JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 33 Issue 5
September 2018
Article Contents
XING Yalan, CHEN Hongzhou, WU Hao, et al. Study on preparation and electrochemical performance of new all-solid-state polymer electrolyte PEG475-DMAA copolymer[J]. Journal of Light Industry, 2018, 33(5): 69-76. doi: 10.3969/j.issn.2096-1553.2018.05.009
Citation: XING Yalan, CHEN Hongzhou, WU Hao, et al. Study on preparation and electrochemical performance of new all-solid-state polymer electrolyte PEG475-DMAA copolymer[J]. Journal of Light Industry, 2018, 33(5): 69-76. doi: 10.3969/j.issn.2096-1553.2018.05.009 shu

Study on preparation and electrochemical performance of new all-solid-state polymer electrolyte PEG475-DMAA copolymer

  • Received Date: 2018-07-01
  • A photo-polymerization synthesis process without organic solvent was used. Polyethylene glycol methacrylate (PEG475) was used as the matrix, N,N dimethyl acrylamide (DMAA) was used as the crosslinking agent, and the plasticizer succinonitrile (SN)was introduced, a new all-solid polymer electrolyte (PEG475-DMAA) was prepared and its electrochemical performance was tested. The results showed that when the addition amount of SN was 10% (mass fraction), the ionic conductivity of the electrolyte system was the largest, about 4×10-5 S/cm, which was increased by three orders of magnitude relative to the polyoxyethylene system. The electrochemical stability window was above 5.0 V, which satisfied the voltage stability requirements of the currently-used electrolyte system. The electrolyte had good thermal stability in the range of 270℃. The lithium ion battery assembled by the electrolyte membrane had a low initial capacity. There was still a big gap with commercial lithium-ion batteries. In the future, it is necessary to further improve the ionic conductivity of the electrolyte membrane and improve the electrochemical cycle performance.
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