| AVS 59th Annual International Symposium and Exhibition | |
| Energy Frontiers Focus Topic | Thursday Sessions |
| Session EN+NS-ThM |
| Session: | Batteries and Fuel Cells |
| Presenter: | S.L. Biswal, Rice University |
| Authors: | M. Thakur, Rice University R.B. Pernites, Rice University M. Isaacson, Lockheed Martin Space Systems M.S. Wong, Rice University S.L. Sinsabaugh, Lockheed Martin MS2 S.L. Biswal, Rice University |
| Correspondent: | Click to Email |
Silicon continues to draw great interest as an anode material for lithium ion batteries due to its large specific capacity for lithium. Electrochemical etching silicon is one of several anode materials of interest, but its energy density is oftentimes limited due to its attachment to an unreactive silicon substrate. Here, we present a novel “liftoff” method by which a freestanding macroporous silicon film (MPSF) is electrochemically detached from the underlying bulk silicon and combined with pyrolyzed polyacrylonitrile (PAN), a conductive polymer. We report the performance of these silicon thin films with and without pyrolyzed PAN.