Loading patent…
AssigneeSaes Getters S.P.A.
InventorsLuca TOIA, Johnny MIO BERTOLO, Giorgio LONGONI, Marco AMIOTTI
Estimating the term…
Rechargeable lithium batteries are described comprising an airtight container, electrodes immersed in an electrolytic solution and spaced apart by means of one or more separators, electrical contacts connected to the electrodes and a means for sorbing harmful substances formed of a multilayer polymeric sheet comprised of an inner layer of a polymeric material containing particles of one or more getter materials for the sorption of the harmful substances, and at least one external protective layer of a polymeric material impermeable to the electrolyte, wherein all the polymeric materials are permeable to the harmful substances.
A rechargeable lithium battery comprising
(canceled)
The rechargeable lithium battery according to claim 34, wherein said particles of one or more getter materials have a size lower than 150 μm.
(canceled)
The rechargeable lithium battery according to claim 34, wherein said at least one external protective layer and said inner layer are made of a material chosen between polyolefins and fluorinated polymers.
The rechargeable lithium battery according to claim 34, wherein said inner layer is made of ethyl-vinyl-acetate or polyesters.
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise H2O and said getter material comprises one or more of the following compounds:
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise CO2 and said getter material comprises one or more of carbon molecular sieves (CMS), hydroxides of alkaline or alkaline-earth metals or lithium salts identified by the formula LiXOy, with X chosen among zirconium, iron, nickel, titanium, silicon and y comprised between 2 and 4, Metal Organic Framework modified by addition of basic functional groups.
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise CO and said getter material comprises one or more of the following compounds:
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise saturated and unsaturated hydrocarbons and said getter material comprises one or more of carbon nanotubes, active carbons having a large surface area and oxidizing compounds.
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise O2 and said getter material comprises one or more of ternary alloys among zirconium, vanadium and iron, ternary alloys among zirconium, cobalt and rare earths, and reduced or partially reduced metals or metal oxides.
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise HF and said getter material comprises oxides.
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise hydrogen in the a gaseous phase and said getter material comprises non-evaporable getter alloys.
A The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise hydrogen in a gaseous phase and said getter material comprises unsaturated organic compounds.
The rechargeable lithium battery according to claim 34, wherein said harmful substances comprise hydrogen in a gaseous phase and said getter material comprises one or more of palladium oxide, cobalt oxide, zirconium-vanadium-iron ternary alloys, and zirconium-cobalt-rare earths ternary alloys.
The rechargeable lithium battery according to claim 34, wherein thickness of said at least one external protective layer is comprised between 1 and 50 μm.
The rechargeable lithium battery according to claim 34, wherein said inner layer of polymeric material containing a getter material has a thickness comprised between 5 and 200 μm.
A rechargeable lithium battery comprising
Dependencies are inferred from the claim text.