Li Yuzhou, Zhang Yufan, Zhang Haoran, Xing Tie-Ling, Chen Guo-Qiang
College of Textile and Clothing Engineering, Soochow University Suzhou 215021 China
RSC Adv. 2019 Jan 31;9(8):4180-4189. doi: 10.1039/c9ra00171a. eCollection 2019 Jan 30.
In recent years, the energy supply problem of wearable electronic equipment has become a topic of increasing concern. It is necessary to develop energy storage equipment with environmental protection, flexibility, a light quality and excellent performance. In this work, a solid, flexible and symmetrical supercapacitor based on graphene coated cotton fabric was fabricated. The flexible electrode materials were prepared through an environmentally friendly "dry-coating" method and subsequent "two step reduction" method of chemical and microwave reduction, the method is simple and convenient. The morphology and structure of prepared flexible electrode materials were characterized by scanning electron microscopy, X-ray diffraction, and Raman spectrometry. The supercapacitor was assembled in a sandwich structure and packaged and its electrochemical performance was investigated. The flexible sandwich structure (FSS) supercapacitor exhibits high capacitance (464 F g at 0.25 A g), good cycling stability (91.6% capacitance retention after 1000 charge and discharge cycles) and excellent electrochemical stability. This supercapacitor with easy fabrication, flexible and excellent electrochemical performance has potential to be used as a wearable device.
近年来，可穿戴电子设备的能源供应问题已成为一个日益受到关注的话题。开发具有环保、柔韧性、轻质和优异性能的储能设备很有必要。在这项工作中，制备了一种基于石墨烯包覆棉织物的固态、柔性对称超级电容器。通过环保的“干涂覆”方法以及随后的化学和微波还原“两步还原”方法制备柔性电极材料，该方法简单方便。采用扫描电子显微镜、X射线衍射和拉曼光谱对制备的柔性电极材料的形貌和结构进行了表征。将超级电容器组装成三明治结构并进行封装，研究其电化学性能。柔性三明治结构（FSS）超级电容器表现出高电容（在0.25 A g时为464 F g）、良好的循环稳定性（1000次充放电循环后电容保持率为91.6%）和优异的电化学稳定性。这种易于制备、柔性且具有优异电化学性能的超级电容器有潜力用作可穿戴设备。
