Fig. 6: 19F spin density maps obtained from the vertical cell and changes in anion concentration at the electrode surfaces. | Nature Communications

Fig. 6: 19F spin density maps obtained from the vertical cell and changes in anion concentration at the electrode surfaces.

From: Operando magnetic resonance imaging for mapping of temperature and redox species in thermo-electrochemical cells

Fig. 6

a 19F spin density image of the gel electrolyte with no temperature gradient or load resistance, b after 740 min with thermal gradient applied but no load resistance connected and c after 1338 min with a 1 kΩ load resistance. In b and c, the cold electrode is on the left. d Time evolution of the 19F signal intensities at the surface of each electrode (average extracted from the four columns of pixels closest to each electrode, corresponding to a layer ~1.5-mm thick). The thermal gradient ΔT was switched on and the load resistances were applied at the times indicated by the dashed lines. Plots of cell current and voltage versus time for these experiments are provided in Supplementary Fig. 13.

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