CAJ | 학술논문

将锂化后的Nafion树脂与聚乙二醇二甲醚按不同比例共混涂膜，制备得到新的固态单一离子聚合物锂离子电解质膜，并对该电解质膜的热化学稳定性，机械强度，微观形貌以及电化学性能等进行了测试和分析。TGA测试表明该电解质膜在250℃以下具有较好的热稳定性；拉伸强度最大可达到4.25 MPa；当EO/Li+为20时，电解质膜的锂离子电导率可分别达到2.16×10－5 S/cm(40℃)和4.26×10－4 S/cm(100℃)；此外，该电解质膜的锂离子迁移数大于0.9，接近于单一锂离子导体。所制备的电解质膜有望在中高温锂电池中得到应用。
장리화후적Nafion수지여취을이순이갑미안불동비례공혼도막，제비득도신적고태단일리자취합물리리자전해질막，병대해전해질막적열화학은정성，궤계강도，미관형모이급전화학성능등진행료측시화분석。TGA측시표명해전해질막재250℃이하구유교호적열은정성；랍신강도최대가체도4.25 MPa；당EO/Li+위20시，전해질막적리리자전도솔가분별체도2.16×10－5 S/cm(40℃)화4.26×10－4 S/cm(100℃)；차외，해전해질막적리리자천이수대우0.9，접근우단일리리자도체。소제비적전해질막유망재중고온리전지중득도응용。
Novel single-ion solid-state polymer lithium-ion electrolyte membranes were prepared by blending lithiated perfluorinated sulfonic with polyethylene glycol dimetyl ether [PEGDE, CH3O(CH2CH2O) CH3, =3-8] in various molar ratios of ethylene oxide unite to Li+ (EO/Li+). The fundamental properties of thermal stability, mechanical strength, micro-morphology and electrochemical performance were studied. The TGA test shows that the polymer electrolyte membranes are thermal y stable up to 250℃and the maximum tensile strength is up to 4.25 MPa. At a EO/Li+ratio of 20, high ionic conductivities of 4.26×10-4 and 2.16×10-5 S/cm are obtained at 100 and 40℃,respectively. The solid polymer menbrane exhibits single lithium-ion conductor behavior with Li+>0.9. It’s hopeful that the prepared electrolyte membranes would be used in mid and high temperature lithium-ion battery.