Fig. 4: Chemical composition and spatial structure of DGM-mediated interphase layer.
From: Dual-gradient metal layer for practicalizing high-energy lithium batteries
a, b FSI− adsorption models and corresponding adsorption energies of FSI−, DME and TTE molecule adsorption energy on different current collector (CC). c Raman spectra of localized high-concentration electrolytes (LHCE) electrolyte on different CC. d, e Atomic percentages of the element detected by the XPS measurements, see more details in Figs. S18 and S19. f, g XPS profiles of C 1 s and F 1 s spectra on different CC after 10th cycles at 3.0 V. h, i TOF-SIMS traces of the Cu and Cu-AgC+Ag electrodes after 10th cycles at 3.0 V. j, k Selected secondary-ion fragments of Cu and Cu-AgC+Ag electrode after 10th cycles detected by TOF-SIMs. The samples used for XPS and TOF-SIMs measurements were disassembled from NCM90 | |Cu based cells with an area capacity of 6.5 mAh cm−2 at discharged state (3.0 V).
