Fabrication of thiophene derivatives electrolyte for all solid polymer secondary battery
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초록
내용
The demand for lithium secondary batteries in the middle or large sized battery market such as electric vehicles and ESS has increased, and the market for secondary batteries has been developing, but lithium ion batteries have a risk of liquid electrolyte. Lithium polymer batteries have attracted attention, but existing solid polymer electrolytes have a problem that their ionic conductivity efficiency is lower than that of liquid electrolytes. To solve this problem, an electrolyte capable of minimizing the interface resistance with homogeneous polymer electrodes is produced by introducing oligo(3,4-ethylene dioxy thiophene), a thiophene-based derivative with excellent electrical conductivity. The lithium secondary battery of a new system which reduces the interface resistance between the electrode and electrolyte is developed by introducing poly(EDOT-co-DMTP) as an anode material, p-doped PEDOT as a cathode material and oligo (3,4-ethylene dioxy thiophene) as an electrolyte.