大面积有序MnO2复合纳米材料的电化学可控合成及其柔性储能器件研究

电极材料是决定超级电容器性能的最重要因素之一，如何寻找和开发具有高比电容、高稳定性、高能量及功率密度的电极材料是目前储能研究领域的热点和难点。本项目针对新型高效能源转换与储存材料的分子设计及新型制备技术，提出以商用的碳布或自制备的导电聚合物和多孔碳薄膜作为柔性导电基体，利用电沉积方法设备需求简单、反应条件温和、形貌、结构与成分易于调控的特点；在绿色的水溶液体系中，系统深入地研究大面积有序MnO2复合电极材料的电化学可控合成及其界面协同机制和化学能/电能转换与存储的机理，并对柔性储能器件进行构建和组装，以期研制和组装出以MnO2复合材料为电极的高性能全固态柔性电容器，总结和归纳MnO2全固态电容器的构造与储能机理之间的内在规律；旨在实现高效、稳定储能材料的理性设计与可控合成，为揭示储能材料与器件中的结构与界面规律和化学能/电能转换与存储的基本过程与原理提供重要的理论与实验依据。

The performance of electrode materials is one of the most importance factors for supercapacitors. How to obtain high-performance electrode materials with high specific capacitance, long-term stability, and high power and energy densities via a large-scale and low-cost synthesis method has attracted considerable attention and still is a huge challenge in this filed. Electrochemical deposition has been recognized as a promising method to prepare the electrode nanomaterials because of its simplicity, ease of scale-up, low cost, and environmental friendliness. To develop the novel and high efficient energy conversion/storage materials, in this project, we will focus on the design and large-scale synthesis of porous MnO2-based composite nanoarrays on flexible commercial carbon cloth, self-made conductive polymer films or porous carbon thin films by electrodeposition from green aqueous solution and investigate their electrochemical properties and applications in all solid-state supercapacitors. The work proposed here specifically seeks to (1) elucidate the interface electrochemical behavior and mechanism of the energy conversion/storage materials; (2) realize the reasonable design and controllable synthesis of high-performance MnO2 based composite nanoarrays with excellent long-term stability; (3) fabricate high-performance all solid-state supercapacitors by using these as-synthesized MnO2 based composite nanoarrays. We are sure that this project will provide a new insight to the relationship between electrode materials and devices, but also provide important theory and experimental evidences on the conversion between chemical energy and electrical energy.