Improvement of lithium interface stability with 1,4-dioxane pretreatment

Abstract

1,4-dioxane (DOA) was originally used to pretreat the lithium metal electrode in order to improve its interface stability. Electrochemical impedance spectra (EIS) measurements reveal that with DOA pretreatment, lithium electrode has a low and stable interfacial resistance during the storage in electrolyte for a long time. And it is also found that the pretreated lithium electrode has an improved interfacial performance in repeated charge/discharge cycles. Furthermore, it is proved by SEM that the pretreated one has smooth morphology after long-time storage or repeated charge/discharge cycles. Consequentially, because of more stable interface characteristics of lithium electrode, the rechargeable lithium cell with DOA pretreated lithium anode has an obviously enhanced discharging performance and a better cycleability, compared with that of the cell using the untreated lithium anode.

Fabrication and study on Ni1−xFexO-YSZ anodes for intermediate temperature anode-supported solid oxide fuel cells

“…The YSZ electrolyte film was coated by using colloidal spray coating technique, which was reported in our previous work [17,18]. LSM-YSZ composite cathode ink was applied on YSZ electrolyte film by screen-printing and sintered at 1200 • C for 2 h with a heating rate of 2 • C min −1 .…”

Solid electrolyte interphase formation on metallic lithium

“…This is difficult to compare these results with literature data due to the variety of solvents, salts and electrochemical conditions applied. In addition, there are very few works testing metallic-lithium [20][21][22], while in the case of the graphite anode, there are numerous studies. In the latter case attention is focused on charging/discharging efficiency [23][24][25][26][27][28][29], SEM observations of the graphite surface [8, 14, 23-25, 27, 29-31] and EIS analysis [23,24,29,30,[32][33][34][35].…”