Fig. 2: Dependence of Al plating/stripping behaviors of eutectic Al-Cu alloys on oxygen concentrations.
From: Aluminum-copper alloy anode materials for high-energy aqueous aluminum batteries
a, b Al stripping/plating voltage profiles of E-Al82Cu18 (pink line), Al2Cu (blue line), and pure Al (green line) electrodes in their as-assembled symmetric cells in 2 M Al(OTF)3 aqueous electrolyte with CO2 = 13.6 (a) and 0.13 mg L−1 (b), which are purged by O2 and N2 for 2 h, respectively. Current density: 0.5 mA cm−2. c, d EIS spectra of as-assembled E-Al82Cu18, Al2Cu, and pure Al symmetric cells in 2 M Al(OTF)3 aqueous electrolyte with CO2 = 13.6 (c) and 0.13 mg L−1 (d). The symbols are the raw data of E-Al82Cu18 (pink spheres), Al2Cu (blue diamonds), and pure Al (green squares) symmetric cells while the lines represent the fit data of E-Al82Cu18 (pink line) and Al2Cu (blue line).
