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Poly(ethylene oxide)‐grafted polymers as materices for all‐solid batteries
Author(s) -
Matsuda Yoshiharu,
Morita Masayuki,
Tsutsumi Hiromori
Publication year - 1993
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1993.220040223
Subject(s) - materials science , ethylene oxide , poly ethylene , polymer , oxide , ethylene , chemical engineering , polymer science , nanotechnology , copolymer , composite material , organic chemistry , catalysis , metallurgy , engineering , chemistry
Two approaches for the preparation of highly ionconductive polymeric solid electrolytes have been followed: one was to add crown ether to cross‐linked poly(ethylene oxide) grafted methacrylate polymer swollen by lithium salt/propylene carbonate solution; and the other was to select crosslinked poly(dimethylsiloxane) with a low glass transition temperature for the matrix material. The conductivity of the former electrolyte was 3.2 × 10 −3 S/cm even in the absence of crown ether at 20°C and increased to 4.0 × 10 −3 S/cm by the addition of 15‐Crown‐5. The addition of crown ether in the electrolyte also affected the plating and stripping processes of Lion Ni substrate. The latter electrolyte was prepared as a single ion type polymeric solid electrolyte. The conductivity of the electrolyte was ca 10 −5 S/cm at room temperature. The polarization curves of Li in the electrolyte were symmetric for O V vs. Li/Li + , therefore the plating and stripping of Li electrode in the electrolyte were reversible. The behavior of the latter electrolyte is preferable for rechargeable lithium battery use.