【摘要】 以自制的甲基丙烯酸甲酯与马来酸酐的共聚物(P(MMA-MAh))为基体,丙烯碳酸酯(PC)为增塑剂,LiClO4为锂盐,制备成凝胶聚合物电解质(GPE);采用交流阻抗法、差示扫描量热法(DSC)、热失重分析(TGA)对此GPE的电性能及热性能作了研究,并且研究了不同配比及温度对其离子电导率的影响。结果表明,以P(MMA-MAh)为基体的GPE与PMMA基GPE相比,共聚型P(MMA-MAh)的凝胶体系较好的成膜性和热稳定性;当共聚物含量为60%(质量分数)时,凝胶体系的玻璃化转变温度为27.28℃,质量损失为5%时热分解温度为145℃;当共聚物含量为45%(质量分数)时,凝胶聚合物电解质的综合性能较好;且共聚物P(MMA-MAh)基GPE的离子电导率与温度的关系服从Arrhenius方程。更多还原

【Abstract】 The gel polymer electrolyte was prepared with the copolymer P(MMA-MAh) as resin,PC as a plasticizer and LiClO4 as a salt.The electricial properties and thermal properties of the gel polymer electrolyes were studied by alternating current impedance,differential scanning calorimetry(DSC) and Thermogravimetric analysis(TGA),together the influence of different ratio and temperature on conductivities of the gel polymer electrolytes were studied.Results showed that the freeding films of the GPE based on P(MMA-MAh) was better than GPE based on pure PMMA-based GPE.The glass transition temperature was 27.28℃ and the thermal degradation temperature was 145℃ when the mass loss percent was 5.0 % of the GPE for containing 60 wt.% P(MMA-MAh).The properties of gel polymer electrolyte is best for containing 45 wt.% P(MMA-MAh).The temperature dependence of the conductivity of the GPE obey the Arrhenius relationship.更多还原