Rechargeable lithium anode for polymer electrolyte battery

Details Rechargeable lithium anode for polymer electrolyte battery Rechargeable lithium anode for polymer electrolyte battery

1997-04-23

1999-12-28

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Having means to accommodate electrode expansion

429162, 429306, H01M 1040

Patent

active

060079355

ABSTRACT:
Rechargeable generator consisting of an anode of an alkali metal or a malleable alkali alloy, at least one polymer electrolyte which is conductive with respect to alkali cations and acts as separator, as well as at least one cathode which is reversible to cations of alkali metal and its current collector. The anode comprises a thin metallic sheet, which includes at the surface thereof a passivation film SEI capable of limiting reaction between the metal and the polymer electrolyte and to exchange lithium ions. The polymer electrolyte comprises a homogeneous separator which is capable of transmitting a pressure on the anode to resist against the dendridic strain of the metal of the anode by undergoing a rate of deformation lower than 35% of its thickness. The polymer electrolyte of the separator, contains a maximum amount of species which are reactive towards lithium and which can accumulate at the surface of the anode to permit a preservation of the quality of the ionic exchanges at the interface of the anode and electrolyte and finally, the combination of anode, electrolyte, cathode and collector is maintained under a mechanical strain which is sufficient to ensure that the separator confines the anode sheet in place to preserve the integrity of the lithium-electrolyte interface during consecutive cycles of dissolution/plating.

REFERENCES:
patent: 4517265 (1985-05-01), Belanger et al.
patent: 4652506 (1987-03-01), Belanger et al.
patent: 4794060 (1988-12-01), Belanger et al.
patent: 4897917 (1990-02-01), Gauthier et al.
patent: 5114804 (1992-05-01), Stiles et al.
patent: 5346788 (1994-09-01), Chang et al.
patent: 5418091 (1995-05-01), Gozdz et al.
patent: 5528920 (1996-06-01), Bouchard et al.
patent: 5629107 (1997-05-01), Shioda et al.
patent: 5648187 (1997-07-01), Skotheim
patent: 5770331 (1998-06-01), Olsen et al.
Industrial Chemistry Library, vol. 5, chapter 1, pp. 1-47, (1994), J.R. Dahn, et al., "Carbons and Graphites as Substitutes for the Lithium Anode" (month n.a.).
Second International Symposium on Polymer Electrolytes, Jun. 14-16, 1989, A. Belanger, et al., "Lithium Electrode Behavior in Polymer Electrolyte Cells".
Journal of Power Sources, vol. 54, pp. 163-169, (1995), M. Gauthier, et al., "Large Lithium Polymer Battery Development the Immobile Solvent Concept" (month unknown).

Affiliated with

Also associated with

Rating

Rechargeable lithium anode for polymer electrolyte battery does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rechargeable lithium anode for polymer electrolyte battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rechargeable lithium anode for polymer electrolyte battery will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2381077