3382 results about "Solid state electrolyte" patented technology

An electronic device includes a substrate, a functional element formed on the substrate, an electrolytic element provided on at least one of a side of the substrate on which the functional element is formed and a side of the substrate opposite to the side on which the functional element is formed, configured including a solid-state electrolyte layer and a pair of electrodes for holding the solid-state electrolyte layer in between, and capable of applying electrolysis to water, and a sealing member for sealing the functional element and the electrolytic element.

Solid-state, ion-conducting batteries with an ion-conducting, solid-state electrolyte. The solid-state electrolyte has at least one porous region (e.g., porous layer) and a dense region (e.g., dense layer). The batteries are, for example, lithium-ion, sodium-ion, or magnesium-ion conducting solid-state batteries. The ion-conducting, solid-state electrolyte is, for example, a lithium-garnet material.

The present invention provides a ceramic material capable of demonstrating compactness and Li ion conductivity to an extent that enables the use of the ceramic material as a solid-state electrolyte material for a lithium secondary battery, or the like. A ceramic material containing Li, La, Zr, Nb and / or Ta, as well as O and having a garnet-type or garnet-like crystal structure is used.

Embodiments of the present invention provide an all-solid state lithium ion battery composite positive electrode material, which comprises a positive electrode active material and a cladding layer arranged on the surface of the positive electrode active material, the positive electrode active material is one or a plurality of materials selected from a lithium cobalt oxide, lithium nickelate, lithium manganate, lithium iron phosphate, lithium nickel cobalt manganese, vanadium pentoxide, molybdenum trioxide and titanium disulfide, and the cladding layer material is one or a plurality of lithium-containing transition metal oxides. According to the present invention, with the cladding layer, formation of the space charge layer can be effectively inhibited, the electrode / inorganic solid state electrolyte interface can be improved, and the interface resistance of the all-solid state lithium ion battery can be easily reduced so as to improve cycle stability and durability of the all-solid state lithium ion battery. Embodiments of the present invention further provide a preparation method for the all-solid state lithium ion battery composite positive electrode material, and an all-solid state lithium ion battery containing the all-solid state lithium ion battery composite positive electrode material.

The invention relates to solid-state electrolytes, in particular to a polycarbonate all-solid-state polymer electrolyte, an all-solid-state secondary lithium battery made of the same and preparation and application thereof. The all-solid-state polymer electrolyte is prepared from polycarbonate macromolecules, lithium salt and a porous supporting material; the thickness is 20-800 micrometers, the mechanical strength is 10-80 MPa, the room temperature ion conductivity is 2*10<-5>S / cm-1*10<-3>S / cm, and the electrochemical window is higher than 4V. The all-solid-state polymer electrolyte is easy to prepare and form, good in mechanical property, high in ion conductivity and wide in electrochemical window; meanwhile, the solid-state electrolyte effectively inhibits growth of negative electrode lithium dendrites and improves interface stability and long circulation performance.

A practical solid-state battery composed primarily of ceramic or glass materials and containing no liquid, gel or polymeric electrolytes. The invention utilizes solid-state electrolyte materials with solid-state anode and cathode materials along with construction concepts utilized in the multi layered ceramic capacitor (MLCC) industry to result in a compact primary or secondary battery.

The invention discloses a preparation method of an all-solid polymer electrolyte through in-situ ring opening polymerization of an epoxy compound, and an application of the all-solid polymer electrolyte in an all-solid battery. The preparation method is characterized in that a liquid-state epoxy compound, a lithium salt, a battery additive and the like are employed as precursors and are injected into between a positive pole sheet and a negative pole sheet of the battery, and under a heating condition, in-situ polymerization solidification is carried out to form the all-solid polymer electrolyte, and furthermore, the all-solid battery is produced. The ionic conductivity at room temperature of the all-solid polymer electrolyte can reach from 1*10<-5> S / cm to 9*10<-3> S / cm and electric potential window is 3.5-5 V. The all-solid polymer electrolyte is prepared through the in-situ copolymerization method, so that the all-solid polymer electrolyte has excellent contact with electrodes, thereby greatly improving interface compatibility of the solid-state battery, reducing interface wetting and modification steps of the solid-state battery, reducing production cost of the solid-state battery and improving performances of the solid-state battery. The invention also discloses an all-solid polymer lithium battery assembled from the all-solid polymer electrolyte.

The present invention provides a composite quasi-solid-state electrolyte, a composite quasi-solid-state electrolyte membrane, preparation methods of composite quasi-solid-state electrolyte and the composite quasi-solid-state electrolyte membrane, and a lithium battery or a lithium ion battery containing the composite quasi-solid-state electrolyte membrane. The composite quasi-solid-state electrolyte comprises a solid electrolyte, a lithium salt-containing liquid electrolyte, inorganic nanoparticles and a binder, wherein the static electricity or functional groups on the surface of the inorganic nanoparticles can adsorb the electrolyte so as to make the composite quasi-solid-state electrolyte have strong adsorption capacity and strong liquid retention ability, and the inorganic nanoparticles can adsorb the lithium salt so as to change the lithium ion conduction mechanism, reduce the interfacial resistance between the liquid electrolyte and the solid-state electrolyte, change the deposition morphology of lithium, hinder the formation of lithium dendrite, and reduce the pulverization of lithium. In addition, by adding the solid electrolyte, the composite quasi-solid-state electrolyteof the present invention can maintain the high conductivity and can effectively reduce the content of the liquid electrolyte so as to improve the safety of the battery.

The invention discloses a preparation method of an improved room temperature electron ion fast transfer electrode slicefor a solid-state secondary lithium battery. The method comprises the following steps: (1) evenly mixing an active material, a conductive agent and a fast ion conductor according to a certain proportion; (2) adding a certain amount of a binder into the mixture, and mixing uniformly to obtain a uniform slurry; and (3) preparing the slurry into slices, and drying to obtain the required electrode slice. The preparation method of the electrode slice preparation uses the fast ion conductor material with high temperature high lithium ion conductivity; the material can play the role of increasing the contact area between the active particles and solid electrolyte, and he form a three-dimensional electron and lithium ion transport network, so as to ensure the rapid conduction of the electrons in the electrode also improve the transmission rate of lithium ions between the active particles and electrolyte. Therefore, the preparation method is beneficial to reducing the interface impedance among the active particles in the electrode slice and between the active particles and the solid electrolyte, thereby increasing the power rate performance of the solid-state secondary lithium battery.

The application relates to the field of energy storage materials, and discloses a combined electrode with ultrahigh electron and ionic conductivity and a preparation method thereof. The combined electrode is formed in a manner that a battery active material is uniformly tied in a three-dimensional multi-hole network formed by carbon nano tubes which are connected in a crossing manner, and meshes and the surface of the active material are filled or coated with a solid electrolyte material. According to the combined electrode, the carbon nano tubes, which are communicated with one another, can form an ultrahigh electrical transmission network, on the one hand, a solid electrolyte can provide the ultrahigh lithium-ion transmission capacity while not influencing the connection of the carbon nano tubes and the conductive capacity of the electrode; on the other hand, the three-dimensional network formed by the carbon nano tubes is also fixed by virtue of the solid electrolyte, the formation of a solid electrolyte interface is controlled, and an active material is protected under the high charge-discharge voltage. The combined electrode has the high reversible capacity and the enhanced rate capability, and can meet the requirement of a power automobile or a mixed power automobile.

The invention discloses a metal lithium negative electrode of a lithium battery. A solid-state electrolyte protection layer is on the surface of the metal lithium negative electrode. By performing electrochemical pretreatment on the lithium negative electrode, an efficient and stable solid-state electrolyte interface membrane is introduced to the surface of a lithium sheet; in the repeated deposition and separation processes of lithium ions, the solid-state electrolyte protection layer can suppress appearance of dendritic crystals and improve safety performance of the battery; in addition, the electrolyte and metal lithium also can be isolated to protect the lithium metal from being corroded by the electrolyte; by virtue of an electroplating process and screening of electrolyte types, effective protection of the metal lithium negative electrode is realized, and the cycle life of the lithium metal battery is prolonged; and compared with an unprocessed lithium negative electrode, the metal lithium negative electrode protected by the solid-state electrolyte layer can effectively suppress appearance of dendritic crystal-shaped lithium sediments, reduce secondary reactions of the electrolyte and the metal lithium, and improve cycling efficiency and cycling stability, thereby prolonging the cycle life of the lithium metal battery which takes the metal lithium as the negative electrode.

The invention discloses a high-temperature manganic acid lithium cathode material and a preparation method thereof. Single crystal particles of the cathode material consists of a matrix and solid electrolyte which clads the surface of the matrix; the matrix is spinel manganic acid lithium which is doped with anions and cations; and the chemical formula of the material is Li1.05MxMn2-xO4-yQy, wherein M represents the doped cations; and Q represents the doped anions. The preparation method comprises the following steps of: firstly, preparing the spinel manganic acid lithium which is doped with the anions and the cations through solid phase reaction; secondly, synthesizing by using a molten-salt growth method to control a crystal form, and preparing the spinel manganic acid lithium having the particle size of 3 to 5 microns and the characteristic of an octahedron single crystal; and finally, cladding the spinel manganic acid lithium by using the solid electrolyte after the crystal form is controlled. The cathode material has high high-temperature performance and high rate cycle performance, and can be applied to electric automobiles or other kinds of lithium ion power batteries.

A material capable of producing a sintered body of cubic system garnet type Li7La3Zr2O12 as a solid electrolyte having specified ion conductivity by firing at relatively low temperature in short time. The material for the solid electrolyte is an oxide containing Li, La, Zr and Bi, and the oxide has a cubic system garnet crystal structure where La sites are partly or entirely substituted by Bi.

A lithium ion battery having an anode, a solid electrolyte, and a cathode. The cathode includes an electrode active material, a first lithium salt, and a polymer material. The solid electrolyte can include a second lithium salt. The solid electrolyte can include a ceramic material, a lithium salt, and a polymer material.

The invention discloses a preparation method of a flexible super capacitor based on carbon cloth. The preparation method comprises the following steps of: firstly, growing carbon nanometer particles, carbon nanometer tubes, zinc oxides or tungsten oxide on the carbon cloth, or generating molybdenum dioxide on the carbon cloth; then, preparing manganese oxide or conductive polymers on the substances grown or generated on the carbon cloth for forming electrode materials; and finally, overlapping two electrode materials through solid electrolytes, separating the two electrode materials through a diaphragm and preparing the solid super capacitor. The flexible super capacitor prepared by the method provided by the invention has good electrochemical characteristics and the bending performance and has good application prospects in energy storage aspects.

An electrode active material layer includes an electrode active material and a sulfide solid state electrolyte material which is fused to a surface of the electrode active material and is substantially free of bridging sulfur.

The present disclosure relates to a nano-engineered coating for cathode active materials, anode active materials, and solid state electrolyte materials for reducing corrosion and enhancing cycle lifeof a battery, and processes for applying the disclosed coating. Also disclosed is a solid state battery including a solid electrolyte layer having a solid electrolyte particle coated by a protective coating with a thickness of 100 nm or less. The protective coating is obtained by atomic layer deposition (ALD) or molecular layer deposition (MLD). Further disclosed is a solid electrolyte layer for asolid state battery, including a porous scaffold coated by a first, solid electrolyte coating. The solid electrolyte coating has a thickness of 60 mu m or less and a weight loading of at least 20 wt.% (or preferable at least 40 wt.% or at least 50 wt.%). Further disclosed is a cathode composite layer for a solid state battery.

The invention discloses an organic-inorganic composite electrolyte membrane having a double layer structure including a first layer and a second layer, wherein each of the first layer and the second layer is prepared from slurry comprising the following same components: an inorganic solid electrolyte, lithium salt, a film forming agent, a conductive lithium ion polymer, a plasticizer, and a solvent; herein, the content of inorganic solid electrolyte in the first layer is higher than that in the second layer, and the content of conductive lithium ion polymer in the first layer is less than thatin the second layer. The invention also discloses a battery having the organic-inorganic composite electrolyte membrane. The membrane has good flexibility and high conductivity, can satisfy differentdemands of a cathode and an anode in a lithium ion battery at the same time, can inhibit growth of lithium dendrites, and improves comprehensive performance of the battery.

The invention relates to a modified lithium-based composite negative material for a solid state battery and preparation and application of the material. The modified lithium-based composite negative material comprises 50-95 parts of lithium and 5-50 parts of a modified additive by weight; and the modified additive comprises one or multiple nitride or fluoride. The preparation method comprises thatthe lithium and modified additive are mixed, heated to 180-400 DEG C, stirred uniformly, and cooled to the room temperature; and the modified composite negative material is used to the solid state battery, and combined with a solid electrolyte. Compared with the prior art, the lithium metal is mixed with the modified additive by mixing in a heating fusing way, the surface energy of the lithium metal can be reduced effectively, elements including nitrogen and fluorine are introduced in a controllable way, the interfacial resistance between the solid electrolyte and lithium cathode is reduced effectively, the limit current that can be born by the solid electrolyte is increased, the recyclable charge and discharge capacity is improved, and the solid electrolyte and cathode interface is stable for a longer time in the long circulation process.

The invention discloses a high voltage-resistant multi-stage structure composite solid-state electrolyte and its preparation method and use in a solid-state lithium battery. The lithium battery utilizes a multi-stage structure solid-state electrolyte containing different components. A polymer electrolyte with excellent electrode interface compatibility is used as an electrolyte in the negative electrode side. A high voltage-resistant polymer electrolyte is used as an electrolyte in the positive electrode side. A polymer electrolyte or an inorganic electrolyte with high ionic conductivity is used as a middle layer. The multi-stage structure solid-state electrolyte has advantages such as high mechanical properties, high ionic conductivity, a wide electrochemical window, excellent electrode interfacial compatibility and lithium dendrite growth inhibition of different components. Compared with the traditional liquid lithium ion battery, the battery with the multi-stage composite solid-state electrolyte has higher safety and higher energy density.

One or more interfacial layers in contact with a solid-state electrolyte and hybrid electrolyte materials. Interfacial layers comprise inorganic (e.g., metal oxides and soft inorganic materials) or organic materials (e.g., polymer materials, gel materials and ion-conducting liquids). The interfacial layers can improve the electrical properties (e.g., reduce the impedance) of an interface between an a cathode and / or anode and a solid-state electrolyte. The interfacial layers can be used in, for example, solid-state batteries (e.g., solid-state, ion-conducting batteries).

An all-solid-state cell, which includes a lithium-containing anode, a cathode and a lithium ions-conducting solid-state electrolyte separator situated between the anode and the cathode. To improve the safety and cycle stability of the cell, the cathode includes a composite material including at least one lithium titanate and at least one lithium ions-conducting solid-state electrolyte. Furthermore, the invention relates to a corresponding all-solid-state battery and a mobile or stationary system equipped with it.

The invention provides a composite solid electrolyte and a preparation method thereof, a flexible all-solid-state battery and a preparation method of the flexible all-solid-state battery and a wearable electronic device. The composite solid electrolyte comprises a ceramic-based solid electrolyte and a first polymer-based solid electrolyte, wherein the content of the ceramic-based solid electrolyte is 20-90wt% of total weight of the composite solid electrolyte. The composite solid electrolyte provided by the invention has good mechanical property, high ionic conductivity at a room temperature, good heat stability and electrochemical stability and high safety and can be effectively prevented from being perforated by lithium dendrites, and a good interface contact is formed by the composite solid electrolyte and a composite positive electrode, thereby obtaining the flexible all-solid-state battery which is high in area specific capacity and energy density, relatively small in battery internal resistance and high in flexibility and can be bent and cut and of which use is not affected.

The invention provides a solid-state composite metal lithium negative electrode. The solid-state composite metal lithium negative electrode consists of a composite layer and a solid-state electrolyteprotecting layer, wherein the composite layer consists of metal lithium and lithium-favoring framework material; the solid-state electrolyte protecting layer comprises an inorganic solid-state electrolyte and an organic solid-state electrolyte; the composite layer of metal lithium and lithium-favoring framework material is provided by melting and lithium filling, electrochemical deposition or physical and mechanical mixing; the solid-state electrolyte protecting layer is applied to the surface of the composite layer by impregnating, scrape coating, rotary coating, spray coating or spattering.Compared with the common lithium piece negative electrode, the solid-state composite metal lithium negative electrode has the advantages that the problem of volume expansion of the negative electrodeis relieved, the deposition behavior of the metal lithium can be regulated and controlled, the growth of lithium dendrites can be inhibited, the safety property of a metal lithium battery is improved,and the cycle life of the metal lithium battery is prolonged; in the testing process of a lithium and copper semi-battery, the volume is expanded by 1 to 20% in the charge and discharge process, theobvious dendrites do not occur in the 20 to 5000 cycles of the battery, and the utilization rate is increased to 80 to 99.9999%.

The invention discloses a nanostructured quasi-solid electrolyte applied to lithium ion batteries or lithium sulfur batteries and a preparation method and application thereof. The nanostructured quasi-solid electrolyte is a macro solid-state electrolyte material which is formed by an inorganic-organic hybrid framework material adsorbing ion conductive agent. The preparation method of the nanostructured quasi-solid electrolyte is as follows: in protective atmosphere, the inorganic-organic hybrid framework material is soaked in the ion conductive agent and sufficiently mixed, and redundant solvent is then volatilized. The prepared nanostructured quasi-solid electrolyte with high lithium ion conductivity can be substituted for both organic electrolyte and diaphragms in conventional lithium ion batteries, and thereby safety problems caused by the leakage of the organic electrolyte can be effectively prevented; a lithium battery assembled from the electrolyte can use a metal lithium plate as a cathode.

The invention relates to a metal lithium anode with a protective coating and a preparation method based on molecule layer-by-layer self-assembly. The substance of the coating is a solid electrolyte interface membrane constructed by an assembling molecule layer and an inorganic fast ion conductor layer on an active material layer surface of the metal lithium anode. The solid electrolyte interface membrane has the following functions: (1) electrolyte solution and lithium wafers are effectively isolated and the lithium wafers are prevented from being eroded and reacted; (2) lithium ions are uniformly distributed and generation of lithium dendrites is restrained; (3) inorganic fast ion conductors can transmit the lithium ions, and membrane strength is effectively improved. Metal lithium electrode pieces protected by the protective coating are used in lithium batteries, the coulombic efficiency of the batteries can be effectively improved, and circulation life is prolonged.

The present invention discloses an inorganic-organic nano composite solid electrolyte membrane and a preparation method and application thereof. The composite solid electrolyte is a novel inorganic-organic nanocomposite combining the respective advantages of inorganic ceramic solid electrolyte and organic polymer electrolyte and is composed of a negative electrode protective layer, a support layerand a positive electrode interface layer. The support layer plays a supporting role, and the main component of the negative electrode protective layer is the inorganic solid electrolyte with good mechanical properties, which can effectively inhibit the growth of lithium dendrite; and the positive electrode interface layer is mainly composed of organic polymer electrolyte with good flexibility, ensures good contact with active materials and provides a continuous ion transport channel. In the present invention, the composite solid electrolyte with good interface compatibility is prepared by coating on both sides of the support layer, and the process is simple and efficient. The composite solid electrolyte can effectively inhibit dendritic crystal and reduces interface resistance so that a solid lithium metal battery has higher energy density and longer cycle life.

The present invention relates to a lithium-sulfur battery, which comprises a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode comprises a positive electrode current collector and a positive electrode active material involved in an electrochemical reaction, the positive electrode active material comprises a thio material, the negative electrode comprises a negative electrode current collector and a negative electrode active material selected from metal lithium, a lithium alloy, lithium-carbon and a silicon base material, a pre-lithium embedding treatment is performed on the positive electrode and / or the negative electrode when the selected thio material and the silicon base material do not contain lithium, and the electrolyte is a solid state electrolyte containing a lithium super-ion conductor material. According to the solid state lithium-sulfur battery, loss of an intermediate product lithium polysulphide during a positive electrode charge and discharge process is avoided, the solid state electrolyte has high ionic conductance so as to improve energy density and cycle life of the lithium-sulfur battery, the packaging process of the lithium-sulfur battery adopting the solid state electrolyte is simpler than the packaging process of the lithium-sulfur battery adopting the liquid state electrolyte, and the lithium-sulfur battery is easy to industrialize.

This invention relates to a solid oxide fuel cell system comprising at least one longitudinally extending tubular solid oxide fuel cell and a longitudinally extending heater mounted in thermal proximity to the fuel cell to provide heat to the fuel cell during start up and during operation as needed. The heater and fuel cell can be encased within a tubular thermal casing; the inside of the casing defines a first reactant chamber for containing a first reactant, such as oxidant. The fuel cell comprises a ceramic solid state electrolyte layer and inner and outer electrode layers concentrically arranged around and sandwiching the electrolyte layer. The outer electrode layer is fluidly communicable with the first reactant, and the inner electrode layer is fluidly isolated from the first reactant and fluidly communicable with a second reactant, such as fuel.

An electrochemical cell including a multi-layer solid-state electrolyte, a battery including the cell, and a method of forming the battery and cell are disclosed. The electrolyte includes a first layer that is compatible with the anode of the cell and a second layer that is compatible with the cathode of the cell. The cell exhibits improved performance compared to cells including a single-layer electrolyte.