An iron supramolecular compound containing terpyridine polycarboxylic acid for high performance lithium-ion batteries
作者:Haitao Zhu、Shengyun Liao、Rongrong Bian、Boya Su、Xiaohui Ding、Mengying Li、Shuxian Ge、Haode Zhang、Qiang Liu
DOI:10.1016/j.ica.2022.120848
日期:2022.5
A 4-pyridine functionalized terpyridine polycarboxylic acid (HTPYPA = 4′-(pyridin-4-yl)-[2,2′:6′,2′'-terpyridine]-4,4′'-dicarboxylate) has been designed and synthesized. With this ligand, an iron supramolecular compound (Fe(HTPYPA)2) was synthesized by using the coordination-driven self-assembly strategy. Fe(HTPYPA)2 has been characterized by single-crystal X-ray diffraction, scanning electron microscopy
4-吡啶官能化三联吡啶多元羧酸 (HTPYPA = 4'-(pyridin-4-yl)-[2,2':6',2''-terpyridine]-4,4''-dicarboxylate)合成的。使用该配体,利用配位驱动的自组装策略合成了一种铁超分子化合物(Fe(HTPYPA) 2 )。Fe(HTPYPA) 2已通过单晶X射线衍射、扫描电子显微镜(SEM)、X射线粉末衍射仪(XRD)、X射线光电子能谱(XPS)等进行了表征。Fe(HTPYPA) 2作为锂离子电池负极材料时,在100 mA g -1的电流密度下循环300次后的可逆容量为650 mAh g -1和优异的循环稳定性,这可能归因于π共轭三联吡啶基多羧基与引入的Fe(II)离子之间的协同作用。