Recent advances on electrospun nanofiber materials for post-lithium ion batteries

Abstract

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