fig7

Figure 7. (A) Capacity-voltage profiles of NCM811/Si-C full cells with VC-containing electrolyte; Figure 7A is reprinted with permission from Ref.^[222]. Copyright © 2021 Springer Nature, under CC BY 4.0 license; (B) XRD patterns of Si anodes after first delithiation; Figure 7B is reprinted with permission from Ref.^[224]. Copyright © 2023 American Chemical Society; 3D TOF-SIMS sputtering images of typical secondary ion fragments under (C) 0.2 M-DTF and (D) 1 M-DTF; Figure 7C and D is reprinted with permission from Ref.^[235]. Copyright © 2025 Wiley. (E) In-depth XPS etching of Si electrodes with Base and 1% BTA electrolytes (Si 2p); Figure 7E is reprinted with permission from Ref.^[241]. Copyright © 2024 Wiley; (F) Chemical structures and molar ratios of LSCE; (G) Fluorinated additives containing fluoroalkyl sulfonyl fluoride or trifluorovinyl ether end-groups with a perfluoropolyether tether; Figure 7F and G is reprinted with permission from Ref.^[34]. Copyright © 2021 American Chemical Society. VC: Vinylene carbonate; FEC: fluoroethylene carbonate; BTA: bis(trimethylsilyl)trifluoroacetamide; LSCE: localized super concentrated electrolytes; LiFSI: lithium bis(fluorosulfonyl)imide; DME: dimethyl ether; TTE: 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether; SS: bis[2-(fluorosulfonyl)tetrafluoroethyl]ether; PS: 1,3-propane sultone; PP: hexafluoro-bis(trifluorovinyl)propane; PF: perfluoro-3,7-dioxaoct-1-ene; PFS: :perfluoro(4-methyl-3,6-dioxaoct-7-ene)-sulfonyl fluoride; PFP: perfluoro(5-methyl-3,6-dioxanon-1-ene); NCM811: lithium nickel cobalt manganese oxide (LiNi_0.8Co_0.1Mn_0.1O₂); XRD: X-ray diffraction; TOF-SIMS: time-of-flight secondary ion mass spectrometry; DTF: 2,2-difluoroethyl triflate; XPS: X-ray photoelectron spectroscopy.