Surface films of lithium: an overview of electrochemical studies

Plasticized pectin-based gel electrolytes

“…3b). Munichandraiah et al [17] observed a similar impedance response for the Li/PEO 8 -LiClO 4 /Li cell at 80 • C and from the equivalent circuit figure caption they stated that high-frequency resistance without capacitance at high temperature is due to the SPE film. They also observed two semicircles at room temperature and following Thevenin and Muller [18] they discarded the solid electrolyte resistance (SEI) model.…”

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

“…It is generally accepted that the SEI consists of two layers: i) an inorganic phase based on lithium compounds such as LiF, Li 2 CO 3 , etc., and ii) an organic phase composed of lithium compounds with various hydrocarbon moieties from organic solvents in the electrolyte. [58][59][60][61] The structure of the SEI layer, which acts as an interphase between the lithium electrode and the electrolyte, changes to a more complex morphology with the repeated cycling. The electrochemically stable SEI layer on the lithium electrode surface can diminish unexpected electrochemical behaviors such as low cycling effi ciency, gradual capacity loss, and poor cycleability.…”

Hollow MnCo2O4 Submicrospheres with Multilevel Interiors: From Mesoporous Spheres to Yolk-in-Double-Shell Structures

“…In the subsequent four cycles, a decrease in the reduction peak intensity could be observed with a shift of the potential (0.82 V) to the positive direction, which reflects the irreversible electrochemical reaction during the first discharge cycle. , corresponding to the two slope ranges, are mainly ascribed to two factors: the formation of the solid electrolyte interface (SEI) film 23 and the organic polymeric/gel-like layer. 24 Comparing them, the first one is irreversible, as demonstrated by the following discharge cycles; the latter one originates from the reversible formation/dissolution of an organic polymeric/gel-like layer by electrolyte decomposition, which could deliver an extra capacity through a so-called "pseudo-capacitive behavior".…”