Enhanced Capacitive Desalination Performance of Porous Carbon Spheres@MnO₂Composite

A porous carbon spheres@MnO₂composite is prepared and used as the electrosorption electrode. The MnO₂nanoparticles are evenly distributed on the porous carbon spheres. The as-prepared composite possesses high specific surface area of 258.6 m²•g⁻¹. Its electrochemical evaluations confirm that the composite has high specific capacitance of 175 F•g⁻¹at a current density of 1 A•g⁻¹in 0.5 mol•L⁻¹NaCl aqueous solution, and shows good conductivity and excellent cycling performance. Electrosorption capacity for the porous carbon spheres@MnO₂composite is 6.28 mg•g⁻¹. Moreover, the composite electrode exhibits excellent recyclability with an efficient regeneration process.