当前位置: X-MOL 学术Polym. J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of Li salt addition on electrochemical properties of poly(ethylene carbonate)-Mg salt electrolytes
Polymer Journal ( IF 2.3 ) Pub Date : 2018-08-15 , DOI: 10.1038/s41428-018-0113-z
Azlini Ab Aziz , Yoichi Tominaga

AbstractWe report the ion-conductive and electrochemical properties of solid polymer electrolytes (SPEs) based on poly(ethylene carbonate) (PEC) and magnesium bis(trifluoromethanesulfonyl)imide, Mg(TFSI)2, with the inclusion of small amounts of lithium bis(fluorosulfonyl)imide, LiFSI. The addition of LiFSI improved the ionic conductivity of PEC-Mg(TFSI)2 from ~2.3 × 10−6 S cm−1 to ~1.0 × 10−5 S cm−1 at 80 °C. Cyclic voltammetry revealed that the plating/stripping reaction of Mg is enhanced by the addition of LiFSI. Linear sweep voltammetry found that the addition of LiFSI has no negative influence on the electrochemical oxidation stability of the electrolyte, which reached 2 V vs. Mg/Mg2+. The addition of a small amount of LiFSI proves to be an effective method for enhancing the ion-conductive and electrochemical performance of PEC-based Mg electrolytes.Ion-conductive and electrochemical properties of solid polymer electrolytes based on poly(ethylene carbonate) (PEC) and magnesium bis(trifluoromethanesulfonyl)imide, Mg(TFSI)2, with small amount of lithium bis(fluorosulfonyl)imide, LiFSI were investigated. The addition of LiFSI improved the ionic conductivity of PEC-Mg(TFSI)2, from ~2.3 × 10−6 S cm−1 to ~1.0 × 10-5 S cm−1 at 80 °C. Cyclic voltammetry measurements for PEC-based electrolytes revealed that the plating/stripping reaction of Mg/Mg2+ is enhanced by the addition of LiFSI.

中文翻译:

添加锂盐对聚碳酸亚乙酯-镁盐电解液电化学性能的影响

摘要我们报告了基于聚碳酸亚乙酯 (PEC) 和双(三氟甲磺酰基)亚胺镁 Mg(TFSI)2 的固体聚合物电解质 (SPEs) 的离子导电和电化学性能,其中包含少量双(氟磺酰)亚胺,LiFSI。LiFSI 的添加将 PEC-Mg(TFSI)2 的离子电导率从 ~2.3 × 10−6 S cm−1 提高到 ~1.0 × 10−5 S cm−1 在 80 °C。循环伏安法表明,添加 LiFSI 增强了 Mg 的电镀/剥离反应。线性扫描伏安法发现,LiFSI 的添加对电解液的电化学氧化稳定性没有负面影响,达到 2 V vs. Mg/Mg2+。添加少量 LiFSI 被证明是提高 PEC 基镁电解质离子传导和电化学性能的有效方法。 基于聚碳酸亚乙酯 (PEC) 的固体聚合物电解质的离子传导和电化学性能研究了双(三氟甲磺酰)亚胺镁 Mg(TFSI)2 和少量双(氟磺酰)亚胺锂 LiFSI。LiFSI 的添加提高了 PEC-Mg(TFSI)2 的离子电导率,在 80 °C 时从 ~2.3 × 10−6 S cm−1 到 ~1.0 × 10-5 S cm−1。基于 PEC 的电解质的循环伏安法测量表明,添加 LiFSI 增强了 Mg/Mg2+ 的电镀/剥离反应。研究了基于聚(碳酸亚乙酯)(PEC)和双(三氟甲磺酰基)酰亚胺镁 Mg(TFSI)2 以及少量双(氟磺酰基)酰亚胺锂 LiFSI 的固体聚合物电解质的离子导电和电化学性能。LiFSI 的添加提高了 PEC-Mg(TFSI)2 的离子电导率,在 80 °C 时从 ~2.3 × 10−6 S cm−1 到 ~1.0 × 10-5 S cm−1。基于 PEC 的电解质的循环伏安法测量表明,添加 LiFSI 增强了 Mg/Mg2+ 的电镀/剥离反应。研究了基于聚(碳酸亚乙酯)(PEC)和双(三氟甲磺酰基)酰亚胺镁 Mg(TFSI)2 以及少量双(氟磺酰基)酰亚胺锂 LiFSI 的固体聚合物电解质的离子导电和电化学性能。LiFSI 的添加提高了 PEC-Mg(TFSI)2 的离子电导率,在 80 °C 时从 ~2.3 × 10−6 S cm−1 到 ~1.0 × 10-5 S cm−1。基于 PEC 的电解质的循环伏安法测量表明,添加 LiFSI 增强了 Mg/Mg2+ 的电镀/剥离反应。
更新日期:2018-08-15
down
wechat
bug