1 research outputs found
Alternating Magnetic Field Induced Magnetic Heating in Ferromagnetic Cobalt Single-Atom Catalysts for Efficient Oxygen Evolution Reaction
Alternating magnetic field (AMF) is a promising methodology
for
further improving magnetic single-atom catalyst (SAC) activity toward
oxygen evolution reaction (OER). Herein, the anchoring of Co single
atoms on MoS2 support (Co@MoS2), leading to
the appearance of in-plane room-temperature ferromagnetic properties,
is favorable for the parallel spin arrangement of oxygen atoms when
a magnetic field is applied. Moreover, field-assisted electrocatalytic
experiments confirmed that the spin direction of Co@MoS2 is changing with the applied magnetic field. On this basis, under
AMF, the active sites in ferromagnetic Co@MoS2 were heated
by exploiting the magnetic heating generated from spin polarization
flip of these SACs to further expedite OER efficiency, with overpotential
at 10 mA cm–2 reduced from 317 mV to 250 mV. This
work introduces a feasible and efficient approach to enhance the OER
performance of Co@MoS2 by AMF, shedding some light on the
further development of magnetic SACs for energy conversion