Electrochemical performances of gel polymer electrolytes using tetra(ethylene glycol) diacrylate |
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Authors: | Hyun-Soo Kim Jung-Han Shin Mun-Soo Yun |
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Affiliation: | a Korea Electrotechnology Research Institute, 28-1 Seongju-dong, Changwon 641-120, South Korea b Saehan Enertech, 728, Mokhang-dong, Chungju, Chungbuk 380-240, South Korea |
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Abstract: | A gel polymer electrolyte (GPE) was prepared using tetra(ethylene glycol) diacrylate monomer, benzoyl peroxide, and (). The LiCoO2/GPE/graphite cells were prepared and their electrochemical properties were evaluated at various current densities and temperatures.The viscosity of the precursor containing the tetra(ethylene glycol) diacrylate monomer was around . The ionic conductivity of the gel polymer electrolyte at 20°C was around . The gel polymer electrolyte had good electrochemical stability up to vs. Li/Li+. The capacity of the LiCoO2/GPE/graphite cell at rate was 63% of the discharge capacity at rate. The capacity of the cell at −10°C was 81% of the discharge capacity at 20°C. Discharge capacity of the cell with gel polymer electrolyte was stable with charge-discharge cycling. |
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Keywords: | Gel polymer electrolyte Cell Tetra(ethylene glycol) diacrylate Benzoyl peroxide Lithium-ion polymer battery Advanced lithium-ion battery |
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