One-dimensional nanostructured electrode materials based on electrospinning technology for supercapacitors
Pei ZhiFan,Cheng WeiYe,LanXu*
National Engineering Laboratory for Modern Silk, College of Textile and Engineering, Soochow University, Suzhou 215123, China
Supercapacitorsare outstanding electrochemicalenergy storage deviceswith high power density, quick charge and discharge and long cycle life. A well-designed structure can significantly increase itselectrochemical performanceas electrode materials.Carbon nanofibers(CNFs) made byelectrospinning techniquefeature a one-dimensionalnanostructure, which can provide directionalelectron transferpathways and reduce the internal resistance of materials. This article reviewed the design approaches for one-dimensional nanostructured electrode materials produced from CNFs for supercapacitors, focusing onporous structuredesign, hollow structure design, surface functional group structure design and core-shell structure design. The porous and hollow structural designs could improve the contact area between electrode and electrolyte, allowing for faster electron/ion transport. Surface functional group structure design had the potential to improve the surface chemical properties of electrode materials, therefore enhancing their capacitance characteristics. The core-shell structure design might result in layered channels, and the diverse components of the core and shell could work together to increase theconductivityand structural stability of electrode materials. The preparation methods and structural properties of these CNF electrode materials with different structural designs were highlighted, as well as their future development.
Volume 134, April 2023, 109803
https://doi.org/10.1016/j.diamond.2023.109803