Electrochemical kinetics study of Li-ion in Cu6Sn5 electrode of lithium batteries by PITT and EIS

Synthesis and electrochemical characteristics of NASICON-structured LiSn2(PO4)3 anode material for lithium-ion batteries

“…Consequently, the value of the apparent D Li for LiSn 2 (PO 4 ) 3 is calculated to be 9.02 Â 10 À13 cm 2 s À1 . This value is close to the reported value in a previous study [38], which agrees with our hypothesis that the existence of the Li 3 PO 4 matrix with a high Li ion diffusion coefficient has no influence on the Li ion diffusion in the active tin component. Additionally, the Li 3 PO 4 matrix provides steady ion channels and maintains the integrity of electrode structure during cycling.…”

A study of the lithium intercalation into nanoparticles of LiCoO2 from an aqueous solution

“…This high surface area, on the other hand, can arise from the porous structure of the electrode and the rough structure at the film particle interface [24] (vide infra). In addition, it should be noted that very high-frequency semicircles observing in some studies on the lithium intercalation process for composite electrodes [32,33]. These semicircles have been attributed to the interface parameters such as electrode porosity, surface film formed on the active material and the current collector, and/or bulk of materials, may appear at very high frequencies and were not detectable in the swept frequency range in this work.…”

“…Prosini et al [43] related this minimum to the strong attractive interactions between the lithium ions and the host lattice. Zhang et al [32] related this minimum to the severe structural change and phase transformation of the host lattice during and also to the temporary strong Li-host lattice binding.…”

Na + /vacancy disordering promises high-rate Na-ion batteries

“…A lower charge transfer resistance ( R ct ) at the electrode/electrolyte interface and faster Na + diffusion associated with Warburg impedance ( Z w ) are obtained for P2-NaNMT using an electrochemical impedance spectroscopy (EIS) technique (fig. S17), which provides another side evidence that Na disordering facilitates electronic and Na + migration ( 42 , 43 ). …”