Fiber-reinforced monolithic supercapacitors with interdigitated interfaces
| Autor: | Sakib Hassan, Pulickel M. Ajayan, Fanshu Yuan, Anand B. Puthirath, Hossein Robatjazi, M. A. S. R. Saadi, Muhammad M. Rahman, Devashish Salpekar, Nicholas A. Kotov, Francisco C. Robles Hernandez, Dongping Sun, Soumyabrata Roy, Abhijit Baburaj |
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| Rok vydání: | 2021 |
| Předmět: |
Supercapacitor
Materials science Nanocomposite Renewable Energy Sustainability and the Environment business.industry Delamination Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Energy storage 0104 chemical sciences Stress (mechanics) Nanofiber Distributed generation General Materials Science 0210 nano-technology business Separator (electricity) |
| Zdroj: | Journal of Materials Chemistry A. 9:11033-11041 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | Supercapacitors will serve as essential components of distributed energy storage networks and structural power devices in many emerging technologies. Current supercapacitors are engineered, however, using ‘sandwich’ architecture that undermines their physical integrity under stress and at high temperatures due to delamination. It also limits the successful integration of charge storage and load-bearing functions needed to increase the net stored charge. Bridging the requirement for high mechanical and thermal integrity of supercapacitors as structural energy storage elements is still challenging. Addressing these long-standing problems, we demonstrate here a process of developing structural monolithic supercapacitors (MSCs) where all the components are interdigitated by strong nanofibers synthesized from polyaramid fiber (Kevlar® 49). The monolithic design is realized using a one-step stratified assembly of a graphene–polyaramid nanofiber (PANF) and boron nitride–PANF nanocomposites acting as electrodes and separator, respectively. MSCs demonstrate an optimum combination of mechanical flexibility and robustness, distributing the stress at interfaces and preventing delamination. Also, combination of thermal stability with fast heat dissipation enables MSCs to operate at high temperature (∼100 °C). Hence, we envisage that MSCs could open prospects for their utilization as a structural energy and power system. |
| Databáze: | OpenAIRE |
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