3D打印MXene气凝胶基微型超级电容器技术与材料研究进展

微型超级电容器(Micro-supercapacitors,MSCs)作为便携、可穿戴、可植入的微型能量存储单元,因高功率密度、瞬间充放电及长循环寿命的优势,在柔性微型电化学储能技术中取得了快速发展。MXene基气凝胶材料因其三维多孔网状结构、优越导电性、亲水性等优势,能够缩短离子传输路径与提高电荷转移效率,在构建柔性MSCs中发挥重要作用,如活性电极材料、柔性导电集流体、油墨印刷等。然而,开发低价、高效、高性能的柔性MSCs器件仍面临诸多挑战。三维(3D)打印能够构建几何形状复杂的3D结构,制造不同尺寸和形状的微型储能器件。为了优化其电化学性能,分别对3D打印技术分类及其最新进展、可打印MXenes材料的设计原理研究进行了综述,总结了它们在与可穿戴电子设备集成MSCs设备中的应用。并对MXenes材料在解决3D打印MSCs的挑战性问题与发展前景做出展望。

Three-dimensional Printing MXenes Aerogel for Micro-supercapacitors: Technology and Materials

Portable micro-supercapacitors (MSCs) have rapidly developed in flexible micro-electrochemical energy-storage technology due to high power density, instantaneous charge-discharge rate, and long-time durability. MXene-based aerogel plays an important role in flexible MSCs because of porous network structure, superior electric conductivity, ink printing and short ion-transport pathways. However, flexible MSCs devices still faces many challenges in effective and high-performance. Three-dimensional (3D) printing enables geometrically complex 3D structures for MSCs devices with different sizes and shapes. In order to improve electrochemical performance, we have reviewed 3D printing technology, progress, and design principles. In addition, we have summarized the applications in MSCs integrated with wearable electronic devices. Finally, we proposed the challenge and prospects for the 3D printing MSCs based on MXene aerogels.