Abstract: In some embodiments, an apparatus includes a housing and a purge valve. The housing defines a cavity and a lumen extending from a volume of the cavity to a volume outside the cavity. The purge valve is disposed within the lumen and includes an occlusion member. A portion of the occlusion member has a width substantially equal to a width of an end portion of the lumen such that the portion of the occlusion member is disposed within the end portion of the lumen when the purge valve is in a first configuration. The portion of the occlusion member being disposed outside the end portion of the lumen when the purge valve is in a second configuration.

Abstract: A method of manufacturing an electrode includes printing an electrode ink on a portion of a substrate using a rotary lithographic printer. The electrode ink is allowed to dry on the substrate. A separator material is printed on the portion of the substrate using the rotary lithographic printer. A sealant wall is printed around the portion of the substrate using the rotary lithographic printer.

Abstract: The disclosure describes an improved electrolytic capacitor, more specifically, a method of making an electrolytic capacitor with a graphene-based energy storage layer and dielectric. The electrode with layered graphene energy storage and dielectric layers may be used in a variety of electrolytic capacitor configurations.

Abstract: The disclosure describes an improved electrolytic capacitor, more specifically, a method of making an electrolytic capacitor with a graphene-based energy storage layer and dielectric. The electrode with layered graphene energy storage and dielectric layers may be used in a variety of electrolytic capacitor configurations.

Abstract: A method of manufacturing am electrode includes printing an electrode ink on a portion of a substrate using a rotary Lithographic printer. The electrode ink is allowed to dry on the substrate. A separator material is printed on the proton of the substrate using the rotary lithographic printer. A wall is printed around the portion of the substrate using the rotary litho-graphic printer.

Abstract: A method of manufacturing an electrode includes printing an electrode ink on a portion of a substrate using a rotary lithographic printer. The electrode ink is allowed to dry on the substrate. A separator material is printed on the portion of the substrate using the rotary lithographic printer. A sealant wall is printed around the portion of the substrate using the rotary lithographic printer.

Abstract: The disclosure describes an improved electrolytic capacitor, more specifically, an electrolytic capacitor with a graphene-based energy storage layer and dielectric, and a method of making the improved electrolytic capacitor. The electrode with layered graphene energy storage and dielectric layers may be used in a variety of electrolytic capacitor configurations.

Abstract: In some embodiments, an apparatus includes a housing and a purge valve. The housing defines a cavity and a lumen extending from a volume of the cavity to a volume outside the cavity. The purge valve is disposed within the lumen and includes an occlusion member. A portion of the occlusion member has a width substantially equal to a width of an end portion of the lumen such that the portion of the occlusion member is disposed within the end portion of the lumen when the purge valve is in a first configuration. The portion of the occlusion member being disposed outside the end portion of the lumen when the purge valve is in a second configuration.

Abstract: The disclosure describes an improved electrode with high voltage standoff characteristics and improved graphene-based materials and methods of making them for use therein. A graphene-based thin film material is described that may be applied or transferred to a current collector to create the improved electrode. The thin film comprises high aspect ratio graphene platelets applied to the surface of a current collector or other substrate in a known ratio to a film binder material. The film is produced with a desired layer thickness and graphene-to-binder ratio to produce a desired voltage standoff for the electrode. The film may include additional materials to achieve the desired dielectric and mechanical characteristics for the application, such as ferroelectric ceramic nanorods with a high aspect ratio and high dielectric constant and/or graphene sheets.

Abstract: In some embodiments, an apparatus includes a housing and a purge valve. The housing defines a cavity and a lumen extending from a volume of the cavity to a volume outside the cavity. The purge valve is disposed within the lumen and includes an occlusion member. A portion of the occlusion member has a width substantially equal to a width of an end portion of the lumen such that the portion of the occlusion member is disposed within the end portion of the lumen when the purge valve is in a first configuration. The portion of the occlusion member being disposed outside the end portion of the lumen when the purge valve is in a second configuration.

Abstract: The invention provides operational monitoring for electrochemical capacitors and, more specifically, the monitoring of operational performance characteristics of electrochemical capacitors using electrochemical impedance measurement in an application system in the field. The apparatus and methods of the present invention monitor the operational characteristics of a plurality of electrochemical capacitors in an application system with the goal of providing state of health information to the application system or through another monitoring or alert system. By generating an input monitoring signal to query each cell in the pack and calculating the impedance measurement signal from the resulting output signal, the real-time impedance measurements can be compared against a stored electrochemical impedance model to provide state of health information. Real-time monitoring data based on the state of health information can then be output to the application system or through another monitoring or alert system.

Abstract: The disclosure describes an improved electrolytic capacitor, more specifically, an electrolytic capacitor with a graphene-based energy storage layer and dielectric, and a method of making the improved electrolytic capacitor. The electrode with layered graphene energy storage and dielectric layers may be used in a variety of electrolytic capacitor configurations.

Abstract: An EDLC device in which the double layer capacitors themselves are produced lithographically. The resultant EDLC can be of any capacitance and voltage combination for a particular application. The entire lithographically formed entity can be housed in a single container and rated according to its capacitance and voltage standoff characteristics. Through material control processes, the electrochemical composites developed onto the current collector is unilaterally equalized, providing the desired distributed voltage standoffs, thus promoting the ability to design high voltage independent cells without the normal electronic balancing circuitry associated with multiple series-connected electrochemical cells.

Abstract: An electrode material composition for use in manufacturing energy storage device electrodes includes an active material, a conductive material including Ketjen Black, a binder comprising at least one of a polymer emulsion dispersed in water and a water-soluble polymer mixture, and a surfactant. The electrodes are manufactured by thy-mixing the active material and the conductive material to form a thy-mixed active material mixture. The drymixed active material mixture is then mixed with a binder solution to form a slurry and the slurry is coated onto a currently collector and dried to form an electrode.

Abstract: In some embodiments, an apparatus includes a housing and a purge valve. The housing defines a cavity and a lumen extending from a volume of the cavity to a volume outside the cavity. The purge valve is disposed within the lumen and includes an occlusion member. A portion of the occlusion member has a width substantially equal to a width of an end portion of the lumen such that the portion of the occlusion member is disposed within the end portion of the lumen when the purge valve is in a first configuration. The portion of the occlusion member being disposed outside the end portion of the lumen when the purge valve is in a second configuration.

Abstract: A method of manufacturing an electrode includes printing an electrode ink on a portion of a substrate using a rotary lithographic printer. The electrode ink is allowed to dry on the substrate. A separator material is printed on the portion of the substrate using the rotary lithographic printer. A sealant wall is printed around the portion of the substrate using the rotary lithographic printer. The substrates are then “stacked” and “folded” in appropriate configurations to obtain a desired capacitance and voltage standoff.

Abstract: The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.

Abstract: A method of manufacturing an electrode includes printing an electrode ink on a portion of a substrate using a rotary lithographic printer. The electrode ink is allowed to dry on the substrate. A separator material is printed on the portion of the substrate using the rotary lithographic printer. A sealant wall is printed around the portion of the substrate using the rotary lithographic printer.

Abstract: A composition comprising an electrode or an electrical double-layer capacitor with dielectric material is disclosed, along with methods of making the composition. The present invention improves upon state-of-the-art electrodes and capacitors by coating a material of high dielectric constant onto the surface of the electrode to produce improved electrical properties. The composition is particularly useful for design of novel electrical double-layer capacitors.

Abstract: The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.