Energy & Fuels,
Journal Year:
2023,
Volume and Issue:
37(11), P. 7603 - 7633
Published: May 16, 2023
Electrocatalytic
water
splitting
to
hydrogen
(H2)
is
an
ideal
approach
generate
renewable
energy.
One
of
the
major
drawbacks
tightly
coupled
kinetically
sluggish
and
energy
inefficient
anodic
oxygen
evolution
reaction
(OER)
with
forming
a
cathodic
half-cell
which
leads
significant
reduction
in
overall
cell
efficiency.
In
this
context,
before
reviewing
literature,
we
have
first
briefly
analyzed
energetics
splitting,
problems,
challenges
under
different
pH
conditions
can
be
useful
for
further
understanding
process.
Replacement
OER
by
thermodynamically
favorable
substrate
oxidation
offers
flexibility,
value
addition,
efficiency
case
hybrid
or
assisted
electrolysis
afford
hydrogen.
Recent
progress
terms
sacrificial
oxidants
are
discussed
where
so
chosen
that
often
its
addition.
Also
here,
offered
insights
into
interface
designing
heterostructures
modulating
chemical
electronic
environments
enhancement
intrinsic
catalytic
activity
stability.
The
effect
incorporation
such
materials
reaction,
their
active
sites,
interactions
intermediates
thoroughly
explored.
This
review
good
complement
better
elucidation
role
future
commercial
applications.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Dec. 9, 2023
Abstract
The
broad
employment
of
clean
hydrogen
through
water
electrolysis
is
restricted
by
large
voltage
requirement
and
energy
consumption
because
the
sluggish
anodic
oxygen
evolution
reaction.
Here
we
demonstrate
a
novel
alternative
oxidation
reaction
green
electrosynthesis
valuable
3,3’-diamino-4,4’-azofurazan
energetic
materials
coupled
with
production.
Such
strategy
could
greatly
decrease
hazard
from
traditional
synthetic
condition
achieve
low-cell-voltage
production
on
WS
2
/Pt
single-atom/nanoparticle
catalyst.
assembled
two-electrode
electrolyzer
reach
10
100
mA
cm
–2
ultralow
cell
voltages
1.26
1.55
V
electricity
only
3.01
3.70
kWh
per
m
3
H
in
contrast
conventional
(~5
).
Density
functional
theory
calculations
combine
experimental
design
decipher
synergistic
effect
for
promoting
Volmer–Tafel
kinetic
rate
during
alkaline
reaction,
while
oxidative-coupling
starting
driven
free
radical
be
underlying
mechanism
synthesis
3,3’-diamino-4,4’-azofurazan.
This
work
provides
promising
avenue
concurrent
low-energy-consumption
ACS Applied Nano Materials,
Journal Year:
2023,
Volume and Issue:
6(7), P. 6066 - 6075
Published: April 1, 2023
Designing
effective
and
low-cost
bifunctional
electrocatalysts
for
the
alkaline
hydrogen
evolution
reaction
(HER)
oxygen
(OER)
is
essential
to
achieve
green
development
of
economy.
Herein,
we
have
developed
Mo-doped
Ni3S2
nanosheet
array
catalysts
with
excellent
electrochemical
properties.
Only
85
mV
230
overpotentials
are
required
under
conditions
at
10
mA
cm–2
remain
undegraded
100
h.
In
addition,
it
only
1.52
V
in
an
electrolyzer,
remained
unchanged
more
than
h
stability
tests,
outperforming
most
reported
electrocatalysts.
Experiments
density
functional
theory
(DFT)
calculations
confirmed
that
doping
Mo
could
expose
active
sites
optimize
adsorption
free
energy
intermediate,
which
turn
improves
its
intrinsic
activity.
This
work
reveals
key
role
electrocatalytic
performance
enhancement
atomic
scale.
Energy & Fuels,
Journal Year:
2023,
Volume and Issue:
37(11), P. 7603 - 7633
Published: May 16, 2023
Electrocatalytic
water
splitting
to
hydrogen
(H2)
is
an
ideal
approach
generate
renewable
energy.
One
of
the
major
drawbacks
tightly
coupled
kinetically
sluggish
and
energy
inefficient
anodic
oxygen
evolution
reaction
(OER)
with
forming
a
cathodic
half-cell
which
leads
significant
reduction
in
overall
cell
efficiency.
In
this
context,
before
reviewing
literature,
we
have
first
briefly
analyzed
energetics
splitting,
problems,
challenges
under
different
pH
conditions
can
be
useful
for
further
understanding
process.
Replacement
OER
by
thermodynamically
favorable
substrate
oxidation
offers
flexibility,
value
addition,
efficiency
case
hybrid
or
assisted
electrolysis
afford
hydrogen.
Recent
progress
terms
sacrificial
oxidants
are
discussed
where
so
chosen
that
often
its
addition.
Also
here,
offered
insights
into
interface
designing
heterostructures
modulating
chemical
electronic
environments
enhancement
intrinsic
catalytic
activity
stability.
The
effect
incorporation
such
materials
reaction,
their
active
sites,
interactions
intermediates
thoroughly
explored.
This
review
good
complement
better
elucidation
role
future
commercial
applications.
