Super cycling stability of Li-ion battery with 100%-Si@C anode

Silicon (Si) exhibits great potential as an anode material for high-energy-density Li-ion batteries (LIBs). However, its limited cycling performance hinders its large-scale application. Here, we demonstrated that controlling the depth of lithiation of Si@C particles could enhance its reversibility of structure, employing suitable binders could prevent fragmentation of electrodes, and optimizing the full-cell parameters could improve the interface stability. These strategies synergistically contributed to the enhanced cycling performance of 100%-Si@C anode battery with a specific energy density exceeding 380 Wh/kg. This study provides valuable insights into the lithiation mechanism of Si@C anodes and offers guidelines for the future design in developing 100%-Si battery.