Design
and fabrication of bifunctional efficient and durable noble-metal-free
electrocatalyst for hydrogen and oxygen evolution is highly desirable
and challenging for overall water splitting. Herein, a novel hybrid
nanostructure with Ni2P/CoP nanoparticles decorated on
a porous N-doped fullerene nanorod (p-NFNR@Ni–Co–P)
was developed as a bifunctional electrocatalyst. Benefiting from the
electric current collector (ECC) effect of FNR for the active Ni2P/CoP nanoparticles, the p-NFNR@Ni–Co–P exhibited
outstanding electrocatalytic performance for overall water splitting
in alkaline medium. To deliver a current density of 10 mA cm–2, the electrolytic cell assembled by p-NFNR@Ni–Co–P
merely required a potential as low as 1.62 V, superior to the benchmark
noble-metal-based electrocatalyst. Experimental and theoretical results
demonstrated that the surface engineered FNR serving as an ECC played
a critical role in accelerating the charge transfer during the electrocatalytic
reaction. The present work paves the way for fullerene nanostructures
in the realm of energy conversion and storage.
Rational design and construction of noble-metal-free electrocatalyst with high activity and robust durability for oxygen evolution reaction (OER) have aroused immense interests in the past decades, but challenge remains. Herein,...
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