CBE Department Seminar - Lynden Archer, Cornell University
Nanoporous Hybrid Electrolytes
Secondary batteries capable of reliably storing and delivering large amounts of electrical energy are key components in various contemporary and emerging technologies, such as electric vehicles, autonomous aircraft and advanced robotics. Batteries based on lithium metal anodes are understood to be among the most promising for achieving high specific electrochemical storage capacities and high cell voltages. Development of practical rechargeable lithium metal batteries (LMBs) remains a challenge, however, due to unstable electro-deposition of lithium and dendrite formation during repeated cycles of charge and discharge.
Using a continuum transport model for lithium deposition in a binary electrolyte, I will show that electrodeposition at the lithium anode in a LMB can be stabilized through rational design of the electrolyte, salt, and anode/electrolyte interface. Building upon these ideas, the talk will explore structure, dynamics and electrochemical properties of novel nanoparticle salts and nanoporous hybrid electrolyte configurations that stabilize the lithium metal anode against dendritic electrodeposition and failure. Finally, I will show that application of these electrolyte/separator designs to full-cell LMBs lead to simple battery configurations that offer enhancements in storage capacity and cell lifetime relative to state-of-the-art lithium ion batteries.
Friday, May 2, 2014 at 10:00am to 11:00am
Colburn Lab, Room 102
University of Delaware- Colburn Lab, University of Delaware, 150 Academy St, Newark, DE 19716-3196, USA
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