Review of electro-spun nanofibers electrode materials for electrochemical capacitor

Abstract

In recent years, with the rapid development of the economy, the sustainable use of energy has become a hot topic of discussion. As a new type of energy storage device, supercapacitor has excellent cycling stability and large power density, but its relatively low specific capacitance and low energy density affect its development prospect as an energy storage device. In this background, carbon nanofibers have been widely studied as supercapacitor electrode materials due to their excellent flexibility, large specific surface area, and compatibility. To further design carbon nanofiber electrode materials rationally, this paper provides a comprehensive review of the effects of carbon nanofibers on electrochemical performance in terms of structure improvement, non-metal atom doping, and transition metal oxide loading. Selective and detailed discussions are conducted in each aspect. This review provides an in-depth elucidation of the mechanisms by which these three methods improve the electrochemical performance of supercapacitors. It offers valuable guidance to early researchers and emerging scientists interested in studying or working on supercapacitors.