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Solid Polymer Electrolytes Based on Functionalized Tannic Acids from Natural Resources for All‐Solid‐State Lithium‐Ion Batteries
Author(s) -
Shim Jimin,
Bae Ki Yoon,
Kim Hee Joong,
Lee Jin Hong,
Kim DongGyun,
Yoon Woo Young,
Lee JongChan
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201501110
Subject(s) - ethylene glycol , ionic conductivity , glycidyl methacrylate , polymerization , plasticizer , polymer chemistry , polymer , methacrylate , materials science , monomer , lithium (medication) , chemistry , chemical engineering , electrolyte , organic chemistry , medicine , electrode , engineering , endocrinology
Solid polymer electrolytes (SPEs) for all‐solid‐state lithium‐ion batteries are prepared by simple one‐pot polymerization induced by ultraviolet (UV) light using poly(ethylene glycol) methyl ether methacrylate (PEGMA) as an ion‐conducting monomeric unit and tannic acid (TA)‐based crosslinking agent and plasticizer. The crosslinking agent and plasticizer based on natural resources are obtained from the reaction of TA with glycidyl methacrylate and glycidyl poly(ethylene glycol), respectively. Dimensionally stable free‐standing SPE having a large ionic conductivity of 5.6×10 −4 S cm −1 at room temperature can be obtained by the polymerization of PEGMA into P(PEGMA) with a very small amount (0.1 wt %) of the crosslinking agent and 2.0 wt % of the plasticizer. The ionic conductivity value of SPE with a crosslinked structure is one order of magnitude larger than that of linear P(PEGMA) in the waxy state.