title: Redox Route from Inorganic Precursor Li2C2to Nanopatterned Carbon.
abstract: We present the synthesis route to carbon with hierarchical morphology on the nanoscale. The structures are generated using crystalline orthorhombic lithium carbide (Li2C2) as precursor with nanolamellar organization. Careful treatment by SnI4oxidizes carbon at the fairly low temperature of 80 °C to the elemental state and keeps intact the initial crystallite shape, the internal lamellar texture of particles, and the lamellae stacking. The reaction product is amorphous but displays in the microstructure parallel band-like arrangements with diameters in the range of 200-500 nm. These bands exhibit internal fine structure made up by thin strips of about 60 nm width running inclined with respect to the long axis of the band. The stripes of neighboring columns sometimes meet and give rise to arrow-like arrangements in the microstructure. This is an alternative preparation method of nanostructured carbon from an inorganic precursor by a chemical redox route without applying physical methods such as ion implantation, printing, or ablation. The polymerization reaction of the triple bond of acetylide anions gives rise to a network of carbon sp2species with statistically sized and distributed pores with diameters between 2 and 6 Å resembling zeolite structures. The pores show partially paracrystal-like ordering and may indicate the possible formation of carbon species derived from graphitic foams.
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Paul
authors.identifier: 0000-0003-1115-4024
authors.initials: P
authors.lastname: Simon
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Xian-Juan
authors.initials: XJ
authors.lastname: Feng
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Matej
authors.initials: M
authors.lastname: Bobnar
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Höhn
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Schwarz
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Wilder
authors.initials: W
authors.lastname: Carrillo-Cabrera
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Baitinger
authors.affiliation: Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany.
authors.forename: Yuri
authors.initials: Y
authors.lastname: Grin
keywords: TEM; amorphous carbon; lithium carbide; nanopatterning; pores; redox reaction