fig4

Figure 4. Conductive polymer surface modification for lithium oxide cathode materials. (A) PI coating layers with different thicknesses and their effect on interfacial side reactions and ion transport. Reproduced from Ref.^[118] with permission from Elsevier. (B) Schematic of specific synthesis of NCM@PPC and improved cycling stability. Reproduced from Ref.^[121] with permission from Elsevier. (C) Comparison of surface film and charge-transfer resistance evolution during cycling. Diffusion coefficients calculated from GITT curves during (D) delithiation and (E) lithiation process. Reproduced from Ref.^[124] with permission from the American Chemical Society. PI(0.3)-LCO, PI(0.5)-LCO and PI(1.0)-LCO: LCO with 0.3, 0.5 and 1.0 wt.% coating solutions, respectively; NCM₈₁₁@PANI: PANI-modified NCM811; NCM₈₁₁@PANI-PVP: PANI and PVP-modified NCM811; R_sf: surface film resistance; R_ct: charge-transfer resistance; GITT: galvanostatic intermittent titration technique.