22 results about "Mixed conductor" patented technology

The invention discloses a monovalent alkali metal ion doped iron-based perovskite type ceramic membrane as well as a preparation method and application thereof, and belongs to the technical field of mixed conductor oxygen permeation ceramic membrane materials. The method comprises the following steps: (1) synthesizing layered rock salt oxide M1 by adopting an EDTA-CA (Ethylene Diamine Tetraacetic Acid-Carboxylic Acid) sol-gel method; (2) mixing the M1 with other metal carbonate or oxide according to the stoichiometric ratio of the target perovskite oxide M2, and preparing a solid precursor M1 + M2 through a solid-phase reaction method; and (3) sintering the precursor into a compact ceramic membrane by using a static pressure-roasting method. According to the invention, the problem that monovalent alkali metal ions are easy to volatilize in a high-temperature solid-phase reaction is effectively solved through a process of stabilizing the alkali metal at a low temperature and then forming a film at a high temperature, and the monovalent alkali metal ions are successfully doped into iron-based perovskite crystal lattices. The prepared ceramic membrane has the advantages that the oxygen permeation flux is obviously improved while the good structural stability is maintained, and the ceramic membrane is particularly suitable for oxygen separation in an oxygen-enriched combustion process.

The invention belongs to the technical field of solid-state batteries, and discloses an alloy ion / electron mixed conductor and application thereof. The mixed conductor is prepared by taking antimony powder, lithium powder or sodium powder and at least one metal powder of lanthanum, scandium, yttrium, aluminum, gallium and indium as raw materials through ball-milling mixing, tube sealing annealing and quenching treatment. When the mixed conductor is used as an interlayer of a lithium / sodium metal negative electrode and an electrolyte in the solid-state battery, the growth of lithium / sodium dendrites can be effectively inhibited through a specific nucleation mechanism, and the utilization rate of the metal negative electrode is improved; when the conductive additive is used as a conductive additive of a silicon, red phosphorus or graphite / hard carbon negative electrode material, by virtue of high ion / electron conductivity and good potential stability, the interface side reaction is reduced, and the rate capability and the cycling stability of the negative electrode material are remarkably improved.

The invention provides an amorphous substance coated positive electrode active material as well as a preparation method and application thereof. In the invention, the amorphous substance is selected from one or more of transition metal silicide, boride, phosphide, sulfide, selenide, carbide, amorphous carbon or amorphous silicon materials. The amorphous substance coating in the invention can form a compact self-healing passivation layer at the interface of the positive electrode material, not only can inhibit oxygen precipitation under high voltage in dynamics, but also can be combined with Li alkali metal to become a mixed conductor of ions and electrons, so that the conduction performance of the electrons and lithium ions is improved, and the interface impedance is reduced. Meanwhile, the surface of the positive electrode material can be uniformly coated by a special coating mode of the amorphous substance, so that side reaction between the positive electrode material and electrolyte is effectively inhibited, a solid electrolyte membrane on the surface of the positive electrode material is stabilized, formation of microcracks in the material is reduced, and the cycling stability is improved.

The application discloses a two-end vertical structure organic electrochemical biomimetic synapse device and a preparation method and a biomimetic neural morphological chip thereof. The device comprises a bottom electrode, a first organic mixed ion-electron conductor layer, a first ion gel layer and a top electrode which are sequentially stacked. The first ion gel layer is configured to provide anions. The first organic mixed ion-electron conductor layer is configured to transport anions and electrons. The top electrode is configured to apply a bias voltage to drive the migration of anions. In terms of structure, the four-layer stacked structure realizes ion path innovation, and the vertical channel sharply reduces the delay time to the microsecond level. In terms of device mechanism, the low reduction potential of the organic ion-electron mixed conductor and the depletion of the de-doped carriers are utilized, the current spontaneously reverses under the action of a certain voltage, and the simulation of artificial synapse sensitization and habituation is realized at the single device level.

The application relates to the field of proton ceramic fuel cells, and provides a high-performance proton ceramic fuel cell heterogeneous structure cathode material and a preparation method thereof. 2‑ x Zr x O 5+δ , wherein Ln=La, Pr, Sm, Gd or Eu, 0.04<=x<=0.5, and delta is the non-stoichiometry of oxygen. The cathode material provided by the application comprises: a substrate (Ln 1 / (2‑x) Ba (1‑x) / (2‑x) )2Co2O 5+δ and BaZrO3 nanoparticles precipitated and anchored on the surface of the substrate. The material LnBaCo2O 5+δ is doped with element Zr at the B site, so that the BaZrO3 nanoparticles are in-situ desolvated and anchored on the surface of the substrate in a high-temperature oxidizing atmosphere, forming an ion-electron mixed conductor and a proton conductor heterogeneous structure, which makes the nano-composite cathode material have a triple electric conduction (oxygen ion-proton-electron) reaction region, also has good oxygen reduction catalytic activity, excellent chemical and structural stability, and is a universal method for preparing excellent proton ceramic fuel cell cathode materials.

The invention provides a positive electrode composite material. The positive electrode composite material comprises a positive electrode base material, a first coating layer and a second coating layer, wherein the first coating layer and the second coating layer cover the surface of the positive electrode base material and are sequentially arranged outwards; the raw materials of the first coating layer comprise an alkene polymer with hydroxyl and / or carboxyl functionalized side groups on a main chain, a transition metal chalcogenide accounting for 0.5%-3.5% of the mass of the alkene polymer and an oxide of cobalt; the mass ratio of the transition metal chalcogenide to the cobalt oxide is 1: (0.5-3.5). The second coating layer is prepared from the following raw materials: a nitrile compound containing alkenyl and lithium salt of which the mass is 20 to 65 percent of that of the alkenyl polymer. The inner layer provides a flexible adhesion substrate, a fast ion channel and an anion anchoring point; and an ion-electron mixed conductor is formed on the outer layer. The interface side reaction is effectively inhibited, the ion / electron conductivity, the mechanical strength and the thermal stability are improved, and the comprehensive performance of high capacity, long circulation, high magnification and high safety is finally realized.

The application discloses a kind of nanometer coating modified ceramic membranes for oxygen-enriched combustion and a preparation method thereof, and belongs to the technical field of ceramic oxygen-permeable membrane.The ceramic membrane grows in situ a zinc-tin composite oxide nanostructure layer with specific stoichiometric ratio and micro-morphology on the surface of mixed conductor ceramic oxygen-permeable membrane matrix, significantly improving the oxygen permeability and high temperature stability.The three-dimensional "nanoflower" porous covering layer structure can effectively increase the oxygen permeation active sites, promote the surface exchange and bulk diffusion of oxygen ions.The perovskite oxide selected as the matrix has excellent oxygen ion and electron mixed conduction characteristics, providing a basis for high oxygen permeation flux.The preparation method precisely controls the steps of matrix membrane preparation, pretreatment, precursor preparation, in-situ hydrothermal growth and programmed temperature calcination, and cooperatively improves the high temperature oxygen permeation flux, CO2 corrosion resistance and long-term stability of the membrane, solving the problem that flux and stability are difficult to balance in the prior art.

The present application relates to a kind of mixed conductor layer coated silicon monoxide negative electrode material, the material includes prelithiated SiO x Material, the surface of the prelithiated SiO x Material has coating layer, and the coating layer structure is the amorphous carbon layer of internal uniform dispersion lithium ion conduction active site.The preparation method of the material includes the following steps: preparation precursor coated SiO x Material: in precursor solution SiO x / C particle is added, using coating process, obtains precursor coated SiO x Material;Configuration chemical prelithiation agent solution;Lithiation reduction: the precursor coated SiO x Material is soaked in prelithiation agent solution, stirring for a period of time under inert atmosphere, then washing and drying, obtain lithiated SiO x Material;Heat treatment: the lithiated SiO x Material is calcined, and then heat preservation, obtains mixed conductor layer coated prelithiated SiO x Material.

The invention relates to a power cable (20) comprising:-a hybrid conductor (21) comprising:-a central litz wire portion (22) comprising a plurality of electrically conductive strands (23) electrically insulated from each other; -an annular portion (25) comprising a plurality of electrically conductive strands (26) that are not electrically insulated from one another, the calculated thickness of the annular portion (25) being less than or equal to the skin thickness (delta); and-an insulator (27) arranged around the hybrid conductor (21).

This invention discloses a low-power biomimetic rhizosphere electro-growth promoting matrix based on ion bridging, its construction method, and its application. The biomimetic rhizosphere electro-growth promoting matrix provided by this invention comprises the following components: a three-dimensional porous bioscaffold, which is a biomimetic rhizosphere porous structure formed by cross-linking carboxymethylated cellulose nanoparticles through ion bridging; and ion-electron hybrid conductor units distributed on the surface and interior of the three-dimensional porous bioscaffold, composed of an electronic conductor material providing electronic conduction and an ion polymer providing ion conduction and a gel skeleton. This invention achieves efficient and biocompatible energy and signal transmission between plants and external circuits by constructing an ion bridging conduction mechanism, thereby achieving the goal of efficient growth promotion under low power.

The invention discloses an ion-electron mixed conductor coated silicon-carbon composite material for a solid-state battery, and relates to the technical field of lithium battery material preparation. The silicon-carbon composite material is prepared from the following materials in parts: 10 to 500 parts of silicon, 10 to 600 parts of carbon, 1 to 450 parts of a carbon-based material, 10 to 300 parts of a conductive polymer, 100 to 300 parts of metal magnesium powder, 100 to 400 parts of nano zinc powder, 1 to 120 parts of lithium silicate and 1 to 200 parts of an organic lithium compound. Through cooperation of the metal magnesium powder and the conductive polymer, the volume expansion rate is controlled to be 50% or below, and it is guaranteed that the electrode structure is stable; carbon, a carbon-based material and nano zinc powder construct an electron conduction network, lithium silicate and an organic lithium compound form an ion conduction channel, the problem of multi-component compatibility is solved through reasonable matching and process, high-activity lithium is replaced with low-activity metal, the preparation safety is improved, raw materials are industrial conventional materials, the process is mature, performance and cost are considered, and industrialization requirements are met.

An ion-electron mixed conductor ceramic comprises Ag-modified LLZTO ceramic; a preparation method of the ion-electron mixed conductor ceramic includes the following steps: adding LLZTO ceramic into a solution containing a soluble silver salt and a reducing agent to obtain silver oxide, and reacting the silver oxide under the action of the reducing agent to prepare the Ag-modified LLZTO ceramic; a composite solid electrolyte comprises the aforementioned ion-electron mixed conductor ceramic, a lithium salt and a polymer; a battery electrode material comprises the aforementioned ion-electron mixed conductor ceramic; a battery comprises the aforementioned ion-electron mixed conductor ceramic or the aforementioned solid electrolyte; when the modified ceramic is applied in electrode materials, it can simultaneously play a role in transporting electrons and ions, improve electrode kinetics, and has good application prospects in the battery field.

The invention relates to the technical field of oxygen permeation membrane materials, in particular to a P-element-doped K2NiF4 type mixed conductor ceramic oxygen permeation membrane material and a preparation method and application thereof, and the chemical general formula is Pr2Ni < 0.95-x > Mo < 0.05 > PxO < 4 + delta > (x is greater than or equal to 0 and less than or equal to 0.5). Nonmetal P < 5 + > ions are partially doped into B-site crystal lattices, and high charges and strong P-O bond energy of the B-site crystal lattices are utilized, so that the crystal lattice stability is effectively enhanced, and phase change and decomposition in a high-temperature reducing atmosphere are inhibited. And meanwhile, extra oxygen vacancies are introduced by non-equivalent substitution of P < 5 + > to Ni < 2 + > through a charge compensation mechanism, so that the oxygen ion conductivity and the oxygen permeation flux are remarkably improved. The material shows excellent tolerance in a CO2 environment, the oxygen permeation performance is remarkably superior to that of an undoped material, and the material is particularly suitable for membrane reactor processes such as synthesis gas preparation through methane partial oxidation, propane oxidative dehydrogenation and the like and high-temperature oxygen separation and purification, and has a wide industrial application prospect.

The invention discloses a nano-coated modified ceramic membrane for oxygen-enriched combustion and a preparation method of the nano-coated modified ceramic membrane, and belongs to the technical field of ceramic oxygen permeation membranes. According to the ceramic membrane, the zinc-tin composite oxide nano-structure layer with a specific stoichiometric ratio and microstructure grows on the surface of the mixed conductor ceramic oxygen permeation membrane substrate in situ, so that the oxygen permeation performance and the high-temperature stability are remarkably improved. Wherein the three-dimensional nanoflower-shaped porous covering layer structure can effectively increase oxygen permeation active sites and promote surface exchange and bulk phase diffusion of oxygen ions. The perovskite type oxide selected by the substrate has excellent oxygen ion and electron mixed conduction characteristics, and provides a basis for high oxygen permeation flux. According to the preparation method, the high-temperature oxygen permeation flux, CO2 corrosion resistance and long-term stability of the membrane are synergistically improved through precise control of the steps of matrix membrane preparation, pretreatment, precursor solution preparation, in-situ hydrothermal growth, temperature programming roasting and the like, and the problem that the flux and the stability are difficult to consider at the same time in the prior art is solved.

The application relates to MoS 2‑ The application relates to a transition metal monatomic material-sulfur positive electrode and a preparation method and application thereof, which comprises MoS2-transition metal monatomic material and elemental sulfur, the d-p hybridization between the MoS2 carrier and the transition metal monatomic material is used to control the electronic structure and the two-dimensional structure advantage, the adsorption and conversion capacity of polysulfide is enhanced, ion migration is promoted, and the ion and electronic conductivity are combined. The ion-electron mixed conductor replaces the traditional solid-state electrolyte, a stable sulfur-mixed conductor two-phase interface is constructed, the contact rate of sulfur and the conductive network is improved, the active area of sulfur is expanded, more sulfur is excited to participate in the redox reaction, and therefore the charge-discharge specific capacity and the cycle life of the full-solid-state lithium-sulfur battery are improved.

The invention discloses a programmable amplitude light event sensing device based on ion-electron coupling and a preparation method, and belongs to the technical field of machine vision systems. The preparation method disclosed by the invention comprises the following steps: dissolving an organic ion-electron mixed conductor material and a non-organic ion-electron mixed conductor material in a solvent to obtain an active layer solution; spin-coating the active layer solution on the surface of a working electrode to obtain a working electrode with an active layer; the working electrode with the active layer and the counter electrode are placed in the electrolyte, a loop is formed between the working electrode and the counter electrode, short circuit connection is formed, and the programmable amplitude light event sensing device based on ion-electron coupling is obtained. The method solves the technical problems that an existing device is difficult to meet machine vision with low power consumption, low delay, high information density and difficulty in dynamically adjusting the amplitude at the same time, and device preparation is complex.

The invention relates to an ion-electron mixed conductor material and a preparation method and application thereof. The material comprises a multivalent oxide ion-electron mixed conductor and a carbon coating layer outside the multivalent oxide ion-electron mixed conductor. The chemical general formula of the multivalent oxide is AxGyJzDuEhO6X, wherein 0 < x < = 3, 0 < y < 5 / 3, 0 < = z < = 2, 0 < = u < = 2, 0 < = h < = 2, and z + u + h = 2; a is Li < + >, Na < + > and / or K < + >; g is a + 2 and / or + 3 valent cation; j, D and E are positive ions which take + 4, + 5 and + 6 valence as main valence states and have various reduction valence states, and at least one element in J, D and E simultaneously coexists with at least one reduction valence state in the main valence state of J, D and E; x is halogen or OH <->. The material has oxygen vacancies, and an element A is doped in holes of the carbon coating layer. According to the invention, the electronic conductivity is improved while high ionic conductivity is maintained, and the problem of insufficient electronic conductivity of an oxide electrolyte in an electrode material is effectively solved.

The present application relates to a kind of coating diaphragm with lithium dendrite in-situ elimination function and its preparation method, application, coating diaphragm includes base film and active coating coated on at least one surface of base film, active coating includes binder, dispersant, solvent and the nanoscale or submicron material that can be reacted with lithium, nanoscale or submicron material is generated electron ion mixed conductor material or generates ion conductor material, coating diaphragm preparation method includes the following steps: the slurry that nanoscale or submicron material that can be reacted with lithium, binder, dispersant, solvent are uniformly dispersed in;Slurry is coated on at least one surface of base diaphragm in turn is dried, rolled, slitting, is wound and is prepared coating diaphragm.The coating diaphragm of the present application actively eliminates the growth path of metal lithium by chemical method, changes traditional physical barrier into in-situ chemical elimination, to inhibit the risk of lithium dendrite penetration, significantly improve the intrinsic safety and cycle life of lithium metal battery.

The present application relates to the technical field of cable composite material, in particular to a kind of cable composite material for mixed conductor and its production process.It includes inner layer, halogen-free flame-retardant layer and outer layer, the inner layer is low-temperature-resistant modified elastomer, the outer layer is high-temperature-resistant crosslinked polyolefin body, the halogen-free flame-retardant layer includes insulation layer, flame-retardant layer and sheath layer, the insulation layer is nano magnesium hydroxide and zinc borate composite flame retardant, the flame-retardant layer uses ceramicized silicone rubber, and the sheath layer is phosphorus-nitrogen composite flame-retardant system.The high-temperature-resistant crosslinked polyolefin body uses crosslinked polyolefin as matrix, and is prepared by blending nano silicon dioxide and carbon fluoride.Dynamic vulcanization nano composite material is applied to marine cable insulation layer, and corrosion resistance and mechanical properties are realized.

The application provides a preparation method of an oxygen pump electrode and the oxygen pump electrode. The preparation method of the oxygen pump electrode comprises the following steps: brushing a composite electrode slurry on a solid electrolyte substrate, the composite electrode slurry being an ion-electron mixed conductor material; performing first sintering on the solid electrolyte substrate after the brushing of the composite electrode slurry, so as to form a composite electrode layer; brushing a metal slurry on the composite electrode layer, connecting an electrode lead wire with the metal slurry; performing second sintering on the solid electrolyte substrate after the brushing of the metal slurry, so as to form a metal electrode layer, and obtaining the oxygen pump electrode. According to the scheme of the application, the multi-layer electrode structure is realized by twice sintering, the oxygen reduction rate is improved, the penetration rate of oxygen ions is increased, and the efficiency of the oxygen pump at a lower working temperature is improved, thereby providing a basis for the wide application of the oxygen pump oxygen control on the fourth-generation lead-based stack coolant.