Self-templated fabrication of micro/nano structured iron fluoride for high-performance lithium-ion batteries

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF3 ⋅ 0.33H2O Cathode for Li‐Ion Batteries

“…The corresponding crystal structure was shown in Figure 1b. It can be found that FeF 3 ⋅ 0.33H 2 O possesses a special hexagonal cavity, which can provide a rapid pathway for Li‐ion transmission during the insertion/extraction process [17] . Besides, the Raman spectrum of NSPC was carried out to probe the graphitization, as shown in Figure 1c.…”

“…To better understand the electrochemical performances of these two samples, EIS tests were performed and shown in Figure 4f. Each profile is composed of a sloped line in the low‐frequency region and a semicircle in the high‐frequency range, which reflect the Li + diffusion impedance in the solid electrode and the charge transfer resistance ( R ct ) at the electrolyte/electrode interface, respectively [17,32] …”

“…Although many merits have been proved, its electronic conductivity and reaction kinetics still cannot satisfy the application requirements. To mitigate these obstacles, many strategies were provided, such as element doping, morphologies design and preparation composite with conductive additives [16–18] . Generally, one of the major measures is mixing FeF 3 ⋅ 0.33H 2 O with conductive carbonaceous materials to improve electric conductivity and reaction kinetics [19] .…”

Unravelling lithiation mechanisms of iron trifluoride by operando X-ray absorption spectroscopy and MCR-ALS chemometric tools

“…HTB-FeF 3 is obtained most of the time with water molecules stabilized in the structural channels and is not convenient for long cycling stability 4 . If many studies were conducted on hydrated HTB [5][6][7][8][9] and hydrated pyrochlore [10][11][12] , little is known about anhydrous phases. Especially, the rhombohedral structure is less studied because of the high temperature required to obtain this structure 4 , however it is also the most stable as it does not exist in an hydrated form in opposite to the other structures.…”

3D Starfish‐Like FeOF on Graphene Sheets: Engineered Synthesis and Lithium Storage Performance

“…FeF 3 ⋅ 0.33 H 2 O (0D nanoparticles)/rGO, FeOF (1D nanorods)/rGO, and Fe 1.9 F 4.75 ⋅ 0.95 H 2 O (3D urchin‐like spheres)/rGO samples were also successfully synthesized through this assembly and thermal reduction strategy. Accordingly, FeOF nanorods was obtained by terminating the solvothermal reaction at 20 h, whereas the FeF 3 ⋅ 0.33 H 2 O nanoparticles and urchin‐like Fe 1.9 F 4.75 ⋅ 0.95 H 2 O spheres were synthesized according to methods reported previously …”