Fig. 4: Electrochemical performance of the Zn-IS FBs at 50 °C.
From: Starch-mediated colloidal chemistry for highly reversible zinc-based polyiodide redox flow batteries
a CE, VE and EE of the Zn-IS FBs (2 ml of 2 M ZnI2 with 1 M starch || PP membrane || 8 ml of 2 M ZnCl2, 4 cm2 membrane area) under 7.5, 15, 22.5, 30, 37.5 and 7.5 mA cm−2 at high temperature (50 °C). b Voltage profiles of the Zn-IS FBs under 77.5, 15, 22.5, 30, and 37.5 mA cm−2. c The polarization of the Zn-IS FBs using PP membranes at high temperature (50 °C). d Cycling performances of Zn-IS FBs flow-cell system at high current density (30 mA cm−2) and high temperature (50 °C). e Cycling performances of Zn-IS FBs flow-cell system with/without starch at high volume capacity (35.5 Ah L−1) and high temperature (50 °C) under a current density of 22.5 mA cm−2. The inset in (d, e) are the corresponding voltage profiles.
