a
significant
challenge.
Herein,
hybrid
nanotubes
array
rich
P‐vacancy
V‐CoP@Cu
3
P
in
situ
grown
on
copper
foam
(V
‐V‐CoP@Cu
HNTAs/CF)
fabricated
for
overall
water
splitting.
The
combined
experimental
theoretical
calculations
reveal
that
V
doping‐induced
vacancies
lead
the
formation
local
electric
field
within
V‐CoP
heterojunction‐induced
built‐in
field,
which
can
jointly
accelerate
electron
transfer
charge
separation,
thereby
enhancing
reaction
kinetics.
Moreover,
nanotube
not
only
increase
electrochemical
surface
area
offer
superior
mass
transfer,
but
also
possess
superhydrophilic
nature
utilization
efficiency
electrode
surfaces.
Due
these
advantages,
HNTAs/CF
provide
distinguished
HER
OER
activity,
by
employing
as
bifunctional
electrocatalysts,
splitting
device
delivered
current
density
10
mA
cm
−2
at
low
voltage
1.46
maintained
its
activity
without
decay
200
h
1
m
KOH
electrolyte.
Язык: Английский