高能量密度锂硫(Li-S)电池的实际可行性要求使用高负载阴极和贫电解液。然而,在如此恶劣的条件下,由于硫和多硫化物的利用率较差,液-固硫氧化还原反应严重滞后,导致容量低、衰落快。在此,自组装大环铜(II)配合物(CuL)被设计为有效的催化剂,以均匀化和最大化涉及液体的反应。与四个 N 原子配位的 Cu(II) 离子具有平面结构 d sp 2 ${\mathrm{d}}_{{\mathrm{sp}}^{2}}$ 杂化,显示出对多硫化锂(LiPS)的强键合亲和力 d z 2 ${\mathrm{d}}_{{z}^{2}}$ 通过空间效应形成轨道。这种结构不仅降低了液-固转化(Li 2 S 4到Li 2 S 2 )的能垒,而且还引导Li 2 S 2 /Li 2 S的3D沉积。因此,具有1 wt% CuL电解质添加剂,在10.4 mg cm -2 的高硫负载量和低电解质条件下,可以实现925 mAh
An X-ray photoelectron spectroscopic study of some copper(II) tetraaza complexes
作者:Stephen P. Roe、John O. Hill、John Liesegang
DOI:10.1016/s0277-5387(00)84427-7
日期:1986.1
A selected series of copper(II) tetraazacomplexes, involving open-chain and macrocyclic ligands, has been studied by X-ray photoelectron spectroscopy. The binding energy data obtained are interpreted in terms of the structures of these complexes with particular reference to the existence of π-electron delocalisation over metal and ligand, peripheral ring substituents, cation-anion interaction and
Cyclocondensation of ethylenediamine with acetone and methyl ethyl ketone as a synthetic route to 14-membered azamacrocyclic compounds
作者:N. A. Anisimova、E. I. Khristoforova、Yu. G. Trishin
DOI:10.1134/s1070363215090108
日期:2015.9
14-Membered azamacrocyclic compounds, substituted 1,4,8,11-tetraazacyclotetradeca-4,11-diene and 1,4,8,11-tetraazacyclotetradeca-4,14-diene containing azomethine cycle and amine nitrogen atoms, were obtained as a mixture of trans- and cis-isomers by reacting ethylenediamine with acetone and methyl ethyl ketone. More stable trans-isomers were isolated individually by vacuum distillation.