Electrode and current collector for electrochemical capacitor having double electric layer and double electric layer electrochemical capacitor formed therewith

A double electric layer electrochemical capacitor, comprising:

• at least one polarizable electrode assembly, said polarizable electrode assembly further comprising:
• (a) at least one electrode comprising a composite mixture having an active material consisting essentially of an activated carbon obtained from the carbonization and subsequent activation of a furane tar and/or a furane resin, and a fluorine-containing polymer binder;
• and
• (b) a current collector, said current collector further comprising:
• a substrate formed from an electrically conductive material, and a protective coating encasing at least a portion of said substrate that will be exposed to an electrolyte once said current collector is installed to said electrochemical capacitor, said protective coating consisting essentially of a composite having a polymer base material and a conductive dope that is resistant to an acid-based electrolyte,
• at least one non-polarizable electrode assembly, said non-polarizable electrode assembly further comprising:
• (a) at least one non-polarizable electrode consisting essentially of a composite mixture of a metal dioxide and a metal sulfate;
• and
• (b) a current collector, said current collector further comprising:
• a substrate formed from an electrically conductive material, and a protective coating encasing at least a portion of said substrate that will be exposed to an electrolyte once said current collector is installed to said electrochemical capacitor, said protective coating consisting essentially of a composite having a polymer base material and a conductive dope that is resistant to an acid-based electrolyte,
• an enclosure for housing both said at least one polarizable electrode assembly and said at least one non-polarizable electrode assembly;
• at least one separator within said enclosure for separating said at least one polarizable electrode assembly from said at least one non-polarizable electrode assembly;
• and
• an acid-based electrolyte residing within said enclosure and between said at least one polarizable electrode assembly and said at least one non-polarizable electrode assembly;
• wherein charge storage is accomplished at said at least one polarizable electrode assembly by means of a non-Faradaic, double layer electrochemical mechanism that occurs at an interface of said polarizable electrode and said electrolyte;
• and
• wherein said charge storage is accomplished at said at least one non-polarizable electrode assembly by means of oxidation/reduction reactions that occur at an interface between said non-polarizable electrode and said electrolyte.

A double electric layer electrochemical capacitor, comprising:

• a plurality of polarizable electrode assemblies, each of said polarizable electrode assemblies comprising:
• (a) at least one electrode consisting essentially of a composite mixture having an active material comprising an activated carbon obtained from the carbonization and subsequent activation of a furane tar and/or a furane resin, and a fluorine-containing polymer binder;
• and
• (b) a current collector, said current collector further comprising:
• a substrate formed from an electrically conductive material, and a protective coating encasing at least a portion of said substrate that will be exposed to an electrolyte once said current collector is installed to said electrochemical capacitor, said protective coating consisting essentially of a composite having a polymer base material and a conductive dope that is resistant to an acid-based electrolyte,
• an enclosure for housing both said plurality of polarizable electrode assemblies;
• at least one separator within said enclosure for separating said plurality of polarizable electrode assemblies;
• and
• an acid-based electrolyte residing within said enclosure and between said plurality of polarizable electrode assemblies;
• wherein charge storage is accomplished at each of said plurality of polarizable electrode assemblies by means of a non-Faradaic, double layer electrochemical mechanism that occurs at an interface of said polarizable electrode and said electrolyte.