聚合物自由基化及其复合纳米碳构筑电极材料研究

Novel polymeric electrode materials manufactured by radical polymers can provide more advantages in better safety, durability and comfortability, and also play an important role in the domain of new energies. Thus how to synthesize radical polymers and produce their flexible electrodes has been highlighted. Aim at low molecular weights, the poor electrochemical stability, the unknown of the relation between structure morphology and properties of radical polymers prepared by monomers with radicals and double bonds due to the steric hindrance, and the use of toxic solvents and binders in the traditional preparation methods of radical polymer electrode materials. In this project, we use currently available polymers with reactive groups as object of study. The radicals would graft into the main chain of polymers through esterification reaction between radicals and reactive groups of polymers to achieve the radicalization of polymers. The composite electrode materials building by radicalization polymer/carbon nano-composites with co-continuous phase morphologies will be manufactured by melting method. The fundamental scientific problems and key technologies in the radicalization of polymer as well as in the building flexible energy storage devices by composite electrode materials with co-continuous phase morphologies will be investigated. The relationship of the physicochemical performance of radical polymers and structure morphologies with the first-, second- and multi-level will be revealed. This work will provide important theoretical foundation and technical support for the synthesis and design, development of radical polymer/carbon nano-composite materials and their application in energy storage devices.

自由基聚合物构筑新型聚合物基电极材料具有更高安全性、耐用性乃至穿着性等特点，可在新能源领域发挥重要作用，如何合成自由基聚合物和制备柔性电极目前是研究热点。针对带自由基双键单体空间位阻大聚合所得自由基聚合物分子量低、电化学稳定性差、结构形态与性能关系未涉及、自由基聚合物电极材料制备方法传统化使用有毒溶剂和粘结剂等问题，本项目以带可反应基团的现有聚合物为研究对象，通过聚合物反应基团与自由基间酯化反应将自由基接枝到聚合物主链，实现聚合物自由基化；采用熔融方法制备该自由基聚合物/碳纳米导体共连续相结构复合电极材料，重点研究聚合物自由基化和共连续相结构复合电极材料用于构筑可形变储能器件的基础科学问题和关键技术，阐明自由基聚合物一级、二级和多级结构与电学、力学和其他物理化学性能的关系规律，为新型自由基聚合物的设计合成、自由基聚合物/碳纳米复合材料的开发及其在储能器件中应用提供重要的理论依据与技术支持。

自由基聚合物构筑新型聚合物基电极材料具有更高安全性、耐用性乃至穿着性等特点，可 在新能源领域发挥重要作用，如何合成自由基聚合物和制备柔性电极目前是研究热点。针对带自由基双键单体空间位阻大聚合所得自由基聚合物分子量低、电化学稳定性差、结构形态与性能关系未涉及、自由基聚合物电极材料制备方法传统化使用有毒溶剂和粘结剂等问题，本项目以带可反应基团的现有聚合物为研究对象，通过聚合物反应简便合成了自由基共聚物为新型粘结剂，阐明自由基聚合物一级、二级和多级结构与电学、力学和其他物理化学性能的关系规律。项目还提出简便合成高导电硫/碳复合物策略，利用组分间自组装行为与界面作用调控结构制备高导电耐形变复合材料，通过组分均质化构筑了高能量密度耐形变储能电极材料。因此，本项目为新型自由基聚合物的设计合成、自由基聚合物/碳纳米复合材料的开发及其在储能器件中应用提供重要的理论依据与技术支持。目前，本项目已经申请发明专利公开4件，在有影响力的国际重要学术期刊Energy and Environmental Science (IF= 33.250)、Journal of Materials Chemistry A (2篇，其中1篇为封面文章，10.733)、Macromolecular Rapid Communications（IF= 4.078）和Macromolecular Chemistry and Physics (IF= 2.33)发表论文5篇，培养在读博士生毕业3名，硕士生2名。