Recent Advances on Electrospun Nanofiber Materials for Post-lithium Ion Batteries

Lithium ion batteries (LIBs) have dominated the portable electric market over decades; however, the limited and unevenly distributed lithium resources induce concerns on their future large-scale applications. Increasing efforts have been endeavored on exploring post-Li ion batteries, such as Na-ion, K-ion, Al-ion and Mg-ion batteries, due to the high abundance of the corresponding elements in Earth crust. Manufacturing reliable electrode materials is the key to develop these new battery systems. Facile and scalable electrospinning has been widely utilized in preparing mechanically stable, flexible and conductive nanofiber electrodes as successfully proven in LIBs. In recent years, tremendous efforts have been devoted to electrospinning nanofiber electrodes for post-Li ion batteries and discernible progress in the electrochemical performance has been witnessed. Herein, we aim to review the-state-of-the-art advances made in electrospun nanofiber materials in optimizing post-Li ion battery technology by surveying the correlations among the morphology, the surface chemistry, the structure of electrospun nanofibers, and the post-Li ion batteries performance. Based on intensive investigations and insightful understandings, perspectives to the future design of electrospun nanofiber electrodes are also presented.