The characteristics of the interface between Ni-rich cathode materials and carbonate-based electrolytes are crucial for stability in charge-discharge cycles. In this study, we used tris(trimethylsilyl)phosphite (TMSPi) as an additive for film formation and investigated the properties of the layer formed on a LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) thin-film electrode. This layer can act as a barrier to mitigate the underlying attack at the oxygen sites of the layered Ni-rich structure. Moreover, this layer mainly consists of Li-rich organic components, leading to a decreased activation energy with a rapid Li-ion transfer process.

Physicochemical properties of bis(fluorosulfonyl)amide anion-based ionic liquids (ILs) adsorbed on solid oxide electrolyte powder of cubic Li₇La₃Zr₂O₁₂ (LLZ) partially substituted by Mg and Sr were evaluated. In this study, an experimental system that ion does not pass the interface between LLZ and IL was selected by using ILs without lithium salt in order to elucidate the properties of adsorbed ILs layer. We prepared mixtures of LLZ with 1-methyl-1-propylpyrrolidinium bis(fluorosulfonyl)amide and 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)amide of various average IL thickness on LLZ particles by changing the IL volume per LLZ surface area. Evaluation of ionic conductivity and thermal property, and measurement of nuclear magnetic resonance spectra of these samples were performed. The results indicate the existence of an IL adsorption layer on the LLZ surface that shows solid-like behavior.

A new automated analytical method for the determination of Butyrylcholinesterase (BChE) based on sequential injection analysis (SIA) method using a butyrylcholine chloride (BuCh) ion-selective electrode (ISE) detector was developed. BuCh is degraded to choline and butyrate by the enzymatic activity of BChE, resulting in a decrease in BuCh concentration. By detecting this change in BuCh concentration with BuCh-ISE, BChE can be determined indirectly. In the present SIA method using the BuCh-ISE detector based on α-cyclodextrin membrane, BChE in the concentration range of 0.015–0.50 units/mL was determined at a BuCh concentration of 2.0 mmol dm⁻³ and a reaction time of 5.0 min. The detection limit for BChE is 4.8 × 10⁻³ units/mL.