Rapid charge and discharge and high energy density are important characteristics for rechargeable battery technologies.  There is always a trade-off between energy and power density due to ohmic and other losses that occur when a battery is cycled rapidly, however, by efficient design of the ion and electron transport pathways, we and others have shown it is possible to improve the power-energy relationship.  We have found a particularly effective way to provide these pathways is to use a colloidal-based template to form a mesostructured 3D current collector.  The electrochemically active material is then deposited on this current collector.  The combination of a high surface area and short solid-sate diffusion lengths offers a number of unique opportunities for both high energy and high power chemistries.  As examples, we have formed high power cells based on a lithiated manganese oxide cathode, and high energy cells based on a silicon anode.

High power and energy secondary batteries based on colloidally templated mesoscale current collectors

246th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.