Charge Storage and Ion Transport in Non-Crystalline Materials
Abstract
ABSTRACT: The studies described in this proposal concern the synthesis and properties of new electrochemical materials which are designed to possess specific properties that address limitations in lithium-ion and sodium-ion battery performance and capabilities. Three separate research topics are considered. The research on high rate electrode materials is directed at the limitation in obtaining electrode materials which retain high energy density at high charge/discharge rates. The research will focus on amorphous materials as initial results with amorphous VO2 indicate that the Na+ insertion properties of this material reach the high discharge rate properties comparable to those obtained for high rate Li+ insertion materials. The second topic involves research on anion redox processes. This project is directed at anotherlimitation; the low energy density of positive electrode materials for lithium-ion batteries as the prospect of adding anion redox processes to traditional cation redox will lead to an increase in the total amount of charge storage. These studies will focus on amorphous polysulfide systems whose covalency and band structure are expected to lead to more stable anion redox processes.The third area of investigation concerns the multifunctionality of polymer electrolytes. The objective here is to create polymer electrolytes that exhibit ionic conduction and can also be photo-patterned. The principal objective of the research is to greatly improve the ionic conductivity of the polymer without compromising its photo-patterning properties. By bringing photo-patterning processes into the lithium ion battery field, we are leveraging semiconductingprocessing for battery fabrication and design.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 24, 2019
- Source ID
- N000141912113
Entities
People
- Bruce Dunn
Organizations
- Office of Naval Research
- United States Navy
- University of California, Los Angeles