Pseudo-capacitor device for aqueous electrolytes

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:872002

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

---

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 (United States)
• 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

Related Subjects

pseudo-capacitor
device
aqueous
electrolytes
energy
storage
capacity
develops
double
layer
capacitance
faradaic
battery-like
redox
reaction
referred
pseudo-capacitance
rise
typical
ruthenate
oxide
ultracapacitor
charge
separation-based
capacitor
employs
lead
bismuth
iridium
formula
b
2-x
pb
7-y
ru
ltoreq
limits
amount
electrodes
increasing
synthesized
temperatures
40
degree
-80
form
compound
surface
electronic
conductivity
combination
increased
affords
power
density
expensive
substantially
reduced
content
improving
aqueous electrolyte
redox reaction
substantially reduced
energy storage
double layer
power density
substantially reduce
electronic conductivity
storage capacity
lead content
/361/