Superior high-rate and cycle performances of a single-phase ferrous orthophosphate Na1.2Fe4(PO4)3 anode material for lithium-ion batteries

Synergistic interface and structural engineering for high initial coulombic efficiency and stable sodium storage in metal sulfides

“…To gain a more comprehensive understanding of the exceptional Na + storage performance, the Na + diffusion coefficient ( D Na + ) is studied according to the galvanostatic intermittent titration technique (GITT). 46 The D Na + during the sodiation process can be calculated based on the following equation, 47 with details of formula information provided in Fig. S9: † …”

Recycling of Plastic Wastes for the Mass Production of Yolk–Shell-Nanostructured Co3O4@C for Lithium-Ion Batteries

“…The Li + diffusion coefficients ( D Li + ) of the YSS Co 3 O 4 @C electrode (2.08 × 10 –14 –7.54 × 10 –11 cm 2 s –1 ) are larger than those of the CSS Co 3 O 4 @C electrode (6.67 × 10 –15 –4.23 × 10 –11 cm 2 s –1 ) during the whole lithiation/delithiation processes. The minimum D Li + was obtained at around the platform voltage during the discharge procedure, which was derived from the phase transition of Co 3 O 4 in the lithium-ion insertion/extraction processes . Besides, the N 2 isotherms were employed to estimate the specific surface area, as shown in Figure S8a.…”

“…The minimum D Li + was obtained at around the platform voltage during the discharge procedure, which was derived from the phase transition of Co 3 O 4 in the lithium-ion insertion/ extraction processes. 54 Besides, the N 2 isotherms were employed to estimate the specific surface area, as shown in Figure S8a. The specific surface area of YSS Co 3 O 4 @C was calculated to be 191.2 m 2 g −1 based on the DFT method, which is higher than that of CSS Co 3 O 4 @C (127.8 m 2 g −1 ).…”