75 results about "High-pressure electrolysis" patented technology

An offshore vessel embodies a mobile buoyant energy recovery system enabled to extract energy from solar power. An exemplary energy recovery system comprises concentrating solar thermal power systems (CSP) or concentrating photovoltaic power (CPV) systems on the deck of the vessel. Within the vessel hull, ballast water serves multiple purposes. The ballast not only stabilizes the vessel, but also provides reactant for hydrogen electrolysis or ammonia synthesis, or steam for a turbine. For CPV systems the ballast conducts heat as a coolant improving the efficiency and durability of photovoltaic cells. For CSP systems the ballast water becomes superheated steam through a primary heat exchanger in the concentrator. In some embodiments, some steam from the CSP primary heat exchanger or from the CPV coolant system undergoes high-pressure electrolysis of enhanced efficiency due to its high temperature. In some embodiments, the remaining steam that did not undergo electrolysis drives a steam turbine providing electrical current for electrolysis. A secondary heat exchanger takes heat from the steam expelled from an energy storage process to efficiently distill ballast water at a lower temperature thus minimizing corrosion and build-up of scale. A remote control Supervisory Control and Data Acquisition System (SCADA) determines position, navigation, configuration, and operation of the preferably unmanned modular mobile buoyant energy recovery structure based on Geospatial Information Systems (GIS), Velocity Performance Prediction (VPP) models, Global Positioning Satellites (GPS) and various onboard sensors and controls.

The invention provides a working electrolyte for a flame-retardant wide-temperature high-voltage aluminum electrolytic capacitor, which comprises the following components in percentage by weight: 45-80% of main solvent, 0.1-5% of oxidation film stabilizer, 5-15% of secondary solvent, 0.2-3% of hydrogen absorption agent, 5-10% of solute, 5-15% of flame retardant and 5-15% of spark voltage increasing agent. The invention also provides a preparation method of the electrolyte and application of the electrolyte in preparation of a high-voltage electrolytic capacitor. In the electrolyte, appropriate solvent combination is adopted, thus the wide temperature from -40 DEG C to 105 DEG C is realized; a composite solute of an organic carboxylate with a branched chain and a straight-chain carboxylate with a long carbon chain is adopted, thus the stability is ensured, and the cost is controlled; the appropriate spark voltage increasing agent, oxidation film stabilizer and hydrogen absorption agent are added, thus the spark voltage of the electrolyte is increased, and the characteristic parameters of the aluminum electrolytic capacitor are not deteriorated after the aluminum electrolytic capacitor is used for a long time; and the flame retardant is added, thus the aluminum electrolytic capacitor is difficult to burn after striking fire.

The invention discloses a high-voltage electrolyte solution adaptive to a high-energy-density positive electrode material; the high-voltage electrolyte solution is composed of an organic solvent, an electrolyte lithium salt, a positive electrode film-forming additive, a negative electrode film-forming additive and the like, wherein the organic solvent is composed of carbonate and a fluorinated solvent, the electrolyte lithium salt is composed of lithium hexafluorophosphate and lithium oxalyldifluoroborate, the positive electrode film-forming additive is composed of tri(hexafluorisopropyl) phosphate and a nitrile additive, and the negative electrode film-forming additive is composed of 1,3-propyl-sultone and vinylethylene carbonate. The high-voltage electrolyte solution provided by the invention can be applicable to 4.5-5.0 V charging voltage, and has good oxidation resistance, high-temperature resistance and safety characteristics. A high-energy-density battery adopting the electrolyte solution has good cycle and safety performance under high voltage and high temperature.

A method for reducing pressure build-up in an electrochemical cell comprising: providing an anhydrous nonaqueous electrolyte solution comprising at least one quaternary ammonium salt and at least one anhydrous nonaqueous solvent; contacting said electrolyte solution with at least one acid scavenger; and loading said nonaqueous electrolyte solution into said electrochemical cell. Also, an electric double-layer capacitor (supercapacitor) comprising a free acid scavenger.

An apparatus and method providing for detecting and responding to high voltage electrolysis within an electric vehicle battery enclosure to limit possible excessive thermal condition of the individual battery cells and modules. The present invention includes embodiments directed towards detection algorithms and apparatus for promoting the use of voltage, current, humidity, temperature, and pressure sensors for the purpose of detecting high voltage electrolysis. Additionally, the present invention includes response processes and structures to address high-voltage electrolysis.

The invention relates to an electrolysis installation for decomposing water into hydrogen and oxygen, comprising: an electrolysis stack (5); a water recirculation system supplying water to the stack, the recirculation system comprising a circuit (11, 13) and a recirculation pump (15), a first and a second separator (7, 9) for separating from the water the hydrogen and the oxygen respectively produced in the stack (5); a hydraulic supply means which supply the recirculation circuit (11, 13) with deionised water so as to compensate for the water consumed by the production of gaseous hydrogen and oxygen, and an extinguishing means for inertising the first and second separators (7, 9) when the installation is shut down, characterised by extinguishing means which comprise a first and a second relief valve (36, 23) provided on the first and second separators (7, 9) respectively, the valves being provided to relieve the pressure in the two separators simultaneously while keeping the water level inside the two separators substantially constant, and by extinguishing means which control the supply means so as to completely fill the two separators (7, 9) with water once the two separators have been relieved of pressure.

Described herein are materials for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high stability during battery cycling up to high temperatures high voltages, high discharge capacity, high coulombic efficiency, and excellent retention of discharge capacity and coulombic efficiency over several cycles of charging and discharging. In some embodiments, a high voltage electrolyte includes a base electrolyte and a set of additive compounds, which impart these desirable performance characteristics.

The invention belongs to the field of lithium ion battery electrolyte technology, and provides high voltage electrolyte for a lithium ion battery. The high voltage electrolyte comprises lithium salt, an organic solvent and an additive; and the high voltage electrolyte is characterized in that the organic solvent comprises fluoroester and a common carbonic ester organic solvent, wherein the organic solvent comprises 5-30% of the fluoroester by mass; the additive comprises ionic liquid and an film forming additive, and the mass percentage content is 0.01-8%. The high voltage electrolyte can enhance oxidative decomposition potential of the electrolyte, prolong cycle life of the lithium ion battery, and solve gas expansion and other problems of the lithium ion battery.

The invention discloses a solar energy and hydrogen energy complementary power generation type power supply system comprising a solar cell panel. The output end of the solar cell panel is connected with a solar energy charging and discharging controller. The solar energy charging and discharging controller is connected with a storage battery. The storage battery is connected with a power divider. The power divider is connected with a high-voltage water electrolysis hydrogen generator. The high-voltage water electrolysis hydrogen generator is connected with a hydrogen storage device. The hydrogen storage device is connected with a hydrogen fuel power generation device. The hydrogen fuel power generation device is connected with a water storage device. The water storage device is further connected with the high-voltage water electrolysis hydrogen generator. Both of the power divider and the hydrogen fuel power generation device are connected with an inverter. The inverter is connected with an electricity load. The solar energy and hydrogen energy complementary power generation type power supply system has the advantages of reasonable design and simple structure can be realized, the effective combination of solar energy cell power generation and hydrogen fuel cell power generation can be realized, and advantages of good practicability and high application value can be realized.

Exemplary embodiments include a method or apparatus for improving the electrolysis efficiency of high-pressure electrolysis cells by decreasing the current density at the anode and reducing an overvoltage at the anode while decreasing the amount of hydrogen permeation through the cell membrane from the cathode chamber to the anode chamber as the high-pressure electrolysis cell is operated.

An apparatus and method providing for detecting and responding to high voltage electrolysis within an electric vehicle battery enclosure to limit possible excessive thermal condition of the individual battery cells and modules. A microprocessor-implemented response system for high voltage electrolysis in a battery pack an evaluator to monitor, using the microprocessor, a high voltage electrolysis flag indicative of a possible high voltage electrolysis within an enclosure including a plurality of electrically-coupled battery modules storing energy for the battery pack and a coolant distribution system disposed among and electrically isolated from the plurality of battery modules; and a remediation system, coupled to the enclosure and responsive to the possible high voltage electrolysis when the evaluator detects a likelihood of the possible high voltage electrolysis, to decrease risks associated with the possible high voltage electrolysis when operated.

The invention provides an incombustible high-voltage lithium ion battery electrolyte and a preparation method and application thereof. The electrolyte is composed of an electrolyte organic solvent anda lithium salt; the electrolyte organic solvent is composed of two or more fluorocarbonates including an annular fluorocarbonate shown by a formula (I) and a chain fluorocarbonate shown by a formula(II) at least; in the formula (I), R1, R2, R3 and R4 are independently selected from H, F, C1-10 fluorine contained alkyl and C1-C10 fluorine contained alkyloxy, and cannot be H at the same time; andin the formula (II), R5 and R6 are independently selected from C1-10 alkyl, F and C1-10 fluorine contained alkyl, and cannot be C1-10 alkyl at the same time. The electrolyte has the advantages of incombustibility, high withstanding voltage, and capable of improving the circulation and power multiplication performances of the battery.

Described herein are materials for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high stability during battery cycling up to high temperatures high voltages, high discharge capacity, high coulombic efficiency, and excellent retention of discharge capacity and coulombic efficiency over several cycles of charging and discharging. In some embodiments, a high voltage electrolyte includes a base electrolyte and a set of additive compounds, which impart these desirable performance characteristics.

The invention provides a high-voltage electrolyte for a hybrid super tantalum capacitor and a preparation method of the high-voltage electrolyte. The high-voltage electrolyte comprises, by mass, a polar organic macromolecular substance, a proton inert solvent, imidazolium salt, sulfate of transition metal, concentrated sulfuric acid and deionized water. According to the high-voltage electrolyte, the surface morphology of a ruthenium oxide electrode is effectively improved, the internal resistance of the electrode is reduced, and the adhesion strength of ruthenium oxide is enhanced; finally, the original capacity of the capacitor is increased, and the ESR is lowered.