Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(22), P. 15053 - 15060
Published: May 22, 2024
Electrocatalysis
is
considered
promising
in
renewable
energy
conversion
and
storage,
yet
numerous
efforts
rely
on
catalyst
design
to
advance
catalytic
activity.
Herein,
a
hydrodynamic
single-particle
electrocatalysis
methodology
developed
by
integrating
collision
electrochemistry
microfluidics
improve
the
activity
of
an
system.
As
proof-of-concept,
hydrogen
evolution
reaction
(HER)
electrocatalyzed
individual
palladium
nanoparticles
(Pd
NPs),
with
development
microchannel-based
ultramicroelectrodes.
The
controlled
laminar
flow
enables
precise
delivery
Pd
NPs
electrode–electrolyte
interface
one
one.
Compared
diffusion
condition,
improves
number
active
sites
given
electrode
2
orders
magnitude.
Furthermore,
forced
convection
enhancement
proton
mass
transport,
thereby
increasing
electrocatalytic
each
single
NP.
It
turns
out
that
improvement
transport
increases
rate
HER
at
NPs,
thus
phase
transition
without
requiring
high
overpotential.
This
study
provides
new
avenues
for
enhancing
altering
operating
conditions,
beyond
material
limitations.
Small,
Journal Year:
2023,
Volume and Issue:
20(14)
Published: Nov. 21, 2023
Abstract
Developing
abundant
Earth‐element
and
high‐efficient
electrocatalysts
for
hydrogen
production
is
crucial
in
effectively
reducing
the
cost
of
green
production.
Herein,
a
strategy
by
comprehensively
considering
computational
chemical
indicators
H*
adsorption/desorption
dehydrogenation
kinetics
to
evaluate
evolution
performance
proposed.
Guided
proposed
strategy,
series
catalysts
are
constructed
through
dual
transition
metal
doping
strategy.
Density
Functional
Theory
(DFT)
calculations
experimental
chemistry
demonstrate
that
cobalt‐vanadium
co‐doped
Ni
3
N
an
exceptionally
ideal
catalyst
from
electrolyzed
alkaline
water.
Specifically,
Co,V‐Ni
requires
only
10
41
mV
electrolytes
seawater,
respectively,
achieve
current
density
mA
cm
−2
.
Moreover,
it
can
operate
steadily
at
large
industrial
500
extended
periods.
Importantly,
this
evaluation
single‐metal‐doped
found
still
exhibits
significant
universality.
This
study
not
presents
efficient
non‐precious
metal‐based
electrocatalyst
water/seawater
electrolysis
but
also
provides
design
high‐performance
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(73), P. 9918 - 9929
Published: Jan. 1, 2024
This
article
summarizes
small-sized
transition
metal
oxide
(TMO)
clusters
for
electrocatalysis.
The
synergistic
actions
between
TMO
and
TM–N
x
sites
mechanisms
by
DFT
studies
are
comprehensively
highlighted.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(22), P. 15053 - 15060
Published: May 22, 2024
Electrocatalysis
is
considered
promising
in
renewable
energy
conversion
and
storage,
yet
numerous
efforts
rely
on
catalyst
design
to
advance
catalytic
activity.
Herein,
a
hydrodynamic
single-particle
electrocatalysis
methodology
developed
by
integrating
collision
electrochemistry
microfluidics
improve
the
activity
of
an
system.
As
proof-of-concept,
hydrogen
evolution
reaction
(HER)
electrocatalyzed
individual
palladium
nanoparticles
(Pd
NPs),
with
development
microchannel-based
ultramicroelectrodes.
The
controlled
laminar
flow
enables
precise
delivery
Pd
NPs
electrode–electrolyte
interface
one
one.
Compared
diffusion
condition,
improves
number
active
sites
given
electrode
2
orders
magnitude.
Furthermore,
forced
convection
enhancement
proton
mass
transport,
thereby
increasing
electrocatalytic
each
single
NP.
It
turns
out
that
improvement
transport
increases
rate
HER
at
NPs,
thus
phase
transition
without
requiring
high
overpotential.
This
study
provides
new
avenues
for
enhancing
altering
operating
conditions,
beyond
material
limitations.
