Journal of the American Ceramic Society,
Journal Year:
2024,
Volume and Issue:
107(6), P. 4027 - 4041
Published: Jan. 29, 2024
Abstract
Electrocatalytic
water
splitting
is
an
essential
hydrogen
production
method
for
resolving
present
energy
shortage
and
progress
toward
more
efficient
technologies.
For
this
purpose,
a
versatile
cheap
electrocatalysts
are
the
main
challenge
along
way.
In
report,
we
synthesized
vanadium
telluride
carbon
nanotube
(VTe–CNT)‐based
nanocomposite
via
facile
hydrothermal
route.
The
VTe–CNTs
characterized
by
X‐ray
diffraction
analysis,
scanning
electron
microscopy,
energy‐dispersive
spectroscopy,
Fourier
transform
infrared
Brunauer–Emmett–Teller.
These
characterizations
depict
nanosphere
structures,
morphology,
high
surface
area
that
maintains
porosity,
which
inclusive
water‐splitting
phenomena
in
1.0
M
solution
of
KOH.
Additionally,
electrochemical
performance
has
shown
best
O
2
evolution
reactions
activity
with
onset
potential
1.42
V
versus
reversible
electrode
required
10
mA/cm
current
density
at
278
mV
overpotential,
excellent
among
other
electrocatalysts,
VTe
(342
mV@10
−2
)
CNTs
(365
mV@10mA/cm
).
Moreover,
VTe–CNT
exhibits
remarkable
stability
almost
20
h.
It
also
requires
low
0.05
small
Tafel
slope
47
mV/dec
H
reactions.
Hence,
research
might
facilitate
easy
transportation
electrons
open
up
new
era,
serving
as
replacement
noble
metal–derived
materials.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(8)
Published: Nov. 10, 2023
Abstract
Realizing
efficient
electrocatalysts
is
a
stepping
stone
toward
achieving
high‐performance
alkaline
water/seawater
electrolysis,
but
remains
crucial
challenge.
Herein,
heterogeneous
Mo
2
N/Ni
3
N
on
nickel
foam
(denoted
MN‐NMN/NF)
that
stable
and
active
for
the
hydrogen
evolution
reaction
(HER)
in
both
are
demonstrated.
The
optimized
MN‐NMN09/NF
achieves
an
ultralow
HER
overpotential
of
11
mV@10
mA
cm
−2
1.0
m
KOH
electrolyte,
which
not
only
superior
to
benchmark
Pt/C
catalysts
also
best
reported
ever
among
NiMo‐based
environment.
Successively,
electrocatalyst
can
drive
current
densities
10
500
using
low
overpotentials
9.37
123
mV
seawater
durable
after
120
h
long‐term
electrolysis
at
constant
density
.
In
situ
Raman
analysis
reveals
enhanced
performance
attributed
accelerated
H
O
adsorption
OH
dissociation
processes
MN‐NMN
surfaces.
Theoretical
further
confirms
rapid
adsorption‐dissociation
kinetics
adsorption‐conversion
Ni
N/NiOOH
N/MoO
x
surfaces
result
boosted
capability.
This
work
depicts
significant
potential
designing
production
water
electrolysis.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 25, 2024
Electrocatalytic
nitrate
reduction
to
ammonia
holds
great
promise
for
developing
green
technologies
electrochemical
energy
conversion
and
storage.
Considering
that
real
resources
often
exhibit
low
concentrations,
it
is
challenging
achieve
high
activity
in
low-concentration
solutions
due
the
competing
reaction
of
hydrogen
evolution
reaction,
let
alone
considering
catalyst
lifetime.
Herein,
we
present
a
performance
electrocatalyst
based
on
Co
nanosheet
structure
with
gradient
dispersion
Ru,
which
yields
NH
