Optimized, Safe, Ultra high energy density Na-CFx and Li-CFx primary/secondary batteries via the use
Abstract
Abstract Approved for Public Release This work is focused on creating high performance ultra-high energy density primary and seconda,ry Li-CFx and Na-CFx batteries for Naval operations that are capable of sustained functionality in a wide temperature range with sig,nificantly increased safety. We will study and develop this new class of batteries via the use of sub-fluorinated carbons combined, with a novel class of electrolytes that rely on deep eutectic solvents, which can be much safer to implement compared to the curren,t state of the art. They will have high specific capacities, over 600 Wh/kg, which are beyond what has been demonstrated today (whi,ch are in the 100 to 400 Wh/kg range) and a thermal operational window potentially in the range of -60C to 80C. -- We first will f,ocus on combining previously demonstrated (by the PI) sub-fluorinated Li - CFx primary battery chemistry with novel optimized eutect,ic electrolyte combinations based on low or non-flammable salt and solvent combinations. Additionally, it has recently been shown t,hat sodium can reversibly charge/discharge with a CFx cathode materials system; we will therefore seek to implement our eutectic ele,ctrolyte with this chemistry as to create an ultra-high energy density safe secondary Na-CFx battery. Once these early efforts are, completed, we will create practical prototype cells in the form for multi-Ah pouch packages that are designed to demonstrate that o,ne of more of the chemistries under examination are able to achieve the desired performance metrics. As such, we are addressing sev,eral of the stated interests of the NEPTUNE program, including next generation Na-ion batteries, high energy density energy storage,, and increased safety energy storage technologies.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 16, 2022
- Source ID
- N000142212093
Entities
People
- Jay F Whitacre
Organizations
- Carnegie Mellon University
- Office of Naval Research
- United States Navy