title: Probing the lithium ion storage properties of positively and negatively carved silicon.
abstract: Here, we report Si pillar and well arrays as tailored electrode materials for advanced Li ion storage devices. The well-ordered and periodic morphologies were formed on a Si electrode thin film via laser interference lithography followed by a dry etch process. Two different patterns of negatively or positively carved Si electrodes exhibited highly improved cycle performance as a consequence of the enlarged surface area and the nanoscale pattern effects. The Si well arrays showed the highest energy density, rate capability, and cycling retention among the prepared Si electrodes. This tailored electrode platform demonstrates that these design principles could be applied to future developments in Si electrodes.
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea.
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Nam
authors.forename: Ki Seok
authors.initials: KS
authors.lastname: Kim
authors.forename: Hee-Sang
authors.initials: HS
authors.lastname: Shim
authors.forename: Sang Ho
authors.initials: SH
authors.lastname: Lee
authors.forename: Gun Young
authors.initials: GY
authors.lastname: Jung
authors.forename: Won
authors.initials: W
authors.lastname: Bae Kim