Polyethers with phosphate pendant groups by monomer activated anionic ring opening polymerization: Syntheses, characterization and their lithium-ion conductivities
作者:Heeralal Vignesh Babu、Krishnamurthi Muralidharan
DOI:10.1016/j.polymer.2013.12.005
日期:2014.1
increased the polymerization rate remarkably and yielded the polyethers with higher molar masses in a short time. These polymerizations proceeded following a “monomer activated anionic ring opening polymerization” mechanism. These living like polymerizations also progressed according to “formation of polymer chain per initiator” model. The solid-state lithium-ion conductivities of these polymers were examined
本文介绍了可能用于高能量密度锂离子电池的各种固体聚合物电解质的制备和锂离子电导率。在四丁基溴化铵(TBAB)存在下,由Zn(II),Cu(II)和Cd(II)配合物催化的环氧化物(M1 - M6)的开环聚合反应,生成聚醚(P1 - P6),其中磷酸盐作为侧基连接。Zn(II)催化剂的使用量略高于TBAB的反应条件显着提高了聚合速率,并在短时间内得到了较高摩尔质量的聚醚。这些聚合按照“单体活化的阴离子开环聚合”机理进行。这些类似聚合的反应也根据“每个引发剂的聚合物链的形成”模型而发展。使用双(三氟甲磺酰基)酰亚胺锂(LiTFSI)检查了这些聚合物的固态锂离子电导率。具有40 wt%的LiTFSI的一种固体聚合物电解质的电导率在室温下为5.2×10 -5 S cm -1,在室温下为2.9×10 -4 S cm -1 在80°C下。