519results about "Composite electrolytes" patented technology

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.

A ceramic-ceramic nanocomposite electrolyte having enhanced conductivity is provided. The nancomposite electrolyte is formed from chemically stabilized zirconia such as yttria stabilized zirconia or scandia stabilized zirconia and a heterogeneous ceramic dopant material such as Al₂O₃, TiO₂, MgO, BN, or Si₃N₄ The nanocomposite electrolyte is formed by doping the chemically stabilized zirconia with the ceramic dopant material and pressing and sintering the composite. The resulting electrolyte has a bulk conductivity of from about 0.10 to about 0.50 S/cm at about 600° C. to about 900° C. and may be incorporated into a solid oxide fuel cell.

The invention relates to high-ionic conductivity electrolyte compositions. The invention particularly relates to high-ionic conductivity electrolyte compositions of semi-interpenetrating polymer networks and their nanocomposites as quasi-solid/solid electrolyte matrix for energy generation, storage and delivery devices, in particular for hybrid solar cells, rechargeable batteries, capacitors, electrochemical systems and flexible devices. The binary or ternary component semi-interpenetrating polymer network electrolyte composition comprises: a) a polymer network with polyether backbone (component I); b) a low molecular weight linear, branched, hyper-branched polymer or any binary combination of such polymers with preferably non-reactive end groups (component-ll and/or component-Ill, for formation of ternary semi-IPN system); c) an electrolyte salt and/or a redox pair, and optionally d) a bare or surface modified nanostructured material to form a nanocomposite.

The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material. Thus, it is possible to synthesize the lithium lanthanum titanate composite solid electrolyte material containing silicon by performing sintering when the ratio of mass of the Si or mass of the Si calculated based on mass of the Si compound to mass of the lithium lanthanum titanate is 0.27% to 1.35%. Grain boundary conductivity thereof is significantly improved, and therefore, total conductivity is improved. In addition, processes of the experimental method are simple and easily performed. Also, an experimental period is greatly reduced, a synthesis temperature is reduced, and energy consumption and production cost are reduced.

Fiber-reinforced separators/solid electrolytes suitable for use in a cell employing an anode comprising an alkali metal are disclosed. Such fiber-reinforced separators/solid electrolytes may be at least partially amorphous and prepared by compacting, at elevated temperatures, powders of an ion-conducting composition appropriate to the anode alkali metal. The separators/solid electrolytes may employ discrete high aspect ratio fibers and fiber mats or plate-like mineral particles to reinforce the separator solid electrolyte. The reinforcing fibers may be inorganic, such as silica-based glass, or organic, such as a thermoplastic. In the case of thermoplastic fiber-reinforced separators/solid electrolytes, any of a wide range of thermoplastic compositions may be selected provided the glass transition temperature of the polymer reinforcement composition is selected to be higher than the glass transition temperature of the amorphous portion of the separator/solid electrolyte.

Provided are solid-state hybrid electrolytes. The hybrid electrolytes have a polymeric material layer, which may be a polymer/copolymer layer or a gel polymer/copolymer layer, disposed on at least a portion of an exterior surface or all of the exterior surfaces of a solid-state electrolyte. A hybrid electrolyte can form an interface with an electrode of an ion-conducting battery that exhibits desirable properties. The solid-state electrolyte can comprise a monolithic SSE body, a mesoporous SSE body, or an inorganic SSE having fibers or strands, which may be aligned. In the case of solid-state electrolytes that have strands, the strands can be formed using a sacrificial template. The hybrid solid-state electrolytes can be used in ion-conducting batteries, which may be flexible, ion-conducting batteries.

The invention belongs to the technical field of batteries, and particularly relates to a composite solid-state electrolyte which comprises an organic polymer, a lithium salt, an ionic liquid and an inorganic solid electrolyte material, wherein the mass ratio of the polymer to the lithium salt to the ionic liquid to the inorganic solid electrolyte material is 1: (0.1-0.6): (0.1-1): (0.05-0.2). Thecomposite solid-state electrolyte disclosed by the invention is high in ionic conductivity, high in stability, good in compatibility with positive and negative electrodes and excellent in mechanical property, and the composite solid-state electrolyte has excellent mechanical property due to a polymer framework; the lithium salt provides lithium ions for the solid electrolyte; the ionic liquid improves the conductivity of the electrolyte; the inorganic solid electrolyte material can be crosslinked with the polymer to further improve the mechanical properties of the solid electrolyte and increase the strength.

The present disclosure relates to a polymer electrolyte membrane having a construction wherein an ionomer is charged in pores of a nanoweb having a high melting point, being insoluble in an organic solvent and having excellent pore characteristics, under optimum conditions. Therefore, an overall thickness of the electrolyte membrane may be reduced, thereby attaining advantages such as decrease in ohmic loss, reduction of material costs, excellent heat resistance, low thickness expansion rate which in turn prevents proton conductivity from being deteriorated over a long term. The polymer electrolyte membrane of the present invention comprises a porous nanoweb having a melting point of 300□ or more and being insoluble in an organic solvent of NMP, DMF, DMA, or DMSO at room temperature; and an ionomer which is charged in pores of the porous nanoweb and contains a hydrocarbon material soluble in the organic solvent at room temperature.

An electrolyte membrane (11) includes: a filler (20); and a polymer electrolyte (22). A thickness of the electrolyte membrane (11) is 1 micrometer to 500 micrometer, a moisture content thereof is 10 mass % or more, and a ratio of a swelling ratio in a membrane surface direction (xy) thereof and a swelling ratio in a membrane thickness direction (z) thereof satisfies following Expression 1: where Lambda z is the swelling ratio in the membrane thickness direction (z), and Lambda xy is the swelling ratio in the membrane surface direction (xy).

The invention discloses a composite solid electrolyte material and a preparation method and application thereof. The composite solid electrolyte material is composed of a conducting ion polymer, a metal-organic framework material and an alkali metal or alkaline earth metal salt. The metal-organic framework material includes MOF-235, MIL-68, MIL-88. MIL-96 and other series. The metal-organic framework material has a special topological structure. The addition of the solid electrolyte material can effectively reduce the crystallinity of the polymer electrolyte, promote the dissociation of the alkali metal or alkaline earth metal salt, the obtained composite solid electrolyte has good ionic conductivity and electrochemical stability in a wide temperature range (25-120 DEG C) and also has goodflexibility and film thinning, and the preparation method is simple and scale production is feasible. The composite solid electrolyte can be matched with different types of positive electrode materials and alkali metal or alkaline earth metal negative electrode, and the assembled all-solid-state battery can present good electrochemical performance at the above-mentioned temperature.

The disclosure relates to a hybrid aqueous rechargeable battery, wherein the battery comprises a positive electrode and a negative electrode, and wherein the positive electrode and the negative electrode are in aqueous electrolytes with different pHs respectively. The hybrid aqueous rechargeable battery has a working voltage at least 0.6 V higher than the conventional aqueous lithium batteries and a theoretical energy density at least 60 Wh/kg higher. The hybrid aqueous rechargeable battery can be used for storage and discharge of electricity, etc.

Disclosed is a composite electrolyte membrane comprising a microporous polymer substrate and a sulfonated polymer electrolyte. The composite electrolyte membrane comprises: a first polymer electrolyte layer formed of a first non-fluorinated or partially-fluorinated sulfonated polymer electrolyte; a non-fluorinated or partially-fluorinated microporous polymer substrate stacked on the first polymer electrolyte layer, wherein pores of the microporous polymer substrate are impregnated with a second non-fluorinated or partially-fluorinated sulfonated polymer electrolyte, and the first polymer electrolyte and the second polymer electrolyte are entangled with each other on an interface thereof; and a third polymer electrolyte layer formed on the microporous polymer substrate impregnated with the second polymer electrolyte by a third non-fluorinated or partially-fluorinated sulfonated polymer electrolyte, wherein the second polymer electrolyte and the third polymer electrolyte are entangled with each other on an interface thereof. A method for manufacturing the composite electrolyte membrane, and a membrane-electrode assembly (MEA) and a fuel cell comprising the composite electrolyte membrane are also disclosed.

A composite material, for example a composite membrane for a polymer electrolyte membrane fuel cell includes a first conductive polymer and a support material for the polymer, wherein the support material comprises a second conductive polymer. A method making of the composite material is also disclosed as is its use as a polymer electrolyte membrane in a fuel cell.

The invention relates to a polymerized organic-inorganic composite solid electrolyte and an in-situ assembled all-solid-state battery, and belongs to the technical field of ion battery preparation. The preparation method of the polymerized solid electrolyte comprises the following steps: fully and uniformly mixing a polymer monomer and a cross-linking agent, and adding an electrolyte salt and an initiator to obtain an electrolyte precursor; and initiating the electrolyte precursor to obtain the polymerized solid electrolyte. The in-situ assembled all-solid-state battery can be obtained by dropping the electrolyte precursor onto a positive electrode, covering the electrolyte precursor with a negative electrode, carrying out initiating and curing the electrolyte precursor. The room-temperature conductivity of the solid electrolyte reaches 1.6*10<-4>Scm<-1>, and the electrochemical window is greater than 6V. For the all-solid-state battery based on the solid electrolyte, the discharge capacity density is 145mAh/g at the charge-discharge rate of 0.5C, the discharge capacity is 176mAh/g at the charge-discharge rate of 0.1C, and the capacity retention ratio after 100 cycles at the charge-discharge rate of 0.5C is 88%.

The present invention relates to a polymer electrolyte that provides high proton conductivity and low fuel crossover at the same time, as well as a member using the same. The embodiments of the invention can achieve high output and high energy density in the form of a polymer electrolyte fuel cell. A polymer electrolyte comprising a proton conductive polymer (A) and a polymer (B) which is different from (A) wherein a ratio of the amount of unfreezable water, represented by formula (S1), in said polymer electrolyte is no less than 40 wt % and no greater than 100 wt % is disclosed. The ratio of amount of unfreezable water (S1)=(amount of unfreezable water)/(amount of low melting point water+amount of unfreezable water)×100 (%).

The invention relates to a composite electrolyte and an electrochemical device using the composite electrolyte and an electronic device, and particularly provides a composite electrolyte comprising aninorganic solid electrolyte; an organic solid electrolyte; an organic additive; and a lithium salt, wherein the organic additive has a boiling point within the range of 150-350 DEG C, and the contentof the lithium salt is within the range of about 12wt%-50wt% based on the total weight of the composite electrolyte. The composite electrolyte has good conductivity. The lithium ion battery preparedby the composite electrolyte can realize operation at room temperature and low temperature and has low battery impedance and high battery capacity.

The invention discloses an aqueous zinc ion battery electrolyte and application thereof. The aqueous zinc ion battery electrolyte disclosed by the invention contains solvent water, high-concentrationelectrolyte salt and zinc salt;the zinc salt is a water-soluble salt; the high-concentration electrolyte salt is potassium bis(fluorosulfonyl) imide and/or potassium trifluoromethanesulfonate, and themass molar concentration is not less than 10mol/kg. According to the electrolyte, due to the fact that high-concentration potassium bis(fluorosulfonyl) imide and/or potassium trifluoromethanesulfonate are/is added, a large number of water molecules in the electrolyte can be consumed due to the strong solvation effect, the hydration effect of zinc ions is reduced, and zinc dendrites formed by thezinc ions in dissolution and deposition are inhibited; in addition, the strong solvation effect of the high-concentration electrolyte salt and solvent water molecules can reduce the electrochemical activity of the water molecules, improve the electrochemical window of the electrolyte, reduce the hydrogen evolution reaction, reduce the dissolution effect of zinc, inhibit the decomposition of the water molecules on the surface of the electrode, reduce the corrosion dissolution of the zinc negative electrode and prolong the cycle life of the aqueous zinc ion battery.