Zhao Jingxin, Lu Hongyu, Zhang Yan, Yu Shixiong, Malyi Oleksandr I, Zhao Xiaoxin, Wang Litong, Wang Huibo, Peng Jianhong, Li Xifei, Zhang Yanyan, Chen Shi, Pan Hui, Xing Guichuan, Lu Conghua, Tang Yuxin, Chen Xiaodong
Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau SAR 999078, P. R. China.
Institute of Advanced Electrochemical Energy, Xi'an University of Technology, Xi'an 710048, P. R. China.
Sci Adv. 2021 Jan 15;7(3). doi: 10.1126/sciadv.abd6978. Print 2021 Jan.
Coaxial fiber-shaped supercapacitors with short charge carrier diffusion paths are highly desirable as high-performance energy storage devices for wearable electronics. However, the traditional approaches based on the multistep fabrication processes for constructing the fiber-shaped energy device still encounter persistent restrictions in fabrication procedure, scalability, and mechanical durability. To overcome this critical challenge, an all-in-one coaxial fiber-shaped asymmetric supercapacitor (FASC) device is realized by a direct coherent multi-ink writing three-dimensional printing technology via designing the internal structure of the coaxial needles and regulating the rheological property and the feed rates of the multi-ink. Benefitting from the compact coaxial structure, the FASC device delivers a superior areal energy/power density at a high mass loading, and outstanding mechanical stability. As a conceptual exhibition for system integration, the FASC device is integrated with mechanical units and pressure sensor to realize high-performance self-powered mechanical devices and monitoring systems, respectively.
具有短电荷载流子扩散路径的同轴纤维状超级电容器作为可穿戴电子产品的高性能储能器件备受青睐。然而，基于多步制造工艺来构建纤维状能量装置的传统方法在制造工艺、可扩展性和机械耐久性方面仍然面临持续的限制。为了克服这一关键挑战，通过设计同轴针的内部结构并调节多墨水的流变性能和进料速率，利用直接相干多墨水书写三维打印技术实现了一体化同轴纤维状不对称超级电容器（FASC）装置。得益于紧凑的同轴结构，FASC装置在高质量负载下具有优异的面积能量/功率密度以及出色的机械稳定性。作为系统集成的概念展示，FASC装置分别与机械单元和压力传感器集成，以实现高性能的自供电机械设备和监测系统。
