DDBA改性纤维对PEO聚合物电解质性能的影响  

Effect of DDBA Modified Aramid Fiber on PEO Polymer Electrolyte

作　　者：郭宝明 张爱玲[1] 唐铠鸿 王艳奇 GUO Bao-ming;ZHANG Ai-ling;TANG Kai-hong;WANG Yan-qi(School College of Environmental and Chemical Engineering,Shenyang University of Technology,Shenyang Liaoning 110870,China)

机构地区：[1]沈阳工业大学环境与化学工程学院,辽宁沈阳110870

出　　处：《辽宁化工》2023年第3期327-330,共4页Liaoning Chemical Industry

基　　金：沈阳市重大科技成果转化专项(Grant No.20-203-5-01);俄联邦教育及科学部项目(Grant No.11.9505.2017/8.9)。

摘　　要：针对聚环氧乙烷(PEO)基聚合物电解质室温易结晶的问题,将4-4-二羟基-α,α'-二甲基卞联氮(DDBA)改性芳纶纤维(DF)掺杂在基体中,抑制PEO结晶,提高其离子电导率。通过交流阻抗、差式扫描量热等方法进行表征。结果表明:制备的聚合物电解质在少量DF掺杂时离子电导率有所改善,其中掺杂质量分数2.0%DF的电解质电化学性能最好,在25℃下电导率达到1.5×10^(-5) S/cm,离子迁移数提高至0.30。To address the problem that polyethylene oxide(PEO)-based polymer electrolytes are prone to crystallization at room temperature,4-4-dihydroxy-α,α'-dimethylbianonitrile(DDBA)-modified aramid fibers(DF)were doped into the matrix to inhibit PEO crystallization and improve its ionic conductivity.Characterization was performed by AC impedance and differential scanning calorimetry.The results showed that the prepared polymer electrolytes improved ionic conductivity with a small amount of DF doping,and the electrolyte doped with 2.0%(mass fraction)DF had the best electrochemical performance,reaching the conductivity of 1.5×10^(-5) S·cm^(-1) at 25℃and ion mobility number increased to 0.30.

关 键 词：聚环氧乙烯 离子电导率 4-4-二羟基-α α'-二甲基卞联氮 离子迁移数 

分 类 号：TQ314.2[化学工程—高聚物工业]