Abstract
The design and fabrication of sustainable and efficient electrocatalyst for water splitting are crucial for rechargeable metal-air batteries and regenerative fuel cells. In this report, a highly stable and active NiCo-selenide electrocatalyst was successfully prepared by a facile two-step solvothermal approach. In 0.1 M KOH alkaline electrolyte solution, the novel NiCo-selenide electrocatalyst afforded the current density of 10 mA cm−2 at a lower overpotential of 393 mV, a smaller Tafel slope of ~89 mV dec−1 and better stability, compared with NiCo-based oxide and sulfide.
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