【摘要】 以沉淀法制备的MnO2为正极材料,活性炭(AC)为负极材料,甲基丙烯酸甲酯(MMA)作聚合物单体,碳酸二甲酯(DMC)与碳酸乙烯酯(EC)的混合液作增塑剂,高氯酸锂为支持电解质,采用内聚合法制备PMMA基凝胶聚合物电解质MnO2/AC混合电容器。测试结果表明,随着MMA含量的降低,凝胶聚合物电解质的电导率增大,电容器的比容量也随之增大,当MMA的含量为20%时,凝胶聚合物电解质的电导率可达6.1×10–3S/cm,比容量为34.02F/g。更多还原

【Abstract】 MnO2 was synthesized by precipitation method, PMMA based gel polymer electrolytes MnO2/AC hybrid capacitors were fabricated by an in situ polymerization method with MnO2 as positive electrode and activated carbon as negative electrode. A mixture of dimethyl carbonate(DMC) and ethylene carbonate(EC) was used as plasticizer ,respectively. Lithium perchlorate was used as supporting electrolyte. The test results show that with the decrease of content of MMA, the conductivity of gel polymer electrolyte and the capacitance of capacitor is increasing. When the content of MMA is 20 %, the conductivity of the gel polymer electrolyte can reach 6.1×10–3 S/cm, the specific capacitance is 34.02 F/g.更多还原