全固态复合电极微型超级电容器阵列制备及相关机理研究

Micro-supercapacitor plays an important role in the development of portable electronic devices due to its large energy density, high power density, short charge/discharge time, long cycling life-time, and excellent cycling efficiency and so on. In our project, we design and fabricate laser-scribed graphene and its composite films as electrodes by modified laser-scribed method based on the properties of graphene. Based on the gel-electrolyte by sol-gel method and as-prepared LSG and its compound electrode, the micro-supercapacitor unit device is assembled, and its electrochemical properties and storage energy mechanism are also researched. Furthermore, the prepared micro-supercapacitors are arrayed based on the theories of series-parallel of the plane capacitors, and its storage energy performance and electrochemical characters are investigated as well, the achievements of this project will theoretically and technologically lay solid foundation for the development of the miniaturized energy storage devices.

微型超级电容器由于体积小、便于集成化、功率密度高、充放电速率快、绿色环保、免维护等特点而使其在便携式电子设备中作为储能单元引起了人们的广泛关注。本项目针对微型超级电容器器件，基于石墨烯及其复合材料其优异的电学、电化学性质，利用改进的激光雕刻工艺，把氧化石墨烯（GO）还原成光雕石墨烯（LSG），进而制备出图形化的兼具高能量密度、高功率密度和循环稳定性好的LSG及其复合薄膜电极。同时制备PVA基水系与离子型凝胶电解质，与LSG及其复合薄膜电极进行匹配，组装成柔性全固态微型超级电容器单元器件，并对其电化学性能及储能机理进行分析研究。基于平板电容器的串并联理论，构建微型超级电容器阵列结构，对阵列化微型器件的电化学行为和储能机理展开深入研究，为微型储能器件的发展奠定理论和技术基础。

微型超级电容器具有体积小、便于集成化、功率密度高、充放电速率快、绿色环保、免维护等特点，将其应用便携式电子设备中作为储能单元引起了人们的广泛关注。本项目基于石墨烯及其复合材料其优异的电学、电化学性质，利用改进的激光雕刻工艺，把氧化石墨烯（GO）还原成光雕石墨烯（LSG），进而制备出图形化的兼具高能量密度、高功率密度和循环稳定性好的LSG及其复合薄膜电极；同时制备PVA基水系与离子型凝胶电解质，与LSG及其复合薄膜电极进行匹配，组装成柔性全固态微型超级电容器器件，并对其电化学性能及储能机理进行分析研究。进一步地，基于平板电容器的串并联理论，构建了微型超级电容器阵列结构，对阵列化微型器件的电化学行为和储能机理展开深入研究，为微型储能器件的发展奠定理论和技术基础。