Existence of Al2F7− in molten MF–AlF3 (M = K, Cs) systems as determined by Raman spectroscopy and structural simulation

Porous FeF3/MWCNTs composite cathode promoting high performance aluminum storage

“…After fully discharging, the intensity of the newly emerged peaks increased significantly and the content of the new species increased. The band at 333 cm −1 can be judged as FeF 2 , 35 while the bands at 116 and 596 cm −1 represent AlF 3 , 36 so it can be confirmed that the FeF 3 cathode undergoes a conversion reaction during the discharge to generate FeF 2 and AlF 3 , and with the deepening of the reaction, the content of AlF 3 also increases.…”