529results about "Electrolyte/reactants regeneration" patented technology

A system provides an environmental barrier also useful for providing a circuit, for example, one having a thin-film battery such as one that includes lithium or lithium compounds connected to an electronic circuit. An environmental barrier is deposited as alternating layers, at least one of the layers providing a smoothing, planarizing, and/or leveling physical-configuration function, and at least one other layer providing a diffusion-barrier function. The layer providing the physical-configuration function may include a photoresist, a photodefinable, an energy-definable, and/or a maskable layer. The physical-configuration layer may also be a dielectric. A layered structure, including a plurality of pairs of layers, each pair including a physical configuration layer and a barrier layer with low gas-transmission rates, may be used in reducing gas transmission rate to beyond currently detectable levels.

An electrical storage device of the present invention is characterized in that a positive electrode, a negative electrode, a lithium electrode, and an electrolyte capable of transferring lithium ion is included, the lithium electrode is arranged to be out of direct contact with the negative electrode, and lithium ion can be supplied to the negative electrode by flowing a current between the lithium electrode and the negative electrode through an external circuit. With the above characteristic, problems such as non-uniform carrying of lithium ion to the negative electrode, shape-change of a cell, and temperature increase of an electrolytic solution under incomplete sealing of a cell and the like can be easily solved. A using method of the electrical storage device is characterized in that, by using the lithium electrode as a reference electrode, the positive electrode potential and negative electrode potential can be measured, and the potential of the positive or negative electrode can be controlled when the electrical storage device is charged or discharged. Therefore, the potentials of the positive electrode and negative electrode can be monitored, thereby it can be easily determined whether deterioration of the electrical storage device is caused by the positive electrode or the negative electrode. Also, it is possible to control the device with the potential difference between the negative electrode and reference electrode, that is, the negative potential. In addition, when characteristics deteriorate such as the internal resistance increase, an appropriate amount of lithium ion can be supplied to the negative electrode and/or positive electrode by the lithium electrode.

A secondary button cell battery that is particularly suited for use in hearing aid appliances, and an associated charging station. Recharging is accomplished without direct conductive connection between the source of the energy and either the battery or its appliance. Radio frequency energy is harvested in an enclosed chamber in a charging station and applied to the recharging of the button cell. Such energy is harvested by the use of one or more energy harvesting diodes connected in parallel with the battery. Multiple diodes connected in parallel or serial may be used to adjust charging current or voltage or both. Charge control is provided by directly or indirectly detecting the level of charge on the cell. Where the associated appliance is a hearing aid, the charge level detection may be accomplished acoustically by determining the characteristics of the sound emitted by the hearing aid, and charging is accomplished with the cell within the hearing aid appliance.

A main object of the present invention is to provide an air battery system which can restrain the internal resistance caused by the shortage of liquid electrolyte from increasing and which can carry out a high-rate discharge. The present invention resolves the above-mentioned object by providing an air battery system comprising: an air battery cell which contains an air cathode, an anode, and a separator; and an oxygen gas supply means for supplying an oxygen gas by bubbling to a liquid electrolyte, characterized in that the air cathode further contains an air cathode layer containing a conductive material, and an air cathode current collector for collecting current of the air cathode layer; the anode further contains an anode layer containing an anode active material which stores and releases a metal ion, and an anode current collector for collecting current of the anode layer; and the separator is provided between the air cathode layer and the anode layer, and characterized in that the air cathode layer and the anode layer are constantly filled with the liquid electrolyte at a time of a change in a volume of the electrode caused by a discharge or a discharge and charge.

A decrease in the capacity of a power storage device is inhibited by adjusting or reducing imbalance in the amount of inserted and extracted carrier ions between positive and negative electrodes, which is caused by decomposition of an electrolyte solution of the negative electrode. Further, the capacity of the power storage device can be restored. Furthermore, impurities in the electrolyte solution can be decomposed with the use of the third electrode. A power storage device including positive and negative electrodes, an electrolyte, and a third electrode is provided. The third electrode has an adequate electrostatic capacitance. The third electrode can include a material with a large surface area. In addition, a method for charging the power storage device including the steps of performing charging by applying a current between the positive and negative electrodes, and performing additional applying a current between the third electrode and the negative electrode is provided.

Anode active material particles and an electrolytic solution 16 are filled in an anode cell 12 as one of two vessels connected to each other with an ion-permeable separator 10 interposed therebetween, and cathode active material particles and an electrolytic solution 18 are filled in a cathode cell 14 as the other vessel. Electrically conductive current collectors 20 and 22 are provided in contact with the active material particles within the two vessels. The active material particles form fixed layers.

Disclosed herein is a self-rechargeable alkaline battery. The battery comprises a cathode and an anode, at least one of which is constructed of a metallic plate, an electrode receptor equipped to the cathode, an electrode donor equipped to the anode, a separator provided between the electrode donor and the electrode receptor, an electrolyte comprising an aqueous potassium hydroxide solution and an aqueous sodium hydroxide solution and having at least one powdered material selected from the group consisting of aluminum oxide, manganese oxide, and silicon oxide. The battery has a self-rechargeable ability, stable output characteristics, and a remarkably increased life span.

A lithium-ion battery cell includes at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector, a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell, an auxiliary electrode including a lithium reservoir, and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell.

The invention discloses a machine room lead acid battery on-line monitoring management system. The system comprises a storage battery, a management layer which is used for remote monitoring of work states of lead acid batteries in communication base stations, remote control and management of battery cell charging and discharging, and battery maintenance, repair and check discharging, a data communication layer which is used for data communication and transmission between a data center and a machine room, a data collection layer which is used for acquiring voltage, current, temperature and internal resistance data of the storage battery in the machine room, receiving an instruction from the data center, carrying out charging and discharging management and carrying out storage battery discharging, maintenance and repair, and a storage battery maintenance device which is used for repairing a faulted battery, recovering a battery capacity and reducing storage battery internal resistance. The system can realize real-time detection of voltage and internal resistance of each cell of the storage battery, data display, fault alarm and on-line automatic repair of a battery cell.

An all-solid lithium secondary battery which uses a sulfide-based solid electrolyte material and has a power-generating element that has formed therein an oxide layer containing substantially no moisture, which is produced by oxidation of the sulfide-based solid electrolyte material in a zone where the electrolyte-containing layer containing at least the sulfide-based solid electrolyte material is in contact with an external air.

Methods for making a recycled or refurbished electrode material for an energy-storage device are provided. One example method comprises harvesting a lithium-deficient electrode material from a recycling or waste stream, and replenishing at least some lithium in the lithium-deficient electrode material. A second example method comprises breeching an enclosure of a cell of an energy storage device, replenishing at least some lithium in a lithium- deficient electrode material of the cell, and sealing the enclosure of the cell.

The present disclosure relates to a method for prelithiation, and in particular, to a method for prelithiation that predopes lithium into at least one unit cell uniformly in large amounts. According to an aspect of the present disclosure, there is provided a method for prelithiation including an preparing at least one unit cell, the unit cell comprising a cathode, an anode, and a separator interposed between the cathode and the anode, disposing the prepared at least one unit cell in a reaction tank, and connecting electrodes having the same polarity, adding an electrolyte solution into the reaction tank, disposing a lithium metal plate in the electrolyte solution, and connecting the lithium metal plate to the anode, and doping the anode.

The invention discloses a method for prolonging the service life of a lead-acid storage battery or a battery pack. The method comprises the steps that positive and negative poles of the lead-acid storage battery or the battery pack are reversed in polarity and undergo later charging or discharging operations, and the total times of the accumulated operations is greater than or equal to 1. By adopting the method, the service life of the lead-acid storage battery or the battery pack can be remarkably prolonged.

The invention discloses a sodium supplementing method for a sodium-ion battery. The sodium supplementing method includes: mixing a metal element and a sodium salt according to a certain molar ratio, adding the mixture as the anode additive into an anode active material to prepare a sodium-ion battery anode plate, and assembling into a battery; in a battery formation stage, controlling an initial charge voltage range to allow the metal element to have complete reaction with the sodium salt so as to release sodium ions from the anode additive to a cathode plate to form an SEI (solid electrolyte interphase) film; controlling a battery cyclic charge-discharge voltage range to allow the sodium-ion battery to enter a normal charge-discharge use state, wherein the metal element in the additive exists in the battery in the form of a metal compound. The sodium supplementing method for the sodium-ion battery has the advantages that the loss of active sodium ions in the anode material is reduced, the initial coulombic efficiency of the sodium-ion battery is increased, and the method is safe, practical and convenient to operate.

A novel design has been invented for redox flow batteries. Different from the single-membrane, double-electrolyte redox flow battery as a basic structure, the design of the present invention involves double-membrane (one cation exchange membrane and one anion exchange membrane), triple-electrolyte (one electrolyte in contact with the negative electrode, one electrolyte in contact with the positive electrode, and one electrolyte positioned between and in contact with the two membranes) as the basic characteristic. The cation exchange membrane is used to separate the negative or positive electrolyte and the middle electrolyte, and the anion exchange membrane is used to separate the middle electrolyte and the positive or negative electrolyte. This particular design physically isolates, but ionically connects, the negative electrolyte and positive electrolyte. The physical isolation offers a great freedom in choosing redox pairs in the negative electrolyte and positive electrolyte, making high voltage of redox flow batteries possible. The ionic conduction not only makes the design functional, but also drastically reduces the overall ionic crossover between negative electrolyte and positive one, leading to high columbic efficiency.

The invention discloses a lithium ion battery positive plate capable of supplementing lithium and a lithium ion battery containing this positive plate. This positive pate can provide the lithium source at the first charging, thereby placing the effect of compensating the lithium consumption when the positive and the negative form an SEI film, the first charging/discharging efficiency and the cycle performance are promoted, and the charging capacity and the energy density can be promoted, the lithium ion battery positive plate is especially suitable for the negative system with the low first charging/discharging efficiency, such as: the negative system containing silicon, silicon alloy, silicon oxide, or tin, tin alloy, and tin oxide.

The invention provides a formation method of a lead-acid storage battery. The method comprises the steps of firstly, carrying out multi-stage constant-current charge and constant-current discharge, and then carrying out constant-current charge, wherein the total formation time is 45h-70h, and the charge current and the discharge current are 0.05-0.2 C10. The method is used for the formation of the valve-regulated sealed lead-acid storage battery for communication; the polarization phenomenon of the battery in the formation process can be effectively relieved by the multi-stage charge and discharge under the condition that equipment investment is not increased, so that the charging efficiency and the formation efficiency are improved, and the battery capacity is guaranteed.

A method for detecting acid stratification in a battery includes the following steps: determining a first state of charge value during a load period of the battery on the basis of an estimated open-circuit voltage, determining a second state of charge value during a rest period of the battery following the load period on the basis of a measured open-circuit voltage, comparing the first state of charge value to the second state of charge value, and detecting acid stratification when a defined deviation of the first state of charge value from the second state of charge value is exceeded.

An exterior body of a secondary battery includes an insertion portion for insertion of a third electrode including metal lithium. An injection and expelling portion through which an electrolyte solution can be replaced is further provided. Specifically, a nonaqueous secondary battery includes a positive electrode, a negative electrode, an electrolyte solution, a separator, and an exterior body covering the positive electrode, the negative electrode, and the electrolyte solution. The exterior body includes a positive electrode terminal to which the positive electrode is electrically connected, a negative electrode terminal to which the negative electrode is electrically connected, and an insertion portion for insertion of a third electrode including metal lithium.

The internal resistance related value which is related to the internal resistance of a secondary battery is compared with a previously obtained relation between the internal resistance related value and battery condition to judge the battery condition of the secondary battery. Since the internal resistance related value is a value related to the internal resistance which closely depends on the battery condition, the battery condition can be judged in detail based on the above relation. And the internal resistance related value can be obtained more speedily with a predetermined method. On the other hand, when the level of the degradation of a negative electrode is low, an electrolyte is supplemented, and when the level of the degradation of the negative electrode is high, a reducing agent is added to the electrolyte to regenerate the secondary battery. With this regenerating method, the performance of the negative electrode can be recovered without degrading a positive electrode.