一种铜基层状配位聚合物：合成、磁性能及在超级电容器中的电化学性能

A copper-based layered coordination polymer: synthesis, magnetic properties and electrochemical performance in supercapacitors.

作者信息

Liu Qi, Liu Xiuxiu, Shi Changdong, Zhang Yanpeng, Feng Xuejun, Cheng Mei-Ling, Su Seng, Gu Jiande

机构信息

School of Petrochemical Engineering and Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, P. R. China.

出版信息

Dalton Trans. 2015 Nov 28;44(44):19175-84. doi: 10.1039/c5dt02918j. Epub 2015 Oct 21.

DOI:10.1039/c5dt02918j

PMID:26487265

Abstract

A copper-based layered coordination polymer ([Cu(hmt)(tfbdc)(H2O)]; hmt = hexamethylenetetramine, tfbdc = 2,3,5,6-tetrafluoroterephthalate; Cu-LCP) has been synthesized, and it has been structurally and magnetically characterized. The Cu-LCP shows ferromagnetic interactions between the adjacent copper(II) ions. Density functional theory calculations on the special model of Cu-LCP support the occurrence of ferromagnetic interactions. As an electrode material for supercapacitors, Cu-LCP exhibits a high specific capacitance of 1274 F g(-1) at a current density of 1 A g(-1) in 1 M LiOH electrolyte, and the capacitance retention is about 88% after 2000 cycles.

摘要

一种基于铜的层状配位聚合物（[Cu(hmt)(tfbdc)(H₂O)]；hmt = 六亚甲基四胺，tfbdc = 2,3,5,6 - 四氟对苯二甲酸酯；Cu - LCP）已被合成，并对其进行了结构和磁性表征。Cu - LCP在相邻的铜（II）离子之间表现出铁磁相互作用。对Cu - LCP特殊模型的密度泛函理论计算支持了铁磁相互作用的存在。作为超级电容器的电极材料，Cu - LCP在1 M LiOH电解液中，电流密度为1 A g⁻¹时，表现出1274 F g⁻¹的高比电容，并且在2000次循环后电容保持率约为88%。