An air-stable prelithiation technology for lithium ion-sulfurized polyacrylonitrile battery

Lithium-sulfurized polyacrylonitrile battery is a promising candidate among lithium metal batteries. Nevertheless, the formation of Li dendrites is recognized the worst problem for battery. In this study, we demonstrate an air-stable prelithiation technology for highly reversible Li ion-S@PAN battery. A sandwich-like structure is designed for a lithium–silicon/graphite compound, which not only prevent attack of the lithium surface from humid air, but also improve the lithiation progress more convenient and reliable. When test in Li ion-sulfurized polyacrylonitrile battery, a specific capacity up to 560[Formula: see text]mAh[Formula: see text], and only 24% capacity loss is witnessed after 1500 cycles at 1000[Formula: see text]mA[Formula: see text].