Pseudo-capacitor device for aqueous electrolytes

Patent · Wed Dec 31 23:00:00 EST 1997

OSTI ID:872002

Prakash, Jai ^[1]; Thackeray, Michael M ^[2]; Dees, Dennis W ^[3]; Vissers, Donald R ^[4]; Myles, Kevin M ^[5]

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1. 3849 NW. 65th Ave., Gainesville, FL 32653
2. 1763 Cliffside Ct., Naperville, IL 60565
3. 6224 Middaugh Ave., Downers Grove, IL 60516
4. 611 Clover Ct., Naperville, IL 60540
5. 1231 60th Pl., Downers Grove, IL 60516-1856

A pseudo-capacitor having a high energy storage capacity develops a double layer capacitance as well as a Faradaic or battery-like redox reaction, also referred to as pseudo-capacitance. The Faradaic reaction gives rise to a capacitance much greater than that of the typical ruthenate oxide ultracapacitor which develops only charge separation-based double layer capacitance. The capacitor employs a lead and/or bismuth/ruthenate and/or iridium system having the formula A.sub.2 ›B.sub.2-x Pb.sub.x !O.sub.7-y, where A=Pb, Bi, and B=Ru, Ir, and O

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: Prakash, Jai (3849 NW. 65th Ave., Gainesville, FL 32653);Thackeray, Michael M. (1763 Cliffside Ct., Naperville, IL 60565);Dees, Dennis W. (6224 Middaugh Ave., Downers Grove, IL 60516);Vissers, Donald R. (611 Clover Ct., Naperville, IL 60540);Myles, Kevin M. (1231 60th Pl., Downers Grove, IL 60516-1856)
• Patent Number(s): US 5841627
• OSTI ID: 872002
• Country of Publication: United States
• Language: English

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40
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b
battery-like
bismuth
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capacitor
capacity
charge
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