Advanced Functional Materials,
Journal Year:
2020,
Volume and Issue:
30(47)
Published: May 8, 2020
Abstract
Developing
nano‐
or
atom‐scale
Pt‐based
electrocatalysts
for
hydrogen
evolution
reaction
(HER)
is
of
considerable
importance
to
mitigate
the
issues
associated
with
low
abundance
Pt.
Here,
a
protocol
constructing
hierarchical
Pt––MXene–single‐walled
carbon
nanotubes'
(SWCNTs)
heterostructure
HER
catalysts
presented.
In
heterostructure,
highly
active
nano/atom‐scale
metallic
Pt
immobilized
on
Ti
3
C
2
T
x
MXene
flakes
(MXene@Pt)
that
are
connected
conductive
SWCNTs'
network.
The
constructed
by
filtrating
mixed
colloidal
suspension
containing
MXene@Pt
and
SWCNTs.
Taking
advantages
hydrophilicity
reducibility
MXene,
prepared
spontaneously
reducing
cations
into
without
additional
reductants
post‐treatments.
so‐fabricated
catalysts,
in
form
membrane,
show
high
stability
during
800
h
operation,
volume
current
density
up
230
mA
cm
−3
at
−50
mV
versus
reversible
electrode
(RHE)
overpotential
−62
RHE
−10
−2
.
This
solution‐processed
strategy
offers
simple,
efficient,
yet
scalable
approach
construct
stable
efficient
catalysts.
Given
properties
structure–activity
relationships
Pt–MXene–SWCNTs'
other
MXenes
probably
greater
promise
electrocatalysis.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Aug. 6, 2022
Abstract
Designing
efficient
catalysts
and
understanding
the
underlying
mechanisms
for
anodic
nucleophile
electrooxidation
are
central
to
advancement
of
electrochemically-driven
technologies.
Here,
a
heterostructure
nickel
boride/nickel
catalyst
is
developed
enable
methanol
into
formate
with
Faradaic
efficiency
nearly
100%.
Operando
electrochemical
impedance
spectroscopy
in
situ
Raman
applied
understand
influence
concentration
oxidation
reaction.
High
concentrations
inhibit
phase
transition
electrocatalyst
high-valent
electro-oxidation
products,
electrophilic
oxygen
species
(O*
or
OH*)
formed
on
considered
be
catalytically
active
species.
Additional
mechanistic
investigation
density
functional
theory
calculations
reveals
that
potential-determining
step,
formation
*CH
2
O,
occurs
most
favorably
rather
than
boride
nickel.
These
results
highly
instructive
study
other
nucleophile-based
approaches
reactions
organic
electrosynthesis.
Energy & Environmental Science,
Journal Year:
2021,
Volume and Issue:
14(5), P. 2809 - 2858
Published: Jan. 1, 2021
Non-carbon
supported
SACs
were
classified
into
eight
categories
based
on
the
nature
of
their
substrates
for
first
time,
and
corresponding
anchoring
stabilization
mechanisms
have
been
systematically
summarized
discussed.
Small,
Journal Year:
2022,
Volume and Issue:
18(27)
Published: June 6, 2022
Abstract
Hydrogen,
a
new
energy
carrier
that
can
replace
traditional
fossil
fuels,
is
seen
as
one
of
the
most
promising
clean
sources.
The
use
renewable
electricity
to
drive
hydrogen
production
has
very
broad
prospects
for
addressing
and
environmental
problems.
Therefore,
many
researchers
favor
electrolytic
water
due
its
green
low‐cost
advantages.
reaction
comprises
oxygen
evolution
(OER)
(HER).
Understanding
OER
HER
mechanisms
in
acidic
alkaline
processes
contributes
further
studying
design
surface
regulation
catalysts.
catalysts
are
mainly
reviewed
defects,
doping,
alloying,
reconstruction,
crystal
structure,
heterostructures.
Besides,
recent
overall
splitting
also
reviewed.
Finally,
this
review
paves
way
rational
synthesis
materials
highly
efficient
electrocatalysis.
Advanced Energy Materials,
Journal Year:
2020,
Volume and Issue:
10(48)
Published: Nov. 10, 2020
Abstract
Rechargeable
zinc–air
batteries
(ZABs)
are
presently
attracting
a
lot
of
attention
for
electrical
energy
storage,
owing
to
their
low
manufacturing
cost
and
very
high
theoretical
specific
density.
Currently,
the
large‐scale
application
ZABs
is
hampered
by
sluggish
kinetics
oxygen‐reduction
reaction
(ORR)
oxygen
evolution
(OER),
which
underpin
battery
discharging
charging
processes,
respectively.
In
recent
years,
metal
single‐atom
catalysts
(SACs)
have
emerged
as
promising
candidates
driving
electrocatalysis
in
ZABs,
offering
both
electrocatalytic
activity
atom
utilization
through
unique
coordination
environments
(typically
porphyrin‐like
MN
x
species
on
N‐doped
carbon
supports).
Herein,
breakthroughs
design
SACs
ORR
OER
summarized,
with
general
view
towards
improving
ZAB
performance.
This
Review
begins
introducing
operating
principles
mechanisms
air
electrode,
after
various
types
SAC‐based
materials
developed
date
discussed.
Special
emphasis
placed
relationships
between
structure
SAC
active
site
Finally,
challenges
opportunities
practical
explored.
Advanced Science,
Journal Year:
2020,
Volume and Issue:
7(10)
Published: April 6, 2020
Abstract
Electrocatalytic
water
splitting
(2H
2
O
→
2H
+
)
is
a
very
promising
avenue
to
effectively
and
environmentally
friendly
produce
highly
pure
hydrogen
(H
oxygen
(O
at
large
scale.
Different
materials
have
been
developed
enhance
the
efficiency
for
splitting.
Among
them,
chalcogenides
with
unique
atomic
arrangement
high
electronic
transport
show
interesting
catalytic
properties
in
various
electrochemical
reactions,
such
as
evolution
reaction,
overall
splitting,
while
control
of
their
morphology
structure
vital
importance
performance.
Herein,
general
synthetic
methods
are
summarized
prepare
metal
different
strategies
designed
improve
performance
The
remaining
challenges
research
development
possible
directions
future
also
summarized.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(16), P. 5652 - 5683
Published: Jan. 1, 2023
This
review
scrutinizes
recent
progress
in
PEMWE
system
including
mechanisms,
the
correlation
among
structure-composition–performance,
manufacturing,
design
and
operation
protocols.
The
challenges
perspectives
for
applications
are
proposed.
Energy & Environmental Science,
Journal Year:
2021,
Volume and Issue:
14(6), P. 3455 - 3468
Published: Jan. 1, 2021
High-performance
3d–5d
transition
metal
single
atom
electrocatalysts
ligated
by
various
–NxCy
moieties
of
N-doped
graphene
are
investigated
for
hydrogen
evolution
and
oxygen
evolution/reduction
reactions
using
high-throughput
computational
screening
machine
learning.
