A lithium-ion conducting gel polymer electrolyte (GPE) membrane containing PEO as a polymer host and liquid electrolyte has been prepared by a simple one-step procedure. The prepared electrolyte membrane exhibits a good ionic conductivity of 3.3 × 10?3 S cm?1 and high lithium transference number of 0.76 at room temperature. Meanwhile, the gel polymer electrolyte membrane shows very good thermal stability. A Li/GPE/LiFeO4 cell was fabricated to demonstrate the electrochemical performance of the GPE. The cell exhibits good cycling stability with a high capacity retention of 81% after 500 cycles and as good a rate performance as LiFeO4 tested in liquid electrolyte.
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机译:包含PEO作为聚合物主体和液体电解质的锂离子导电凝胶聚合物电解质(GPE)膜已经通过简单的一步过程制备。制备的电解质膜具有良好的离子电导率,为3.3×10 ?3 sup> small> S cm ?1 sup> small>在室温下的迁移率为0.76。同时,凝胶聚合物电解质膜显示出非常好的热稳定性。制备了Li / GPE / LiFeO 4 sub> small>电池,以证明GPE的电化学性能。该电池表现出良好的循环稳定性,在500次循环后具有81%的高容量保持率,并具有在液体电解质中测试的LiFeO 4 sub> small>良好的倍率性能。
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