Fig. 2: Electrochemical performance and structure characterizations of Zn-Cu anode in aqueous Zn batteries. | Nature Communications

Fig. 2: Electrochemical performance and structure characterizations of Zn-Cu anode in aqueous Zn batteries.

From: Three-dimensional Zn-based alloys for dendrite-free aqueous Zn battery in dual-cation electrolytes

Fig. 2: Electrochemical performance and structure characterizations of Zn-Cu anode in aqueous Zn batteries.

a Nucleation overpotentials of Zn-Cu and Zn asymmetric cells (vs. Cu electrode) at a current density of 5.0 mA cm−2. b Electrochemical impedance spectroscopy (EIS) of Zn//Zn and Zn-Cu//Zn-Cu cells. c Long-term stability of Zn//Zn and Zn-Cu//Zn-Cu cells at a current density of 1.0 mA cm−2. Long-term stability of Zn-Cu//MnO2 batteries in (d) dual-cation (Mg2++Zn2+) electrolyte at 5 C and in (e, f) dual-cation (Na++Zn2+) electrolyte at 10 C and 20 C, respectively. STEM images of (g–i) Mg-Zn5Cu (Scale bar: 1.0 nm) and (j, k) Na-Zn5Cu (Scale bar: 2.0 nm) after 100 cycles.

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