Radiation cured solid electrolytes and electrochemical devices employing the same
AssigneeMHB Joint Venture
InventorsMei-Tsu Lee, Dale R. Shackle, Gerhart Schwab
Life of this patent
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Abstract
A method for forming an interpenetrating polymeric network containing a liquid electrolyte for use in solid state electrochemical cells which comprises forming a mixture of a liquid monomeric or prepolymeric radiation polymerizable, compound, a radiation inert ionically conducting liquid, and an ionizable alkaline metal salt; subjecting said mixture to actinic radiation to thereby crosslink said radiation polymerizable ionically conducting material and form a solid matrix containing said ionically conducting liquid; and electrode half elements and electrochemical cells incorporating said network.
Claims50
A method for forming a polymeric network containing a liquid electrolyte for use in solid state electrochemical cells which comprises forming a mixture of a liquid, monomeric or prepolymeric, radiation polymerizable, polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, and an ionizable alkali metal salt, and subjecting said mixture to actinic radiation to thereby crosslink said radiation polymerizable material and form a solid matrix containing said ionically conducting liquid, said ionically conducting liquid being an aprotic polar solvent.
A method for forming an anode half element which comprises coating an anodic metal foil with a mixture which includes a liquid, monomeric or prepolymeric radiation polymerizable, polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, said ionically conducting liquid being an aprotic polar solvent, and an ionizable alkali metal salt;
- and subjecting said mixture to actinic radiation to thereby polymerize said radiation polymerizable compound and form a solid matrix containing said ionically conducting liquid.
A method for forming an electrochemical cell comprising assembling an anode half element and a cathode half element with a radiation polymerizable electrolyte therebetween, said radiation polymerizable electrolyte including a liquid radiation polymerizable monomeric or prepolymeric, polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, said ionically conducting liquid being an aprotic polar solvent, and an ionizable alkali metal salt;
- and subjecting said electrolyte to actinic radiation.
A radiation curable composition useful in forming a polymeric network containing a liquid electrolyte, said composition comprising a liquid, monomeric or prepolymeric, radiation polymerizable polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, and an ionizable alkali metal salt, said ionically conducting liquid being an aprotic polar solvent.
A method for forming a cathode half element which comprises coating a metal foil with a mixture including an active cathode material, an electronic conductor, a liquid monomeric or prepolymeric, radiation polymerizable, polyethylenically unsaturated compound, and a radiation inert ionically conducting liquid, said ionically conducting liquid being a polar aprotic solvent;
- and subjecting said mixture to radiation to thereby crosslink said radiation polymerizable compound.
A method for forming an electrochemical cell which comprises coating an anodic metal foil member with a radiation polymerizable electrolyte composition including a liquid, monomeric or prepolymeric radiation polymerizable, polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, and an ionizable alkali metal salt, said ionically conducting liquid being a polar aprotic solvent;
- and overcoating said radiation polymerizable electrolyte composition with a radiation polymerizable cathode, composition including a liquid monomeric or prepolymeric radiation polymerizable polyethylenically unsaturated compound, an active cathode material, an electronic conductor, and a radiation inert ionically conducting liquid.
A method for forming an electrochemical cell which comprises coating a metal foil member with a radiation polymerizable cathode composition including a liquid radiation polymerizable, monomeric or prepolymeric, polyethylenically unsaturated compound containing heteroatom, a radiation inert ionically conducting liquid, said ionically conducting liquid being a polar aprotic solvent;
- an active cathode material, and an electronic conductor;
- and overcoating said radiation polymerizable cathode composition with a radiation polymerizable electrolyte composition including a liquid radiation polymerizable monomeric or prepolymeric polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, and an ionizable alkali metal salt.
A method for forming an electrochemical cell which comprises coating an anodic metal foil member with a radiation polymerizable electrolyte composition including a liquid, monomeric or prepolymeric, radiation polymerizable, polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, said ionically conducting liquid being a polar aprotic solvent;
- and an ionizable alkali metal salt;
- subjecting said electrolyte composition to radiation;
- and overcoating said cured electrolyte composition with a radiation polymerizable cathode composition including a liquid monomeric or prepolymeric radiation polymerizable polyethylenically unsaturated compound, an active cathode material, an electronic conductor, and a radiation inert ionically conducting liquid.
A method for forming an electrochemical cell which comprises coating an metal foil member with a radiation polymerizable cathode composition including a liquid polymerizable, monomeric or prepolymeric, polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, an active cathode material, and an electronic conductor;
- subjecting said cathode composition to radiation to cure said cathode composition;
- and overcoating said cured cathode composition with a radiation polymerizable electrolyte composition including a liquid radiation polymerizable monomeric or prepolymeric polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, and an ionizable alkali metal salt, said ionically conducting liquid being a polar aprotic solvent.
A method for forming an electrochemical cell which comprises coating an anodic metal foil member with a radiation polymerizable electrolyte composition including a liquid, monomeric or prepolymeric radiation polymerizable polyethylenically unsaturated compound, a radiation inert ionically conducting liquid, and an ionizable alkali metal salt;
- and coating a metal foil member with a radiation polymerizable cathode composition including a liquid radiation polymerizable monomeric prepolymeric polyethylenically unsaturated compound a radiation inert ionically conducting liquid, said ionically conducting liquid being a polar aprotic solvent;
- an active cathode material and electronic conductor.
Dependencies are inferred from the claim text.