Article pubs.acs.org/cm
Lithium Charge Storage Mechanisms of Cross-Linked Triazine Networks and Their Porous Carbon Derivatives Kimberly A. See,†,‡ Stephan Hug,§,#,⊥ Katharina Schwinghammer,§,#,⊥ Margaret A. Lumley,‡,∥ Yonghao Zheng,∇ Jaya M. Nolt,∥ Galen D. Stucky,†,‡,∇ Fred Wudl,∇ Bettina V. Lotsch,*,§,#,⊥ and Ram Seshadri*,†,‡,∥,∇ †
Mitsubishi Chemical − Center for Advanced Materials, ‡Department of Chemistry and Biochemistry, ∥Materials Research Laboratory, and ∇Materials Department, University of California, Santa Barbara, California 93106, United States ⊥ Nanosystems Initiative Munich and Center for Nanoscience, Schellingstr. 4, 80799 München, Germany § Department Chemie, Ludwig-Maximilans-Universität München, Butenandtstr. 5-13, 81377 München, Germany # Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany S Supporting Information *
ABSTRACT: Redox active electrode materials derived from organic precursors are of interest for use as alternative cathodes in Li batteries due to the potential for their sustainable production from renewable resources. Here, a series of organic networks that either contain triazine units or are derived from triazine-containing precursors are evaluated as cathodes versus Li metal anodes as possible active materials in Li batteries. The role of the molecular structure on the electrochemical performance is studied by comparing several materials prepared across a range of conditions allowing control over functionality and long-range order. Well-defined structures in which the triazine unit persists in the final material exhibit very low capacities at voltages relevant for cathode materials (
