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US 6,887,619 B2Granted
Cross-linked polysiloxanes
AssigneeQuallion LLC
InventorsRobert C. West, Zhengcheng Zhang
Life of this patent
Estimating the term…
Abstract
Disclosed herein are cross-linked polysiloxane polymers having oligooxyethylene side chains. Lithium salts of these polymers can be synthesized as a liquid and then caused to solidify in the presence of elevated temperatures to provide a solid electrolyte useful in lithium batteries.
Claims31
A battery, comprising:
- a battery housing;
- and
- an electrolyte within the housing, the electrolyte including a cross-linked polysiloxane having at least one main chain segment in which a portion of the silicons are each linked to a plurality of side chains that each include an oligo(ethylene glycol) moiety and a portion of the silicons are linked to a cross linker that includes a poly(ethylene glycol) moiety or a polysiloxane moiety.
A battery, comprising:
- a battery housing;
- an electrolyte within the housing, wherein the electrolyte includes a cross-linked polysiloxane having at least one main chain segment in which a portion of the silicons are each linked to a plurality of side chains, each side chain including an oligo (ethylene glycol) moiety and a portion of the main chain silicons are linked to a cross linker including a moiety selected from the group consisting of O—(CH2CH2O)q and Si—O—(Si—O)k—Si wherein q is at least 4 and k is at least 5.
A battery made by the method of:
- providing an anode;
- providing a cathode;
- and
- activating the anode and cathode with an electrolyte including a cross-linked polysiloxane made by the method of:
- reacting a polysiloxane with a cross-linking agent;
- wherein
- a portion of the silicons in the polysiloxane main chain are each linked to a plurality of side chains that each include an oligo(ethylene glycol) moiety and a portion of the silicons are linked to a cross linker that includes a poly(ethylene glycol) moiety or a polysiloxane moiety;
- and wherein
- the cross-linking agent includes a moiety selected from the group consisting of:
- O—(CH2CH2O)p and Si—O—(Si—O)k—Si wherein q is at least 4 and k is at least 5.
7 more elements
A method of providing a battery, comprising:
- transporting a polysiloxane and cross-linking agent into a battery housing, wherein
- a portion of the silicons in the polysiloxane main chain are linked to at least one hydrogen and a portion of the silicons in the polysiloxane main chain are each linked to a plurality of side chains that each include an oligo (ethylene glycol), and
- the cross linking agent includes a poly(ethylene glycol) moiety or a polysiloxane moiety;
- and
- reacting the polysiloxane and cross-linking agent within the battery housing so as to form a solid cross-linked polysiloxane within the battery housing.
2 more elements
A method of preparing a battery, comprising:
- mixing a polysiloxane and a cross-linking agent,
- a portion of the silicons in the polysiloxane are each linked to a plurality of side chains that each include an oligo(ethylene glycol) moiety and a portion of the silicons in the main chain of the polysiloxane are linked to a hydrogen, and
- the cross-linking agent including a poly(ethylene glycol) moiety or a polysiloxane moiety.
A method of preparing a battery, comprising:
- mixing a polysiloxane and a cross-linking agent,
- a portion of the silicons in the polysiloxane each being linked to a plurality of side chains that each include an oligo(ethylene glycol) moiety, and
- the cross-linking agent including a polysiloxane moiety.
Dependencies are inferred from the claim text.