fig4

Figure 4. Cycling behavior of symmetric Zn//Zn cells in pristine and additive-containing ZnSO₄ electrolytes at (A) 1, (B) 2, and (C) 4 mA cm^-2; (D) The rate performance of the cells over 1-5 mA cm^-2; (E) Coulombic efficiency and (F) the corresponding initial potential-capacity curves of Ti//Zn cells with and without ARS at 1.0 mA cm^-2. ARS: Alizarin red S; SBS: sodium benzenesulfonate; PHS: sodium p-hydroxybenzenesulfonate.