1 research outputs found
Facile Synthesis of Mesoporous and Thin-Walled Ni–Co Sulfide Nanotubes as Efficient Electrocatalysts for Oxygen Evolution Reaction
Development of high-performance and
inexpensive electrocatalysts
for oxygen evolution reaction (OER) is of important significance for
sustainable energy conversion technologies. In this work, mesoporous
Co and Ni–Co sulfide nanotubes with ultrathin nanowalls are
designed and fabricated by a facile and template-free solvothermal
method. The obtained CoS<sub>1.097</sub> nanotubes can be used as
an OER electrocatalyst, and the incorporation of Ni into the CoS<sub>1.097</sub> lattice could further enhance the catalytic activity
of the catalysts. The best-performing Ni<sub>0.13</sub>ÂCo<sub>0.87</sub>S<sub>1.097</sub> nanotubes exhibit high performance for
OER with a small overpotential of 316 mV to achieve a current density
of 10 mA cm<sup>–2</sup> and excellent stability, which outperform
those of commercial IrO<sub>2</sub> and most of the studied Co-based
OER catalysts. Our work demonstrates a new strategy to design highly
efficient non-previous-metal OER electrocatalysts with unique structures
and can be extended to other transition-metal-based systems