Fabrication of all solid-state lithium polymer secondary batteries using PEG-borate/aluminate ester as plasticizer for polymer electrolyte

Dynamic Transport in Li‐Conductive Polymer Electrolytes Plasticized with Poly(ethylene glycol)–Borate/Aluminate Ester

“…This behavior can be ascribed to the smaller molecular size of PEG-DME (with a total of eleven EO units) compared to the other plasticizers (with a total of 27 EO units in B-PEG and Al-PEG). Note that in our previous studies, [2][3][4] a clear tendency was found, indicating that an enhanced segmental motion of the polymer is induced by plasticizers with smaller EO units, which leads to a higher mobility of the ions.…”

“…Details of the preparation are described elsewhere. [3,4,7] The temperature dependence of the ionic conductivity of the sample was determined through AC impedance experiments carried out using a Hewlett-Packard 4192A LF impedance analyzer over the frequency range from 5 Hz to 13 MHz. Samples of the SPE films (1 mm thick) were sandwiched between two stainless-steel electrodes in an Ar-filled air-tight vessel.…”

“…Samples of the SPE films (1 mm thick) were sandwiched between two stainless-steel electrodes in an Ar-filled air-tight vessel. [4] The 7 Li and 19 F NMR experiments were carried out using a Bruker Avance DSX 300 NMR spectrometer operating at 300.11 MHz for 1 H with a field-gradient generator system (with the maximum fieldgradient strength: 11.60 T m À1 ). A PGStE method (consisting of: p/2 pulse -t 1 -p/2 pulse -t 2 -p/2 pulse -t 1 -echo) was employed for the diffusion-coefficient measurements, as reported previously.…”

“…In this respect, much attention has been paid to increasing the ionic conductivity of SPEs by designing polymer structures at the molecular level, adding plasticizers, and so on. In a previous study, we suggested the addition of a plasticizer composed of poly(ethylene glycol) (PEG)-borate ester (B-PEG) [2,3] or PEG-aluminate ester (Al-PEG) [4] (see Figure 1), which shows enhanced ionic conductivity and thermal stability (higher flash points of plasticizers [3] ). In addition, a higher transport number with a lowering of the anion mobility and the salt dissociation was expected for these SPEs due to the Lewis acidity of the group-13 elements, which would capture and trap the anions selectively.…”

Optimization of product line design for environmentally conscious technologies in notebook industry

“…In addition, lithium polymer batteries can be made in as many shapes as consumers like. Masuda et al, (2007) indicates that lithium polymer batteries provide better safety and energy density and can be made light weight and provide long life. Lightness, thinness, material savings and stable life are the most environmental characteristics of lithium polymer batteries.…”