fig6

From: Advancements in lithium solid polymer batteries: surface modification, in-situ/operando characterization, and simulation methodologies

Advancements in lithium solid polymer batteries: surface modification, <i>in-situ</i>/operando characterization, and simulation methodologies

Figure 6. (A) A diagram of a Li-Li symmetric cell under SRS imaging. (B) A picture of a Li-Li symmetric cell (top) and a magnified microscope view (bottom) scale: 100 μm. (C) The SRS spectrum displays the characteristics of 0.5 M LiBOB in a TEGDME/PVDF-HFP gel electrolyte. The inset shows that as the LiBOB concentration increases from 0 to 0.5 M, the Raman intensity at 1,830 cm^-1 (dashed circle) increases linearly with concentration. (D) 3D images reveal ion depletion near the lithium surface at 4.2 mA cm^-2 current density. (E) The average Li⁺ concentration 5 μm from the Li surface along with a.c voltage profile of a Li/Li symmetric cell at 1.3 mA cm^-2. Reproduced with permission from Ref.^[57] Copyright 2018, Nature.