Ratnakumar V. Bugga - Arcadia CA Salvador Distefano - Alhambra CA Ganesan Nagasubramanian - La Crescenta CA Clyde P. Bankston - Studio City CA
Assignee:
The United States of America as represented by the Administrator, National Aeronautics and Space Administration - Washington DC
International Classification:
H01M 620
US Classification:
429103
Abstract:
Higher energy and power densities are achieved in a secondary battery based on molten sodium and a solid, ceramic separator such as a beta alumina and a molten catholyte such as sodium tetrachloroaluminate and a copper chloride cathode. The higher cell voltage of copper chloride provides higher energy densities and the higher power densities result from increased conductivity resulting from formation of copper as discharge proceeds.
Method For Forming Thin Composite Solid Electrolyte Film For Lithium Batteries
Ganesan Nagasubramanian - Albuquerque NM Alan I. Attia - Needham MA
International Classification:
H01M 404
US Classification:
296235
Abstract:
A composite solid electrolyte film is formed by dissolving a lithium salt such as lithium iodide in a mixture of a first solvent which is a cosolvent for the lithium salt and a binder polymer such as polyethylene oxide and a second solvent which is a solvent for the binder polymer and has poor solubility for the lithium salt. Reinforcing filler such as alumina particles are then added to form a suspension followed by the slow addition of binder polymer. The binder polymer does not agglomerate the alumina particles. The suspension is cast into a uniform film.
Silicon Containing Electroconductive Polymers And Structures Made Therefrom
Ganesan Nagasubramanian - La Crescenta CA Salvador DiStefano - Alhambra CA Ranty H. Liang - Arcadia CA
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
H01B 100
US Classification:
526258
Abstract:
An electropolymerized film comprised of polymers and copolymers of a monomer having the general formula: ##STR1## is formed on the surface of an anode. The finished structures have superior electrical and mechanical properties for use in applications such as electrostatic dissipation and for the reduction of the radar cross section of advanced aircraft.
Thin Composite Solid Electrolyte Film For Lithium Batteries
Emmanuel Peled - Even Yehuda, IL Ganesan Nagasubramanian - La Crescenta CA Gerald Halpert - Pasadena CA Alan I. Attia - Needham MA
Assignee:
The United States of America as represented by the National Aeronautics and Space Administration - Washington DC
International Classification:
H01M 618
US Classification:
429191
Abstract:
A composite solid electrolyte film for a lithium battery comprising a dispersion of small reinforcing particles such as alumina in a binder rein such as polyethylene oxide. The particles are coated with a compatible lithium salt such as lithium iodide and the alumina particles preferably have a size below 0. 5 microns.
Secondary Li Battery Incorporating 12-Crown-4 Ether
Ganesan Nagasubramanian - La Crescenta CA Salvador DiStefano - Alhambra CA
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
H01M 1040
US Classification:
429192
Abstract:
The conductivity is increased an order of magnitude and interfacial charge transfer resistance is substantially decreased by incorporating a minor amount of 12-Crown-4 ether in a polyethylene oxide-lithium salt solid electrolyte film.
Cyanoethylated Compounds As Additives In Lithium/Lithium Batteries
The United States of America as represented by the United States Department of Energy - Washington DC
International Classification:
H01M 458
US Classification:
42923195
Abstract:
The power loss of lithium/lithium ion battery cells is significantly reduced, especially at low temperatures, when about 1% by weight of an additive is incorporated in the electrolyte layer of the cells. The usable additives are organic solvent soluble cyanoethylated polysaccharides and poly(vinyl alcohol). The power loss decrease results primarily from the decrease in the charge transfer resistance at the interface between the electrolyte and the cathode.
Cast Thermal Battery Electrodes And Separators Using A Salt Binder
- Albuquerque NM, US Ganesan Nagasubramanian - Albuquerque NM, US Christopher A. Apblett - Albuquerque NM, US
International Classification:
H01M 4/08 H01M 6/36 H01M 4/04 H01M 2/14 H01M 4/62
Abstract:
Cast components can improve the effectiveness of current state-of-the-art in thermal battery processing technology in terms of cost, labor, materials usage, and flexibility. Cast components can include cast cathodes, anodes, and separators.
Organosilicon-Based Electrolytes For Long-Life Lithium Primary Batteries
- Albuquerque NM, US Ganesan Nagasubramanian - Albuquerque NM, US Chad Staiger - Albuquerque NM, US Harry Pratt - Albuquerque NM, US Kevin Leung - Albuquerque NM, US Susan Rempe - Albuquerque NM, US Mangesh Chaudhari - Albuquerque NM, US Travis Mark Anderson - Albuquerque NM, US
Organosilicon electrolytes exhibit several important properties for use in lithium carbon monofluoride batteries, including high conductivity/low viscosity and thermal/electrochemical stability. Conjugation of an anion binding agent to the siloxane backbone of an organosilicon electrolyte creates a bi-functional electrolyte. The bi-functionality of the electrolyte is due to the ability of the conjugated polyethylene oxide moieties of the siloxane backbone to solvate lithium and thus control the ionic conductivity within the electrolyte, and the anion binding agent to bind the fluoride anion and thus facilitate lithium fluoride dissolution and preserve the porous structure of the carbon monofluoride cathode. The ability to control both the electrolyte conductivity and the electrode morphology/properties simultaneously can improve lithium electrolyte operation.