Direct coherent multi-ink printing of fabric supercapacitors

• Main Authors: 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
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Materials; 3D Printers; Energy Storage
• Online Access: https://hdl.handle.net/10356/150997
• Institution: Nanyang Technological University

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.