Abstract: Mechanisms and methods for injecting and sealing pressurized fluid into containment vessels using a divided valve mechanism are disclosed. The invention describes designs and methods in which a valve may be plugged by an actuator, and then the valve and actuator may then be disjoined, allowing the containment vessel to thereby be sealed without the additional mass or volume of the actuation mechanism and without fluid loss from the containment vessel.

Abstract: Methods, systems, and apparatuses are described for implementing electrochemical energy storage devices using a liquefied gas electrolyte. The mechanical designs of an electrochemical device to house a liquefied gas electrolyte as well as methods of filling and sealing said device are presented.

Abstract: A battery device is disclosed that includes an ionically conducting electrolyte comprising a mixture of a compressed gas solvent and one or more solid or liquid salts, wherein the compressed gas solvent comprises at least a first component that has a vapor pressure above 100 kPa at a room temperature of 293.15 K. The device also includes a housing enclosing the ionically conducting electrolyte under a pressurized condition to maintain the compressed gas solvent at a pressure higher than 100 kPa at a room temperature of 293.15 K. The device also includes at least two conducting electrodes in contact with the ionically conducting electrolyte.

Abstract: Novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents are disclosed. Unlike conventional electrolytes, the disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various combinations of salt and solvents are disclosed to increase performance of electrochemical capacitors using liquefied gas electrolytes.

Abstract: Disclosed are novel methods and techniques for introducing liquefied gas solvents into electrochemical devices. Unlike conventional electrolytes, the disclosed electrolytes are based on “liquefied gas solvents” mixed with various salts, referred to as “liquefied gas electrolytes.” The disclosed liquefied gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high-pressure solvent properties. Non-limiting examples of a class of liquefied gases that can be used as solvents for electrolytes include hydrofluorocarbons, and in particular include fluoromethane, difluoromethane, tetrafluoroethane, and pentafluoroethane.

Abstract: Chemical additives are disclosed to increase solubility of salts in liquefied gas electrolytes.