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Citation: SONG Zhao-Shuang, QI Lu, QIU Jing-Yi, MA Jian-Wei. Preparation and Characterization of γ-Ray Irradiated Gel Polymer Electrolyte for Lithium-Ion Polymer Batteries[J]. Acta Physico-Chimica Sinica, ;2007, 23(12): 1932-1936. doi: 10.3866/PKU.WHXB20071219 shu

Preparation and Characterization of γ-Ray Irradiated Gel Polymer Electrolyte for Lithium-Ion Polymer Batteries

1.
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China

Received Date: 17 September 2007
Available Online: 25 October 2007

The gel polymer electrolyte (GPE) based on PVDF-HFP and NPGDA network was prepared via γ-ray irradiation method. The structure, thermal stability and electrochemical performace of the GPE effected by irratiation dose were examined. The relationship between ionic conductivity and temperature followed Vogel-Tamman-Fulcher (VTF) equation, which suggested amorphous regions being dominant in GPE. The GPE irradiated at 5 kGy exhibited electrochemical stability up to 4.7 V vs Li/Li+ and high conductivity of 7.8×10-3 S·cm-1 at 25 ℃. In situ prepared LiMn2O4∣GPE∣Li cells exhibited od cycle performance, which provided a new approach to the fabrication of lithium-ion polymer batteries (LiPBs).
- Gel polymer electrolyte; γ-ray irradiation; Cross-linking network; VTF equation
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