Claims
- 1. A method of making an electrolyte material for an electrochemical cell, aid method comprising the steps of:
- providing a powdered polymeric precursor material characterized by a melting temperature of greater than 100.degree. C.;
- mixing said powdered polymeric precursor material with operative amounts of an electrolyte active species having a boiling point of greater than 100.degree. C.; and
- heating said powdered polymeric precursor and said electrolyte active species to temperatures of greater than 100.degree. C. but generally less than the boiling temperature of said electrolyte active species.
- 2. A method as in claim 1, including the further step of selecting the powdered polymeric precursor material from the group consisting of poly(benzimidazole), poly(ethyleneoxide), poly(acrylamide), poly(vinylpyrrolidone), poly(vinylpyridine), poly(ethyleneimine), and combinations thereof.
- 3. A method as in claim 1, wherein said electrolyte active species is selected from the group consisting of H.sub.2 SO.sub.4, H.sub.3 PO.sub.4, HCl, HClO.sub.4, HNO.sub.3, and combinations thereof.
- 4. A method as in claim 1, wherein the ratio of electrolyte active species to polymer is between 2:1 and 40:1 by weight.
- 5. A method as in claim 1, wherein the ratio of electrolyte active species to polymer is between 5:1 and 30:1 by weight.
- 6. A method of fabricating an electrolyte material for an electrochemical cell comprising the steps of
- providing a powdered linear polymer precursor material;
- expanding the free volume of said polymer precursor material; and
- protonating said polymer precursor via exposure to an acidic electrolyte active species.
- 7. A method as in claim 6, wherein said polymer is selected from the group consisting of poly(benzimidazole), poly(ethyleneoxide), poly(acrylamide), poly(vinylpyrrolidone), poly(vinylpyridine), poly(ethyleneimine), and combinations thereof.
- 8. A method as in claim 6, wherein said electrolyte active species is selected from the group consisting of H.sub.2 SO.sub.4, H.sub.3 PO.sub.4, HCl, HClO.sub.4, HNO.sub.3, and combinations thereof.
- 9. A method as in claim 6, wherein the ratio of electrolyte active species to polymer is between 2:1 and 40:1 by weight.
- 10. A method as in claim 6, wherein the ratio of electrolyte active species to polymer is between 5:1 and 30:1 by weight.
- 11. A method of fabricating an electrolyte material for an electrochemical cell comprising the steps of mixing powdered poly(benzimidazole) with H.sub.3 PO.sub.4 at temperatures in excess of 100.degree. C., and in a ratio H.sub.3 PO.sub.4 to poly(benzimidazole of between 5:1 and 30:1 by weight.
Parent Case Info
This is a divisional application under .sctn.1.60 of pending U.S. patent application Ser. No. 08/693,780 filed Jul. 22, 1996 now U.S. Pat. No. 5,693,434 and assigned to Motorola, Inc.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0078404A2 |
Mar 1982 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
693780 |
Jul 1996 |
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