Fig. 2: Characterizations of starch-containing colloidal electrolytes.
From: Starch-mediated colloidal chemistry for highly reversible zinc-based polyiodide redox flow batteries
a Digital images of blank starch solution (1 M), blank polyiodide (Ix−) solution (0.01 M), and Ix− solution (0.01 M) with starch (0.1 M). b Viscosity, ionic conductivity, and Ix- permeability of 2 M ZnI2 electrolytes with different starch concentrations (0, 0.1, 0.2, 0.5, 1, 2, and 3 M). c Size distribution of the colloidal particles in blank starch solution and starch at 50% SOC, respectively. d Raman spectra of starch/polyiodide complex at different SOCs and e corresponding calculated ratio between I5− and I3− of blank 2 M ZnI2 and ZnI2 with 1 M starch at different SOCs (10%, 20%, 50%, 70%, 100%). f The evolution of bonding energy of I3− and I5− interacting with the soluble starch.
