EcoEnergy,
Journal Year:
2023,
Volume and Issue:
1(2), P. 344 - 374
Published: Dec. 1, 2023
Abstract
Extensive
consumption
of
limited
fossil
fuel
resources
generates
serious
environmental
problems,
such
as
release
large
amounts
the
greenhouse
gas
CO
2
.
It
is,
therefore,
urgently
necessary
to
look
for
alternative
energy
meet
increasing
demands.
Hydrogen
is
a
clean,
environmentally
friendly,
and
sustainable
source.
Electrochemical
water
splitting
one
cleanest
greenest
technologies
available
hydrogen
production.
Unfortunately,
large‐scale
electrolysis
hindered
by
high
costs
catalysts,
since
noble
metal‐based
materials
have
been
demonstrated
be
best
catalysts
(e.g.,
Pt
cathode
Ru/Ir‐oxide
anode
catalyst).
Recently,
transition
metal
carbides
(TMCs)
drawn
significant
attention
use
in
electrochemical
splitting,
especially
evolution
reactions,
owing
their
intrinsic
catalytic
activities,
extraordinary
electrical
conductivities,
abundant
source
materials.
TMCs
exhibit
Pt‐like
electronic
structures
are
considered
suitable
alternatives
Pt.
This
review
systematically
summarizes
recent
advances
uses
representative
oxygen
reactions
highlights
advantages
electrocatalytic
effects
provided
nanostructuring.
Finally,
existing
challenges
future
perspectives
these
electrocatalysts
discussed.
Nanoscale,
Journal Year:
2023,
Volume and Issue:
15(28), P. 11777 - 11800
Published: Jan. 1, 2023
Transition
metal
nitrides
(TMNs)
have
become
usable
substitutes
for
precious
metals
such
as
Pt
and
Ir
in
the
field
of
electrocatalysis
because
their
high
electrocatalytic
performance,
conductivity,
good
corrosion
resistance
stability.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(15)
Published: Feb. 13, 2024
Abstract
With
the
oxygen
conversion
efficiency
of
metal‐free
carbon‐based
fuel
cells
dramatically
improved,
building
blocks
covalent
organic
frameworks
(COFs)
raised
principal
concerns
on
catalytic
active
sites
with
indistinct
electronic
states.
Herein,
to
address
this
issue,
we
demonstrate
COFs
for
reduction
reaction
(ORR)
by
regulating
edge‐hanging
thiophene
units,
and
molecular
geometries
are
further
modulated
via
positional
isomerization
strategy,
affording
isomeric
COF‐α
2‐substitution
COF‐β
3‐substitution
frameworks.
The
states
intermediate
adsorption
ability
well‐regulated
through
geometric
modification,
resulting
in
controllable
chemical
activity
local
density
π‐electrons.
Notably,
introduction
units
different
substitution
positions
into
a
pristine
pure
COF
model
COF‐Ph
achieves
excellent
half‐wave
potential
0.76
V
versus
reversible
hydrogen
electrode,
which
is
higher
than
most
those
or
metal‐based
electrocatalysts.
Utilizing
combination
theoretical
prediction
situ
Raman
spectra,
show
that
skeleton
(
)
can
induce
dangling
unit
activation,
accurately
identifying
pentacyclic‐carbon
(thiophene
α‐position)
adjacent
sulfur
atom
as
sites.
results
suggest
groups
suitable
ORR
promising
geometry
construction.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(28)
Published: May 9, 2024
The
single-atom
Fe-N-C
catalyst
has
shown
great
promise
for
the
oxygen
reduction
reaction
(ORR),
yet
intrinsic
activity
is
not
satisfactory.
There
a
pressing
need
to
gain
deeper
understanding
of
charge
configuration
and
develop
rational
modulation
strategies.
Herein,
we
have
prepared
Fe
with
co-coordination
N
O
(denoted
as
Fe-N/O-C)
adjacent
defect,
proposing
strategy
optimize
d-orbital
spin-electron
filling
sites
by
fine-tuning
first
coordination
shell.
Fe-N/O-C
exhibits
significantly
better
ORR
compared
its
counterpart
commercial
Pt/C,
much
more
positive
half-wave
potential
(0.927
V)
higher
kinetic
current
density.
Moreover,
using
catalyst,
Zn-air
battery
proton
exchange
membrane
fuel
cell
achieve
peak
power
densities
up
490
1179
mW
cm
eScience,
Journal Year:
2024,
Volume and Issue:
unknown, P. 100264 - 100264
Published: March 1, 2024
Building
highly
reactive
electrocatalysts
is
of
great
significance
for
addressing
the
energy
crisis
and
developing
green
energy.
Electrocatalytic
reactions
occur
at
interface
catalysts,
where
physicochemical
properties
catalyst
surface
play
a
dominant
role.
In
particular,
electron
spin
behavior
on
has
decisive
impact
catalytic
reaction
process.
This
review
initially
introduces
definition
methods
manipulation.
Furthermore,
we
summarize
advanced
characterization
spin.
Then,
latest
research
advancements
effect
in
oxygen
reduction
reaction,
evolution
carbon
dioxide
nitrogen
reaction.
The
mechanisms
manipulation
these
four
are
thoroughly
discussed.
Finally,
propose
key
directions
future
development
effects
field
electrocatalysis.
contributes
to
deeper
understanding
micromechanisms
electrocatalytic
reactions.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 1, 2024
Abstract
An
urgent
challenge
to
the
development
of
rechargeable
Zn–air
batteries
(RZABs)
is
highly
active,
durable,
and
low‐cost
catalysts
for
oxygen
reduction
reaction
evolution
(ORR
OER).
Herein,
a
carbon‐based
monolithic
catalyst
designed
via
anchoring
P‐modified
MnCo
2
O
4
inverse
spinel
nanoparticles
on
biomass‐derived
carbon
(P‐MnCo
@PWC).
The
introduction
surface
P
atoms
regulates
electronic
structures
valences
metal
by
adjusting
coordination
fields
(P‐O)
δ–
Metal‐P.
optimization
adsorption
behavior
key
intermediates
facilitates
activation
conversion
species.
structure
beneficial
construction
three‐phase
interface
efficient
mass
transfer
high
electrical
conductivity.
P‐MnCo
@PWC
displays
outstanding
bifunctional
catalytic
properties
with
thin
Δ
E
(the
difference
between
OER
potential
at
10
mA
cm
–
ORR
halfwave
potential)
0.66
V.
RZAB
as
cathode
delivers
an
exceptional
peak
power
density
(160
mW
)
remarkable
cycle
life
(over
1200
cycles),
overcoming
those
noble
counterparts.
This
research
provides
promising
general
surface‐phosphorization
way
design
electrocatalysts
high‐value
utilization
biomass.
