1 research outputs found
Amorphous Metal–Organic Framework-Derived Electrocatalyst to Boost Water Oxidation
Amorphous metal–organic framework
(MOF) materials have drawn
extensive interest in the design of high-performance electrocatalysts
for use in the electrochemical oxygen evolution reaction. However,
there are limitations to the utilization of amorphous MOFs due to
their low electrical conductivity and unsatisfactory stability. Herein,
a novel amorphous–crystalline (AC) heterostructure is successfully
constructed by synthesizing a crystalline metal sulfide (MS)-embedded
amorphous Ni0.67Fe0.33-MOF, namely an MS/Ni0.67Fe0.33-MOF. It exhibits excellent catalytic
performance (a low overpotential of 248 mV at 10 mA cm–2 with a small Tafel slope of 50 mV decade–1), durability,
and stability (only 8% degradation of the current density at a constant
voltage after 24 h). This work thus sheds light on the engineering
of highly efficient catalysts with AC heterointerfaces for optimizing
water-splitting systems