1644 results about "Battery electrolyte" patented technology

In one implementation, a reactive metal-water battery includes an anode comprising a metal in atomic or alloy form selected from the group consisting of periodic table Group 1A metals, periodic table Group 2A metals and mixtures thereof. The battery includes a cathode comprising water. Such also includes a solid polymer electrolyte comprising a polyphosphazene comprising ligands bonded with a phosphazene polymer backbone. The ligands comprise an aromatic ring containing hydrophobic portion and a metal ion carrier portion. The metal ion carrier portion is bonded at one location with the polymer backbone and at another location with the aromatic ring containing hydrophobic portion. The invention also contemplates such solid polymer electrolytes use in reactive metal / water batteries, and in any other battery.

The invention discloses a preparation method for commercial vanadium battery electrolyte. According to the preparation method, vanadium electrolyte is prepared by one step through a chemical method; the preparation method comprises the following steps: dissolving raw materials containing vanadium by using an alkali; adjusting a pH (Potential of Hydrogen) value by acid-alkali regulation; repeatedly precipitating the vanadium to remove impurity elements; then roasting to obtain an oxide of the vanadium; finally, dissolving the oxide of the vanadium by using concentrated sulfuric acid to obtain the vanadium electrolyte. With the adoption of the method, impurities including iron, chrome, silicon, manganese and the like can be removed effectively and a process flow is shortened; the vanadium yield is improved, the impurity content is reduced and the process flow is shortened; the product purity can also be improved. The preparation method for the commercial vanadium battery electrolyte has important meanings on production technology levels and market competitiveness of the vanadium electrolyte; the method has good economic benefits and social benefits.

A lithium battery with improved safety that utilizes one or more additives in the battery electrolyte solution wherein a lithium salt is dissolved in an organic solvent, which may contain propylene, carbonate. For example, a blend of 2 wt % triphenyl phosphate (TPP), 1 wt % diphenyl monobutyl phosphate (DMP) and 2 wt % vinyl ethylene carbonate additives has been found to significantly enhance the safety and performance of Li-ion batteries using a LiPF6 salt in EC / DEC electrolyte solvent. The invention relates to both the use of individual additives and to blends of additives such as that shown in the above example at concentrations of 1 to 4-wt % in the lithium battery electrolyte. This invention relates to additives that suppress gas evolution in the cell, passivate graphite electrode and protect it from exfoliating in the presence of propylene carbonate solvents in the electrolyte, and retard flames in the lithium batteries.

The invention relates to a preparation method of a vanadium battery electrolyte solution with high purity and high concentration. The vanadium battery electrolyte solution is different from a traditional vanadium electrolyte solution with vanadium pentoxide as raw material; through the method, a qualified vanadium solution produced by a vanadium factory is adopted as raw material, steps of removing impurities, precipitating vanadium, reducing, extracting and removing oil are carried out, after carrying out processes of four-step impurity removal and one-step reduction, the impurities in the electrolyte solution are effectively removed, and the all-vanadium solution flow battery vanadyl sulfate electrolyte solution with high purity and high concentration and with the concentration of 1-4 M is obtained. The method adopts the initial vanadium solution as the raw material, has the advantages of low cost, simple preparing procedures, and mild reaction conditions, allows the obtained electrolyte solution product to have high purity, and is suitable for application in an all-vanadium solution flow battery.

The invention discloses an electronic cigarette comprising a cigarette-shaped outer shell. A sucking opening is formed in the rear end of the outer shell. A battery and an electronic atomizer are respectively arranged at the front portion inside the outer shell and at the rear portions inside the outer shell, an air stream sensing switch is further arranged in the outer shell, an air stream inlet is formed in the position, corresponding to the air stream sensing switch, of the outer shell, and an absorbing layer and / or a sealing layer preventing battery electrolyte from flowing back are / is arranged between the battery and the electronic atomizer. In the using process, once the battery electrolyte of the battery leaks, the absorbing layer and / or the sealing layer preventing the battery electrolyte from flowing back can absorb or separate leaked battery electrolyte, the battery electrolyte is prevented from flowing back to the electronic atomizer along with air steam and even being sucked by a user, product using safety is guaranteed, and accidents are avoided.

An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are provided. The electrolyte includes a non-aqueous organic solvent, lithium salt, and an additive that is either a dicarboxylic acid anhydride and a halogenated ethylene carbonate or a diglycolic acid anhydride and a halogenated ethylene carbonate.

The invention discloses a high-capacity lithium-ion battery electrolyte of considering high-and-low temperature performance. The electrolyte comprises a non-aqueous solvent, lithium hexafluorophate, a negative film-forming additive, an inflatable inhibition additive and a low-impedance additive, wherein the negative film-forming additive is prepared from fluoroethylene carbonate which accounts for 3%-15% of total mass of the electrolyte; the inflatable inhibition additive is prepared from one or two of 1,3-propene sultone or anhydride compounds which account for 0.3%-5% of total mass of the electrolyte; and the low-impedance additive is prepared from one or two of lithium difluorophosphate and difluoride phosphate lithium oxalate which account for 0.2%-3% of total mass of the electrolyte. The electrolyte is suitable for a high-nickel positive electrode and silicon-carbon composite negative electrode lithium-ion battery; the high-temperature storage performance and the low-temperature discharge performance of the lithium-ion battery are improved while the room-temperature cycle performance is considered; and meanwhile, the invention further provides a preparation method of the electrolyte and the high-capacity lithium-ion battery of using the electrolyte.

The present invention relates to a method to produce high concentration full vanadium ion oxidation and reduction liquid flow battery (vanadium battery) electrolyte, which produces 5-6mol / L vanadium battery electrolyte by proportionally adding organic-inorganic compound stabilizing agents. The present invention has the advantages of simple technical method, convenient operation and easy raw material acquisition, produces stable high-concentration vanadium battery electrolyte with excellent electrochemical reversibility and electrical conductivity approximate to conventional 2mol / L electrolyte and realizes battery charge and discharge.

An electrolyte membrane having a porous base material having pores filled with a first polymer capable of conducting a proton, wherein the porous base material comprises at least one second polymer selected from the group consisting of polyimides and polyamides; and a fuel cell, particularly a solid polymer fuel cell, more specifically a direct methanol polymer fuel cell, using the electrolyte membrane. The electrolyte membrane is excellent in the inhibition of permeation of methanol, exhibits no or reduced change in its area, and is excellent in proton conductivity.

The invention provides an electrolyte material (LiaPbScMd) for an all solid-state lithium secondary battery and a preparation method for the electrolyte material. The electrolyte material, shown in a formula (I) LiaPbScMd, for the all solid-state lithium secondary battery is prepared from Li2S, P2S5 and a dopant, wherein the dopant is selected from one or more of compounds of nonmetal elements in main groups III, IV, V, VI and VII of lithium and compounds formed from at least two of the nonmetal elements in the main groups III, IV, V, VI and VII; in the formula (I), M is selected from one or more of the nonmetal elements in the main groups III, IV, V, VI and VII, a is more than 0 and less than or equal to 10, b is more than 0 and less than or equal to 5, c is more than 0 and less than or equal to 15, and d is more than 0 and less than 1. The electrolyte material for the all solid-state lithium secondary battery has high electrical conductivity, high electrochemical stability and the like, and is favorable for application. The invention also provides the all solid-state lithium secondary battery.

A method of purifying lithium hexafluorosphate that allows to purify lithium hexafluorophosphate, useful as lithium secondary cell electrolyte, organic synthesis medium or the like, to an extremely high purity is provided. Lithium hexafluorophosphate containing harmful impurities such as oxyfluoride, lithium fluoride is purified by adding phosphoric chloride. The purification is performed in the presence of phosphoric chloride and hydrogen fluoride of the quantity equal or superior to the equivalent amount for reacting them, and then by converting lithium fluoride to lithium hexafluorophosphate with generated phosphor pentafluoride.

The invention relates to the technical field of battery electrolytes, and in particular discloses a novel electrolyte for a power battery, which comprises the following raw materials in percent by weight: 8-15 percent of conductive lithium salt as a component A, 73-90 percent of organic solvent as a component B and 1-10 percent of additive as a component C. A sulphonate organic compound as the additive is added in the electrolyte of the common lithium ion battery, the addition of the sulphonate organic compound accounts for 1-10 percent of the weight of the electrolyte of the lithium ion power battery and is chemically compounded with 8-15 percent of conductive lithium and 75-90 percent of organic solvent to prepare the novel electrolyte for the power battery, which has better high-temperature circulating performance and is suitable for the power battery. A power battery especially using lithium manganese oxide as a cathode material can prevent Mn smelted at high temperature from being attracted on the surface of the cathode, thereby inhibiting the impedance rise, effectively improving the circulating periodicity and greatly prolonging the circulating service life.

The invention belongs to the technical field of lithium-ion battery electrolytes, and particularly relates to a high-voltage lithium-ion battery electrolyte. The high-voltage lithium-ion battery electrolyte comprises non-aqueous solvents, lithium salt and additives, wherein the additives comprise the mixture of fluoro phosphonitrile, fluoro-ether and unsaturated olefinic sultone. A lithium-ion battery using the high-voltage lithium-ion battery electrolyte is long in cycle life under the high voltage and small in internal resistance change. The high-voltage lithium-ion battery electrolyte is simple in preparing technique, easy to realize, and broad in market prospect.

In order to obtain an electrolyte membrane-electrode assembly using a thin electrolyte membrane, the present invention provides a production method of an electrolyte membrane-electrode assembly comprising: a step of forming a hydrogen ion-conductive polymer electrolyte membrane on a base material; a treatment step of reducing adhesion force between the base material and the hydrogen ion-conductive polymer electrolyte membrane; a step of separating and removing the base material; and a step of bonding a catalyst layer and a gas diffusion layer onto the hydrogen ion-conductive polymer electrolyte membrane, and, in order to obtain an electrolyte membrane-electrode assembly which has a catalyst without clogging and is excellent in electrode characteristics, the present invention provides a production method of an electrolyte membrane-electrode assembly comprising: a step of bonding a hydrogen ion-conductive polymer electrolyte membrane and a catalyst layer via a coating layer; a step of removing the coating layer; and a step of obtaining an electrolyte membrane-electrode assembly by forming a gas diffusion layer on the catalyst layer.

The invention relates to the technical field of lithium ion electrolytes, and in particular relates to a lithium-ion battery electrolyte with both high and low temperature performances. The electrolyte comprises lithium hexafluorophosphate, mixed organic solvents, filming additives, additives for improving the dielectric constant and the low temperature infiltration capability, and a lithium salt type additive, wherein the mixed organic solvents comprise a carbonic ester solvent and a linear carboxylic ester solvent; the linear carboxylic ester solvent in the mixed organic solvents is one or a mixture of more than two of ethyl propionate, propionic acid n-propyl ester, n-propyl acetate, acetic acid n-butyl ester and isobutyl acetate; and the additives for improving the dielectric constant and the low temperature infiltration capability are one or a mixture of more than two of fluoro ethylene carbonate, difluoro ethylene carbonate and 4-trifluoromethyl ethylene carbonate. A battery prepared from the lithium-ion battery electrolyte with both high and low temperature performances is long in service life, and both the good low temperature discharge performance of the battery is ensured, and the storage performance of the battery at the high temperature of 60 DEG C is effectively considered.

Direct reaction fuel cells (10) with cross-flow of an electrolyte mixture through thick, porous electrodes (12, 18) that contain a mixture of catalyst particles and that rotate to generate Taylor Vortex Flows (54) and Circular Couette Flows (56) in electrolyte chambers (24) are disclosed.

The present invention relates to additives for electrolytes of lithium ion secondary batteries that include one or more of the following: 1,3-propane sultone, succinic anhydride; ethenyl sulfonyl benzene, and halobenzene. It can also include biphenyl, cyclohexylbenzene; and vinylene carbonate. The weight of said 1,3-propane sultone is between 0.5 wt. % and 96.4 wt. %, said succinic anhydride is between 0.5 wt. % and 96.4 wt. %; said ethenyl sulfonyl benzene is between 0.5 wt. % and 95.2 wt. %; and said halobenzene is between 0.5 wt. % and 95.2 wt. % of the weight of the additive. Batteries with electrolytes containing said additives have improved over-charge characteristics and low temperature properties, and reduced gas generation during charging and discharging.

Electrolyte compositions for batteries such as lithium ion and lithium air batteries are described. In some embodiments the compositions are liquid compositions comprising (a) a homogeneous solvent system, said solvent system comprising a perfluropolyether (PFPE) and polyethylene oxide (PEO); and (b) an alkali metal salt dissolved in said solvent system. In other embodiments the compositions are solid electrolyte compositions comprising: (a) a solid polymer, said polymer comprising a crosslinked product of a crosslinkable perfluropolyether (PFPE) and a crosslinkable polyethylene oxide (PEO); and (b) an alkali metal ion salt dissolved in said polymer. Batteries containing such compositions as electrolytes are also described.

The invention discloses polymer electrolyte and a preparation method and application thereof. The provided polymer electrolyte consists of a high polymer matrix, lithium salt, an organic small molecular plasticizer and / or inorganic superfine nanoparticles. The provided polymer electrolyte has high ionic conductivity, high toughness and high-temperature resistance, and when the polymer electrolyte is used as lithium ion secondary battery electrolyte, the structure of a commercial lithium ion secondary battery is simplified, the structure of the lithium ion secondary battery is enriched, and simultaneously the potential safety hazard in the traditional lithium ion secondary battery can be effectively avoided. Meanwhile, in the process of preparing a lithium battery from the provided polymer electrolyte, the conventional commercial micron-sized graphite anode can be replaced by a metal lithium foil, so the prepared novel lithium ion battery has higher energy density and power density.

The invention generally encompasses phosphonium ionic liquids and compositions and their use in many applications, including but not limited to: as electrolytes in electronic devices such as memory devices including static, permanent and dynamic random access memory, as battery electrolytes, as a heat transfer medium, fuel cells and electrochromatic devices, among other applications. In particular, the invention generally relates to phosphonium ionic liquids, compositions and molecules possessing structural features, wherein the molecules exhibit superior combination of thermodynamic stability, low volatility, wide liquidus range and ionic conductivity. The invention further encompasses methods of making such phosphonium ionic liquids, compositions and molecules, and operational devices and systems comprising the same.

The invention relates to the technical field of lithium-ion battery electrolytes, in particular to a high-voltage lithium-ion battery electrolyte. The high-voltage lithium-ion battery electrolyte comprises non-aqueous solvent, lithium salt and an additive. The additive comprises the mixture of phosphonitrile, annular sulphate and hydrogen fluoroether. The high-voltage lithium-ion battery electrolyte can form a film on the surface of an electrode through the synergistic effect of the phosphonitrile, the annular sulphate and the hydrogen fluoroether, oxygenolysis of the electrolyte is restrained, and the cycle performance of 4.5 V and 5.0 V high-voltage lithium-ion batteries is obviously improved.

The invention provides a fully solid-state lithium secondary battery electrolyte material, which contains Li2S, a first sulfide, a second sulfide and a dopant, wherein the first sulfide is GeS and / or GeS2; the second sulfide is one or more of FeS, FeS2, SiS2, P2S5, B2S3, CeS2 and Al2S3; and the dopant is a lithium salt or an oxide capable of forming raw acid. According to the fully solid-state lithium secondary battery electrolyte material, the lithium ion conductivity of the fully solid-state lithium secondary battery electrolyte material at room temperature is increased by using the first sulfide, the second sulfide and the dopant. Experiments show that the lithium ion conductivity of the fully solid-state lithium secondary battery electrolyte material reaches up to 10<-3> S.cm<-1> at the room temperature, the conductivity is better, and the application is facilitated. In addition, the lithium ion conductivity of the fully solid-state lithium secondary battery electrolyte material has better electrochemical stability. The invention provides a preparation method of the lithium ion conductivity of the fully solid-state lithium secondary battery electrolyte material and a fully solid-state lithium secondary 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 discloses a battery electrolyte additive and electrolyte which give consideration to high and low temperature properties as well as a nickelic ternary lithium ion battery. The additive disclosed by the invention contains a fluorine-containing phenyl sulfonate type compound additive A with a structure shown in a formula I, an annular sulfonate type additive B with a structure shown ina formula II and the conventional anode film formation additives, and the battery electrolyte giving consideration to high and low temperature properties comprises electrolyte lithium salt, a nonaqueous organic solvent and the additive disclosed by the invention. The electrolyte disclosed by the invention can effectively improve performance of a nickelic ternary lithium ion power battery by virtue of synergistic effect produced by joint use of the three kinds of additives and by combining the advantages of electrolyte additives of different components and respectively has good electrochemicalperformances such as cycle performance, rate capability, storage performance and safety performance under high temperature and low temperature conditions, so that the problem that an existing batterycan not give consideration to high and low temperature properties is solved.

The invention relates to a method for electrolyte-injecting a battery, which comprises the steps that: a battery shell is vacuumized; then non-aqueous electrolyte is injected into the battery shell by a filling machine; after a first electrolyte-injection is finished, the electrolyte content of the first electrolyte-injection is above 60 percent of the total weight of the electrolyte injected; the battery shell is sealed to carry out centrifugal sinking; then the seal is taken to vacuumize; a second electrolyte-injection is carried out; the electrolyte content of the second electrolyte-injection is the content which injects the battery shell full. By using the method of the second electrolyte injection, the invention largely enhances the electrolyte injection volume, which enhances by 15 percent-25 percent of the electrolyte injection volume compared with the prior art.

A Li-ion battery electrolyte contains lithium salt, ionic liquid and a non-aqueous solvent, wherein the anion contained in the ionic liquid is showed by formula (1). A Li-ion battery comprises an electrical core and the above electrolyte, which can retard combustion of organic solvents. The Li-ion battery using the electrolyte can suppress capacity fade at low temperature, and can reduce the amount of gas generated by the electrolyte at high temperature, thereby effectively preventing battery expansion and improving the high-temperature performance of the battery.

Four electrodes or three electrodes system are adopted in the invention. Carbon electrode is in sue for working electrode and auxiliary electrode for loading test current, and saturated calomel electrode is in use for reference electrode for testing response voltage. In testing, exchange membrane is placed in middle of connection hole corresponding to two electrolytic cells. Transverse resistance is measured by using AC impedence method. Conductivity of membrane is calculated out from thickness of membrane and area of the connection hole. The invented method prevents polarization issue occurred in DC test method is applicable to testing transverse conductivity of diaphragms used in other fuel cells and lithium ion cells.

A method of making a solid electrolyte-YSZ product, where the method includes the step of providing a powdered mixture of zirconia, yttria and about 2%, by wt., or less of a metal oxide, where yttria-stabilized zirconia is not added to the mixture. The method also includes sintering the powdered mixture at about 1500° C. or less, for about 5 hours or less, to form a reaction sintered YSZ. Also, a method of making a fuel cell electrolyte that includes the step of forming a green body that includes zirconia, yttria and about 2%, by wt., or less of a metal oxide, where yttria-stabilized zirconia is not added to the green body. The method also includes shaping the green body into a form of the electrolyte, and sintering the green body at about 1500° C. or less to form a reaction sintered yttria-stabilized zirconia and metal oxide electrolyte.

The invention belongs to the technical field of lithium-ion batteries, in particular to a lithium-ion battery electrolyte and a lithium-ion battery. Three additives, namely an additive A, an additiveB and an additive C, are added in the in the electrolyte, wherein the additive A can improve the cycle performance of a high-nickel material battery and inhibit the battery from increasing internal resistance in high-temperature storage and cyclic processes, the charging and discharging efficiency of the battery in charging and discharging processes can be improved, and self-discharging is reduced; the additive B can form a thin and compact SEI membrane on a negative electrode interface, so that a high-nickel material has relatively low interface impedance when matching with a high-volume high-compaction negative electrode material, and lithium-ions are favorably diffused; the additive C can inhibit a high-nickel battery from producing too much gas so that a battery explosion-proof valveis sprung in the long-term storage process at high temperature, and meanwhile has positive influence on the cycle life of the battery; therefore, the electrolyte guarantees that the battery has a relatively good cyclic life, the internal resistance of the battery in the use process is reduced, and when the battery is used at high temperature, potential safety hazards, which appear as the explosion-proof valve is sprung, are avoided.