“…Nanostructured Si materials afford promising opportunities to address all of these challenges because of their ability to relax strain. In addition, chemically synthesized Si nanostructures, including nanowires, 3,24 nanocrystals, 25 core−shell nanofibers, 26,27 nanotubes, 6,28 nanospheres, 29,30 nanoporous materials, 31,32 and Si/carbon nanocomposites, 5,33 have demonstrated superior performance compared to bulk Si. Moreover, the Si nanostructures have addressed the issue of separation from the current collector, resulting in significant improvements of electrochemical cycling up to hundreds of cycles.…”