Capacitor with dual electric layer

• US 6,426,862 B1
• Filed: 08/16/2000
• Issued: 07/30/2002
• Est. Priority Date: 12/18/1997
• Status: Expired due to Fees

• Current Assignee: Nauchno-Proizvodstvennoe Predpriyatie "Inkar-M"
• Original Assignee: Nauchno-Proizvodstvennoe Predpriyatie "Exin"
• Inventors: Baskakov, Andrei Viktorovich, Buldyaev, Alexandr Fedorovich, Shmatko, Pavel Andreevich, Dashko, Oleg Grigorievich, Ashmarin, Evgeny Alexandrovich, Vasechkin, Vladimir Ivanovich, Volfkovich, Jury Mironovich
• Primary Examiner(s): Reichard, Dean A.
• Assistant Examiner(s): Ha, Nguyen T
• Application Number:
  US09/581,738
• Time in Patent Office: 713 Days
• Field of Search: 361/502, 361/512, 361/508, 361/516, 361/523, 361/525, 361/528, 361/504, 361/509, 361/503, 361/511, 361/510, 29/250.3
• US Class Current: 361/502
• CPC Class Codes: H01G 11/04 Hybrid capacitors
• CPC Class Codes: H01G 11/62 characterised by the solute, e.g. salts, anions or cations therein
• CPC Class Codes: H01G 11/64 characterised by additives
• CPC Class Codes: H01G 11/72 specially adapted for integration in multiple or stacked hybrid or EDL capacitors
• CPC Class Codes: H01G 11/74 Terminals, e.g. extensions of current collectors
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

A capacitor with dual electric layer, wherein one of the electrodes is made of a porous carbon material and the other capacitor, of a material containing lead sulfate. The capacitor features enhanced characteristics and lower cost.

Claims

1. A dual electric layer capacitor, characterized in that it comprises:

at least one polarizable electrode which is made from a porous carbon material;

a non-polarizable electrode which is made from a material containing lead sulfate; and

electrolyte appearing as an aqueous solution containing sulfuric acid, and

a current lead having a potective coating made of graphite foil impregnated with an acid-resistant polymer.

2. A capacitor according to claim 1, characterized in that it further comprises two polarizable electrodes, one non-polarizable electrode, and two separators, all of said components being arranged in the following order:

the first polarizable electrode/the first separator/the non-polarizable electrode/the second separator/the second polarizable electrode, both of the polarizable electrodes being short-circuited on each other.

3. A capacitor according to claim 1, characterized in that at least one electrode comprises a particulate polymer.

4. A capacitor according to claim 1, CHARACTERIZED in that it is subjected to compression.