Figure 5: Microstructure of nSi-cPAN and morphological effects of PYR13FSI IL on anode.
From: Stable silicon-ionic liquid interface for next-generation lithium-ion batteries
(a) EELS elemental mapping of carbon (cyan) and silicon (red) and (b) TEM micrograph of the pristine nSi-cPAN electrode reveal a thin, conformal coating of PAN on the nano-Si particles throughout the uncycled composite. (c,d) FESEM images of electrode cross-sections before (c) and after (d) initial lithiation showing an electrode volume expansion of only 17%. (e–h) TEM micrographs of fully lithiated (e,f) and 16th delithiated (g,h) nSi-cPAN electrodes showing no mechanical deficiencies or significant morphological changes.
