Skip to main content

Lithium Insertion in Polymer-Derived Silicon Oxycarbide Ceramics

Buy Article:

$51.00 plus tax (Refund Policy)


Data for the electrolytic insertion of lithium into polymer-derived silicon oxycarbide ceramics are analyzed in terms of a nanodomain model for these ceramics. The model is constructed from three molecular building blocks: graphene, silicon dioxide tetrahedra, and mixed bond tetrahedra. In mixed bonds, the silicon atom is shared by both oxygen and carbon. The composition regime being considered is bordered by a triangle formed by C, SiO2, and SiC. Mostly, the nonstoichiometric compositions containing “free” carbon are considered. The data fit a phenomenological description where silicon-based mixed bond tetrahedra sequester an equivalent of ∼50 000 mAh/g-atom, while “free carbon” can sequester ∼5000 mAh/g-atom, for the reversible portion of the lithium insertion. The compositions lying close to the SiC–C, and SiC–SiO2 tie lines, however, deviate measurably from this general picture.

Document Type: Research Article


Affiliations: Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, Colorado 80309–0427

Publication date: April 1, 2010


Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more