Development of high capacity all-solid-state lithium battery using quasi-solid-state electrolyte containing tetraglyme–Li-TFSA equimolar complexes

• Published in: Solid state ionics Vol. 262; pp. 765 - 768
• Main Authors: Unemoto, Atsushi, Gambe, Yoshiyuki, Komatsu, Daiki, Honma, Itaru
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2014
• Subjects: All-solid-state cell configuration; Dimethyl ether; Electrodes; Electrolytes; Lithium; Lithium batteries; Lithium rechargeable battery; Nanoparticles; Polyacrylonitrile sulfide; Quasi-solid-state electrolyte; Rechargeable batteries; Sulfides; Tetraglyme–Li-TFSA equimolar complex; Tetraglyme–Li-TFSA equimolar complex; Polyacrylonitrile sulfide; Lithium rechargeable battery; All-solid-state cell configuration; Quasi-solid-state electrolyte
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/j.ssi.2013.09.043

Polyacrylonitrile sulfide (PAN-S) was synthesized for use as a positive electrode of a lithium rechargeable battery. To assemble the lithium rechargeable battery with an all-solid-state cell configuration, we also prepared a quasi-solid-state electrolyte consisting of a room temperature ionic liquid (RTIL)-like equimolar complex of tetraethylene glycol dimethyl ether (tetraglyme, G4)–lithium bis(trifluoromethanesulfonyl)amide (Li-TFSA) and fumed silica nanoparticles. The lithium rechargeable battery with the PAN-S positive electrode, quasi-solid-state electrolyte and lithium negative electrode showed high capacity and good cycle performance. The 2nd and 50th discharge capacities were 450 and 390mAhg−1, respectively, with nearly 100% Coulombic efficiency without remarkable capacity fade during the operation. •Lithium rechargeable cell with all-solid-state cell configuration was assembled.•Polyacrylonitrile sulfide positive electrode was used for the cell assembly.•The cell exhibited high capacity and stable charge–discharge performances.