Flower-like NiCo2O4 spinel microspheres for efficient chlorine evolution under neutral conditions

Dimensional stability anodes (DSA), constructed using noble metal oxides like RuO 2 and IrO 2 , is widely used in industrial chlorine production. The DSA electrode demonstrates exceptional chlorine evolution capabilities in acidic solutions and high-chloride concentrations. However, under neutral conditions, its chlorine evolution efficiency diminishes significantly. In this paper, a low-cost, high-efficiency 3D flower-like NiCo 2 O 4 catalyst was fabricated that exhibits high catalytic activity in neutral sodium chloride solutions. The 3D flower-like NiCo 2 O 4 catalyst exhibits good chlorine evolution efficiency, achieving 90 % at 30 mA/cm 2 in NaCl solutions. Furthermore, it's chlorine evolution efficiency of the electrocatalyst surpasses that of commercial DSA electrode at various current densities, making it a highly promising candidate for electrocatalytic applications.