Nanostructured graphitic carbon/crystalline transition metal oxide composite using a diblock copolymer as a carbon precursor

PHYS 497

Jinwoo Lee, jl633@cornell.edu1, Morgan Stefik, mms1058@yahoo.com1, Scott C. Warren, scott.warren@epfl.ch2, Francis DiSalvo, fjd3@cornell.edu3, and Ulrich Wiesner, ubw1@cornell.edu2. (1) Materials Science & Engineering, Cornell University, 214 Bard hall, Ithaca, NY 14853-1501, (2) Department of Materials Science and Engineering, Cornell University, 330 Bard Hall, Ithaca, NY 14853-1501, (3) Department of Chemistry, Cornell University, Ithaca, NY 14850
Microphase separation of block copolymers has been intensively studied for patterning functional materials into desired locations. Many transition metal oxides including Co3O4, SnO2, and TiO2 have been considered to be promising electrode material for a high power Li ion battery. In this work, a diblock copolymer was synthesized using sequential anionic and ATRP polymerization. Self-assembly of the designed block copolymer with transition metal oxide sols followed by pyrolysis leads to graphitic carbon/transition metal oxide nanocomposites. These materials are especially promising for lithium ion battery applications and demonstrates a generalizable route for the synthesis of other nanostructured carbon/transition metal oxide composites with designed block copolymers.
 

PHYS Poster Session - Nanostructured Materials and Nanophotonics
7:30 PM-10:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster

Division of Physical Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008