Extended Data Fig. 8: Measuring 3O2 yields and disproportionation kinetics.
From: Marcus kinetics control singlet and triplet oxygen evolving from superoxide
a, Schematic set-up of the sample vial used for mass spectrometry and sequence of the solution addition during the 3O2 yield measurement. b, O2 evolution versus time upon immersing KO2 powder in RMox solution. The example shown is with DMPZ. c, Schematic of the set-up to measure disproportionation kinetics by pressure changes. d, Pressure evolution from three different cases where Li+/(Li++TBA+) mole fractions are 1, 0.33 and 0.166. e, Evolved moles versus time for superoxide disproportionation as measured by the pressure p. Fitting is done with p(t) = p0 + Δp(1–exp(–kt)). The example is shown for the case with the mole fraction Li+/(Li++TBA+) = 0.166. Panel a adapted with permission from ref. 64, American Chemical Society.
