# US 7,466,539 B2 · Electrochemical double-layer capacitor using organosilicon electrolytes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,466,539 B2 - Document ID: US7466539B2 - Status: Granted - Kind: B2 - Application number: 11/240,132 - Filed: 2005-09-30 - Published: 2007-04-05 - Granted: 2008-12-16 - Earliest claimed: 2005-09-30 - Assignees: Wisconsin Alumni Research Foundation - Inventors: Viacheslav V. Dementiev; Robert C. West; Robert J. Hamers; Kiu-Yuen Tse - Web page: https://patentgrep.com/patent/US7466539B2 ## CPC - H01G 11/62: characterised by the solute, e.g. salts, anions or cations therein - H01G 11/24: characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor - H01G 11/26: characterised by their structure, e.g. multi-layered, porosity or surface features - H01G 11/38: Carbon pastes or blends; Binders or additives therein - H01G 11/58: Liquid electrolytes - Y02B 10/30: Wind power - Y02E 60/13: Energy storage using capacitors - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Disclosed are supercapacitors having organosilicon electrolytes, high surface area/porous electrodes, and optionally organosilicon separators. Electrodes are formed from high surface area material (such as porous carbon nanotubes or carbon nanofibers), which has been impregnated with the electrolyte. These type devices appear particularly suitable for use in electric and hybrid electric vehicles. ## Claims ### Claim 1 An electrochemical double-layer capacitor, comprising: a first electrode having a first porous material mixed with a first organosilicon electrolyte; and a second electrode; wherein the first organosilicon electrolyte is an oligoethyleneoxide substituted organosilane electrolyte. ### Claim 2 An electrochemical double-layer capacitor, comprising: a first electrode having a first porous material mixed with a first organosilicon electrolyte; and a second electrode, wherein the second electrode comprises a second porous material which is the same or different from the first porous material and is mixed with a second organosilicon electrolyte which is the same or different from the first organosilicon electrolyte. ### Claim 3 (depends on 2) The electrochemical double-layer capacitor of claim 2, further comprising a separator disposed between the first and second electrodes. ### Claim 4 (depends on 3) The electrochemical double-layer capacitor of claim 3, wherein the electrode separator also comprises an organosilicon polymer. ### Claim 5 (depends on 2) The electrochemical double-layer capacitor of claim 2, wherein the first organosilicon electrolyte is a polysiloxane electrolyte. ### Claim 6 (depends on 2) The electrochemical double-layer capacitor of claim 2, wherein the first and second porous materials are selected from the group consisting of porous carbon, non-porous carbon having crystallites suitable for ions intercalation, porous metal oxides, and carbon modified with an electroactive polymer, and the first porous material is the same or different from the second porous material. ### Claim 7 (depends on 6) The electrochemical double-layer capacitor of claim 6, wherein the first and second porous materials are selected from the group consisting of porous carbon nanotubes and carbon nanofibers. ### Claim 8 (depends on 7) The electrochemical double-layer capacitor of claim 7, wherein the first porous material is a patterned carbon nanofiber material, and the first and second electrodes are not separated by a separator. ### Claim 9 (depends on 2) The electrochemical double-layer capacitor of claim 2, further comprising a first current collector adjacent the first electrode and a second current collector adjacent the second electrode. ### Claim 10 (depends on 9) The electrochemical double-layer capacitor of claim 9, wherein the first and second current collectors comprise aluminum. ### Claim 11 (depends on 2) The electrochemical double-layer capacitor of claim 2, wherein the electrolyte of both the first and second electrode further comprise a lithium salt. ### Claim 12 (depends on 11) The electrochemical double-layer capacitor of claim 11, wherein the lithium salt is the same lithium salt for both the first and second electrode. ### Claim 13 (depends on 12) The electrochemical double-layer capacitor of claim 12, where in the lithium salt is selected from the group consisting of lithium-tetrafluoro-borate, lithium-bis (trifluoromethylsulfonyl)imide, and lithium bis-oxalatoborate. ### Claim 14 An electrochemical double-layer capacitor comprising a first electrode and a second electrode, these electrodes both being formed as part of a patterned array of spaced carbon nanofibers, wherein the electrochemical double layer capacitor does not have a separator between the electrodes. ### Claim 15 (depends on 14) The electrochemical double-layer capacitor of claim 14, wherein at least the first electrode further comprises an organosilicon electrolyte.