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首页> 中文期刊> 《天津大学学报：英文版》 >Enhanced Electrochemical Performance of Poly(ethylene oxide)Composite Polymer Electrolyte via Incorporating Lithiated Covalent Organic Framework

Enhanced Electrochemical Performance of Poly(ethylene oxide)Composite Polymer Electrolyte via Incorporating Lithiated Covalent Organic Framework

         
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The lithiated covalent organic framework(named TpPa-SO_(3) Li),which was prepared by a mild chemical lithiation strategy,was introduced in poly(ethylene oxide)(PEO)to produce the composite polymer electrolytes(CPEs).Li-ion can transfer along the PEO chain or across the layer of TpPa-SO_(3) Li within the nanochannels,resulting in a high Li-ion conductivity of3.01×10^(-4)S/cm at 60℃.When the CPE with 0.75 wt.%TpPa-SO_(3) Li was used in the LiFePO_(4)‖Li solid-state battery,the cell delivered a stable capacity of 125 mA·h/g after 250 cycles at 0.5 C,60℃.In comparison,the cell using the CPE without TpPa-SO_(3) Li exhibited a capacity of only 118 mA·h/g.

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