化学结合力载体在锂硫电池中的应用
发布时间：2018-07-27 10:34
【摘要】：在环境问题日益严峻,化石能源日益枯竭的今天,开发具有高比能的二次电池系统显得尤为重要。锂硫电池以其高理论能量密度和低环境影响的优势成为最有潜力的下一代电化学储能系统之一。然而受制于硫的绝缘性质以及由多硫化锂的溶解所引起的穿梭效应,锂硫电池的实用化进程还面临着诸多困难。为弥补常用的碳质载体对稳定硫电极的物理限制作用的不足,近年来对多硫化物具有强烈化学结合作用的载体材料的应用,显著提升了复合硫电极的综合性能,为锂硫电池正极材料的设计提供了新的思路。本文综述了各种具有化学吸附特性的载体材料在复合硫电极中的应用进展,具体包括:基于极性-极性作用固定多硫化物的金属氧化物、改性的碳质材料、能够与硫发生硫化作用的有机聚合物以及对多硫化物具有路易斯酸碱作用的金属有机骨架,重点阐述了这类载体材料与多硫化物的作用机理,并展望锂硫电池的发展方向。
[Abstract]:With the increasingly severe environmental problems and the increasingly exhaustion of fossil energy, the development of two battery systems with high specific energy is particularly important. Lithium sulfur batteries have become one of the most potential next generation electrochemical energy storage systems with their high theoretical energy density and low environmental impact. There are many difficulties in the practical process of lithium sulfur batteries due to the shuttling effect caused by the dissolution of lithium. In order to make up for the deficiency of the physical restriction of the common carbonaceous carrier to the stable sulfur electrode, the application of the carrier material with strong chemical binding effect on the polysulfide in recent years has greatly improved the comprehensive performance of the composite sulfur electrode. A new idea for the design of cathode materials for lithium and sulfur batteries is provided. This article reviews the application progress of various carrier materials with chemical adsorption properties in the composite sulfur electrodes, including the metal oxides, modified carbon materials based on polar polarity and immobilization of polysulfide, and organic polymers that can be vulcanized with sulfur. As well as the organic skeleton of the polysulfide with the action of Lewis acid and alkali, the mechanism of this kind of carrier material and polysulfide is emphatically expounded, and the development direction of the lithium sulfur battery is looked forward.
【作者单位】： 北京理工大学材料学院环境科学与工程北京市重点实验室;北京电动车辆协同创新中心;
【基金】：国家自然科学基金项目(No.51472032,21573017) 国家重点研发计划(No.2016YFB01003) 新世纪优秀人才支持计划(NCET-13-0044) 北京市重点高校重大成果转化项目资助~~
【分类号】：TM912
本文编号：2147548
[Abstract]:With the increasingly severe environmental problems and the increasingly exhaustion of fossil energy, the development of two battery systems with high specific energy is particularly important. Lithium sulfur batteries have become one of the most potential next generation electrochemical energy storage systems with their high theoretical energy density and low environmental impact. There are many difficulties in the practical process of lithium sulfur batteries due to the shuttling effect caused by the dissolution of lithium. In order to make up for the deficiency of the physical restriction of the common carbonaceous carrier to the stable sulfur electrode, the application of the carrier material with strong chemical binding effect on the polysulfide in recent years has greatly improved the comprehensive performance of the composite sulfur electrode. A new idea for the design of cathode materials for lithium and sulfur batteries is provided. This article reviews the application progress of various carrier materials with chemical adsorption properties in the composite sulfur electrodes, including the metal oxides, modified carbon materials based on polar polarity and immobilization of polysulfide, and organic polymers that can be vulcanized with sulfur. As well as the organic skeleton of the polysulfide with the action of Lewis acid and alkali, the mechanism of this kind of carrier material and polysulfide is emphatically expounded, and the development direction of the lithium sulfur battery is looked forward.
【作者单位】： 北京理工大学材料学院环境科学与工程北京市重点实验室;北京电动车辆协同创新中心;
【基金】：国家自然科学基金项目(No.51472032,21573017) 国家重点研发计划(No.2016YFB01003) 新世纪优秀人才支持计划(NCET-13-0044) 北京市重点高校重大成果转化项目资助~~
【分类号】：TM912
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