Solution Processed Nanomaterials for Energy and Next Generation Devices

Department Colloquium

In this talk, we examine ways that solution processed nanostructured materials can be used to address both fundamental and practical issues relevant to next generation technology.  We begin with nanoporous materials for electrochemical energy storage.  Materials with appropriate porous architectures can be synthesized using either block-copolymer templating methods or using selective solution phase dealloying of mixed metal solid-state precursors.  The resulting nanoporous materials can form the basis for high power electrochemical energy storage materials known as pseudocapacitors.  In such materials, the nanoscale porosity can produce a very desirable combination of electrical connectivity, electrolyte access to the interior of the material, ample surface redox sites, and very short solid-state diffusion lengths for lithium ions.  With idealized architectures and bonding geometries, a unique combination of high energy density and high power density can be achieved, in some case combined with reactivity toward ions other than Li+.  Related systems also show promise for chemical energy storage in the form of electro-catalytic water splitting.  If time permits, we will also consider work on magnetoelectric materials, in which an applied electric field can be used to modify the magnetic state of system.  The work focuses on building magnetic nanocrystals into functioning devices.

 

Division(s): Materials

Speaker: Sarah Tolbert

Speaker Institution: UCLA

Event Date: 03-03-2017

Event Time: 4:00 PM

Event Location: Chemistry A101

Mixer Time: 3:45 PM

Mixer Location: Chemistry B101E

Host: N. Levinger