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US 8,027,147 B2Granted
Ultracapacitor and method of manufacturing the same
AssigneeDaramic, LLC
InventorsEric H. Miller, Kevin Whear, Mark T. Demeuse
Life of this patent
Estimating the term…
Abstract
A method for producing an ultracapacitor includes the steps of: providing a negative porous electrode in contact with a negative conducting plate; providing a positive porous electrode in contact with a positive conducting plate; providing an ultracapacitor separator being a microporous material that separates the negative porous electrode from the positive porous electrode; providing an electrolytic solution that impregnates the negative porous electrode, the positive porous electrode, and the ultracapacitor separator; and curing the ultracapacitor at a temperature of at least 200° C.
Claims12
An ultracapacitor comprising:
- a negative porous electrode in contact with a negative conducting plate;
- a positive porous electrode in contact with a positive conducting plate
- an ultracapacitor separator separating said negative porous electrode from said positive porous electrode;
- and
- an electrolytic solution impregnating said positive and negative porous electrodes and said ultracapacitor separator;
- where said ultracapacitor separator having a change in thickness of less than 8% when heated to a temperature of at least 200° C.;
- and
- said ultracapacitor separator including a microporous material comprising:
- an ultrahigh molecular weight polyethylene (UHMWPE) and a particulate filler distributed throughout said microporous material;
- where said filler constitutes from about 5 percent to 95 percent by weight of said microporous material;
- where said microporous material has a network of interconnecting pores communicating throughout said microporous material, said pores constituting at least 25 percent by volume of said microporous material, where said pores create a pore distribution;
- where said microporous material has no pores greater in size than 1.0 micrometers;
- and
- where change in volume divided by log d for the pores of said microporous material is less than 2 cc/g for the entire pore distribution.
11 more elements
An ultracapacitor separator comprising:
- a microporous material having a change in thickness of less than 8% when heated to a temperature of at least 200° C.
- wherein said microporous material being utilized in an ultracapacitor as an ultracapacitor separator separating a negative porous electrode from a positive porous electrode;
- said ultracapacitor separator including a microporous material comprising:
- an ultrahigh molecular weight polyethylene (UHMWPE) and a particulate filler distributed throughout said microporous material;
- where said filler constitutes from about 5 percent to 95 percent by weight of said microporous material;
- where said microporous material has a network of interconnecting pores communicating throughout said microporous material, said pores constituting at least 25 percent by volume of said microporous material, where said pores create a pore distribution;
- where said microporous material has no pores greater in size than 1.0 micrometers;
- and
- where change in volume divided by log d for the pores of said microporous material is less than 2 cc/g for the entire pore distribution.
6 more elements
An ultracapacitor made according to a method for producing an ultracapacitor comprising the steps of:
- providing a negative porous electrode in contact with a negative conducting plate;
- providing a positive porous electrode in contact with a positive conducting plate;
- providing an ultracapacitor separator having a change in thickness of less than 8% at a curing temperature of at least 200° C., where said ultracapacitor separator separating said negative porous electrode from said positive porous electrode;
- said ultracapacitor separator including a microporous material comprising:
- an ultrahigh molecular weight polyethylene (UHMWPE) and a particulate filler distributed throughout said microporous material;
- where said filler constitutes from about 5 percent to 95 percent by weight of said microporous material;
- where said microporous material has a network of interconnecting pores communicating throughout said microporous material, said pores constituting at least 25 percent by volume of said microporous material, these pores create a pore distribution;
- where said microporous material has no pores greater in size than 1.0 micrometers;
- and
- where change in volume divided by log d for the pores of this microporous material is less than 2 cc/g for the entire pore distribution;
- providing an electrolytic solution;
- said electrolytic solution impregnating said negative porous electrode, said positive porous electrode, and said ultracapacitor separator;
- and
- curing said ultracapacitor of at least 200° C.
11 more elements
Dependencies are inferred from the claim text.