高导电性氮杂芳烃正极材料

本项目选择以掺杂有氮氧硫等元素的共轭单元构建的高导电性有机半导体为研究对象，以获得具有优异性能的若干锂离子电池有机正极材料为目标；重点以含多羰基的醌/酮/酰亚胺等单元的有机半导体/高分子材料为研究体系；采用合成产率高、操作简单的C-H活化、Szuzuki、Ullmann等Pd、Cu过渡金属催化偶联方法作为醌式共轭有机正极材料的合成与制备方法；采用模板法等做为新型富羰基类有机正极材料微纳结构形貌构建、优化和调控的方法；以电镜、XPS、元素分析、ICP、拉曼光谱、锂离子电池测试系统等现代仪器分别做为新材料结构表征与锂离子存储性能的测试方法；解决并阐明共轭骨架-羰基等活性位点种类/含量、羰基-共轭骨架间距、微纳形貌与其储锂性能之间的规律性关系；筛选出具有优异储锂性能以及应用前景的低成本多羰基醌式共轭有机/导电高分子类锂离子电池正极材料。

In order to explore several high-performance cathode materials for lithium ion batteries, this project takes a series of novel highly carbonyl-riched organic semiconductors/conductive polymers as the research objects which are prepared fromπ-conjugated precursors-a kind of large π-extended polyaromatics with pre-embedded carbonyl groups. The key research system emphasizes specially on the novel semiconductors, conductive polymers from the ketone/quinone/aromatic imide precursors.. This project also takes facile synthetic methods including Pd, Cu transition metals catalysed C-H direct arylation, Suzuki, and Ullmann coupling methods from cheap commercial available starting materials with the advantages of high synthesis yield and facile procedure. The classic pre-template and other approaches are applied to construct and optimize novel carbonyl-riched cathodic organic materials with well-defined nanostructures and micro-morphologies. Lots of modern equipments including various electromicroscopes, elemental analysis, ICP,.Raman, X-ray photoelectron spectroscopy, testing system of lithium ion battery and so on, are carried out to measure and characterize the properties and the performance of new carbonyl-riched cathodic organic materials for lithium ion storage. The principle multi-relationships between kinds/numbers of carbonyl/conjugated frameworks, branched distances of carbonyl and conjugated frameworks, micro-, nano-structures of the new carbonyl-riched cathode materials and their comprehensive/specific performance for lithium ion storage will be.systematically illustrated and disclosed. Thereafter, several novel organic semiconductors/conductive polymers with high carbonyl-ratios and brilliant lithium ion storage performance will be selected as the potential applicable organic cathode candidates for high performance lithium.ion batteries.