3D打印非对称微型超级电容器电极结构调控及其电子/离子传输机制研究

微型超级电容器的非对称结构设计可显著提升其储能性能，对推动微电子器件产业的发展具有重要意义。3D打印技术是制备非对称微型超级电容器电极的理想方法，但是其面临的挑战是提高赝电容基电极电子导电性及其可3D打印墨汁制备。因此，本项目拟设计3D打印高电子导电性的双碳层结构石墨烯/过渡金属氧化物（氮化物）/碳纳米管电极并发展其复合材料墨汁制备方法。拟研究墨汁参数与3D打印工艺对电极结构的影响规律及关键控制条件，实现可控结构电极的高效制备。在此基础上，研究电极结构对储能容量、倍率性能、循环稳定性等电化学储能性能的影响规律，揭示电极结构对电子/电解液离子传输的作用机制，为电极结构优化提供依据。本项目预期成果将对3D打印高性能非对称微型超级电容器的设计与制备提供重要的理论依据与技术指导，对其商业化应用及发展具有重要意义。

Asymmetric structural design can significantly improve the energy storage performance of microsupercapacitors (MSCs), which is of great significance to promote the development of the micro-devices industry. 3D printing technology is the ideal method to prepare the electrodes of MSCs, but the challenge is to improve the electrical conductivity of the pseudocapacitive electrodes and the preparation of their 3D printing inks. Therefore, 3D printing double-carbon layer structured graphene/transition metal oxide (nitride)/carbon nanotubes electrodes with high electrical conductivity is designed and the method of preparing its composite ink is developed in this project. We will study the influence of ink parameters and 3D printing technology on the electrode structure and the key control conditions, in order to realize the efficient preparation of the electrode with controllable structure. We will then study the influence of electrode structure on the electrochemical properties such as charge storage capacitance, rate performance and cycling stability, in order to reveal the mechanism of the effect of electrode structures on the transport of electron/electrolyte ions. This will provide a basis for the optimization of electrode structure. The project is expected to provide important theoretical basis and technical guidance for the design and preparation of the 3D printed high-performance asymmetric MSCs, and will be of great significance for their commercial application and development.