Nanocrystalline Iron Oxides Prepared via Co-Precipitation for Lithium Battery Cathode Applications
Some metal oxides adopt close-packed coordination environments, which optimize ion density. However, ion and electron transfer are challenges which may or may not be exacerbated as a result of high ion density. An emerging paradigm for the implementation of close-packed materials in higher current applications is the tuning of the materials crystallite dimensions, where the reduction of crystallite size should minimize the path length for ion transport upon discharge, resulting in a reduction of both internal cell resistance and the resultant structural strain associated with lithium insertion. Significant improvements in current capability of metal oxides and their composites via direct crystallite size control and other strategies will be described.
The synthetic approaches described in this presentation will provide new strategies which may be applicable toward development of other new classes of materials and composites with energy or energy storage applications.