35results about How to "Low self-discharge" patented technology

A portable lancing aid for providing liquid samples comprises a lancet system having at least one lancet, a tensioning device, and an electromechanical actuator. The tensioning device can be tensioned by the electromechanical actuator. The portable lancing aid may further include an energy source for storing electrical energy that is connected to the electromechanical actuator. Additionally, the portable lancing aid may include an interface for charging the energy source where the interface is externally accessible from the lancet system. The invention is ergonomical and easy to handle for children and patients with physical limitations. Furthermore, a lancing system for collecting liquid samples is provided with a portable lancing aid that is detachably mountable to a charging station for charging the portable lancing aid.

An electrochemical cell with an alkali metal containing anode having high discharge capacity, charge efficiency and low self-discharge. The addition of at least one nitramide or dinitramide salt of a metal cation to the electrochemical cell electrolyte unexpectedly lowers first cycle irreversible capacity, adds higher cycle life, lowers self-discharge and beneficially addresses several additional degrees of freedom with respect to electrolyte solvent selection while providing higher charge capacity. Additives include the lithium metal salts of nitramide or dinitramide, and the electrolyte consists essentially of a lithium metal salt dissolved in a at least one of an aqueous solvent, molten salt solvent system and a non-aqueous solvent mixture of at least one of organic ethers, esters, carbonates, acetals.

An electric window dimming device for reducing the light transmission of a window for an aircraft. The electric window dimming device comprises a capacitance. The electric window dimming device is adapted for being connected to the capacitance and to a primary energy source that provides energy. If the primary energy source fails, the capacitance supplies energy for electric window dimming device.

Process for fabrication of all-solid-state thin film batteries, said batteries comprising a film of anode materials (anode film), a film of solid electrolyte materials (electrolyte film) and a film of cathode materials (cathode film) in electrical contact with a cathode collector, characterized in that:

• • a first electrode film (cathode or anode) is deposited by electrophoresis on a conducting substrate or a substrate with at least one conducting zone, said substrate or said at least one conducting zone possibly being used as a collector of said electrode current (anode or cathode current) of the micro-battery,
  • the electrolyte film is deposited by electrophoresis on said first electrode film,
  • a second electrode film (anode or cathode) is deposited on the electrolyte film either by electrophoresis or by a vacuum deposition process.

The present invention provides a sulfur-carbon composite material, said composite material comprising a porous carbon substrate containing both micropores and mesopores and sulfur, wherein the sulfur is only contained in the micropores of the carbon substrate. Moreover, a lithium-sulfur battery with its cathode comprising said sulfur-carbon composite material and the method for preparing such material is also provided.

The Ce—H₂ redox flow cell is optimized using commercially-available cell materials. Cell performance is found to be sensitive to the upper charge cutoff voltage, membrane boiling pretreatment, methanesulfonic-acid concentration, (+) electrode surface area and flow pattern, and operating temperature. Performance is relatively insensitive to membrane thickness, Cerium concentration, and all features of the (−) electrode including hydrogen flow. Cell performance appears to be limited by mass transport and kinetics in the cerium (+) electrode. Maximum discharge power of 895 mW cm⁻² was observed at 60° C.; an energy efficiency of 90% was achieved at 50° C. The Ce—H₂ cell is promising for energy storage assuming one can optimize Ce reaction kinetics and electrolyte.

An electric double layer capacitor capable of functioning over a broad temperature range with a reduced incidence of electrolyte leakage and a low rate of self discharge is formed from a solid electrolyte containing (A) a crosslinking product of a polyoxyalkylene having a double bond terminally and/or in its side chain, (B) an electrolyte salt, (C) a low molecular weight polar solvent, and (D) polyacrylonitrile. The above-mentioned polyoxyalkylene (A) is, for example, a compound of the formula (1) below. In formula (1), Z is an active hydrogen compound residue; k is an integer from 1 to 6; R1 is an alkyl group having 1 to 8 carbon atoms; Y1 is an acryloyl or methacryloyl group; m is an integer from 0 to 460 and n is an integer from 0 to 350, excluding the case in which both m and n are simultaneously equal to 0.

A method of modifying a carbonate layer formed on a surface of an electrochemical cell component is provided. The surface includes a ceramic oxide. The carbonate layer includes a carbonate and is substantially non-conductive to lithium ions and sodium ions. The method includes contacting the carbonate layer with a modifying agent to form a mixture and causing the modifying agent to incorporate into the carbonate layer and form a modified hybrid layer including a eutectic mixture of the modifying agent and the carbonate. The modified hybrid layer is conductive to lithium ions and sodium ions.

The invention proposes a composition comprising:

• • a) a hydrogen-fixing alloy of formula R_1-tMg_tNi_s-zM_z in which: R represents one or more elements chosen from the group comprising La, Ce, Nd and Pr; M represents one or more elements chosen from the group comprising Mn, Fe, Al, Co, Cu, Zr and Sn;
  • 0.1≦t≦0.4;
  • 3.0≦s≦4.3;
  • z≦0.5;
  • b) a manganese compound in a proportion such that the mass of manganese represents from 1 to 5.5% of the mass of the alloy,
  • c) an yttrium compound in a proportion such that the mass of yttrium represents from 0.1% to 2% of the mass of the alloy. The invention also relates to an anode comprising the composition according to the invention. The invention also relates to an alkaline electrolyte battery comprising said at least one anode.

The present disclosure relates to solid-state electrolytes and methods of making the same. The method includes admixing a sulfate precursor including one or more of Li₂SO₄ and Li₂SO₄.H₂O with one or more carbonaceous capacitor materials. The first admixture is calcined to form an electrolyte precursor that is admixed with one or more additional components to form the solid-state electrolyte. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is about 1:2, the electrolyte precursor consists essentially of Li₂S. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is less than about 1:2, the electrolyte precursor is a composite precursor including a solid-state capacitor cluster including the one or more carbonaceous capacitor materials and a sulfide coating including Li₂S disposed on one or more exposed surfaces of the solid-state capacitor cluster.

An electrochemical cell that cycles lithium ions is provided. The electrochemical cell includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a lithium phosphate (Li₃PO₄)-coated lithium lanthanum zirconium oxide (LLZO) material. The Li₃PO₄-coated LLZO material is a particle having a substantially spherical core comprising the LLZO and a layer comprising the Li₃PO₄ directly coating at least a portion of the substantially spherical core, the substantially spherical core having a diameter of less than or equal to about 100 μm; a nanowire having an elongate core comprising the LLZO and a layer comprising the Li₃PO₄ directly coating at least a portion of the elongate core, the elongate core having a length of less than or equal to about 10 mm and a diameter of less than or equal to about 100 μm; or a combination thereof.

The invention relates to a solid-state chemical current source and to a method for increasing a discharge power thereof. The inventive current source can be used in electrochemical engineering, in particular for primary and secondary solid-state chemical power sources, which are based on solid ion conductors and exhibit a high discharge power and for a method for increasing the said discharge power. The solid-state chemical current source comprises a body provided with current leading-out wires and solid-state galvanic cells which are arranged therein, are connected to the current leading-out wires, are based on solid ion conductors and perform the function of heating elements. A heat insulation for reducing heat losses of the heated galvanic cells is arranged inside and\or outside the body. The inventive method for increasing the discharge power of the solid-state chemical current source by heating it consists in using the heat produced by the electric current flowing through the galvanic cells and in maintaining the hot state of the said galvanic cells during the discharge. The said invention makes it possible to obtain a solid-state chemical current source exhibiting a high discharge power, a low self-discharge (about 1-3% per year), a long-term power storage and to increase energy characteristics in such a way that they are equal to or greater than 600 Watt-hour/dm3.

The present disclosure provides a solid-state battery including at least one current collector that is in communication with one or more switches configured to move between open and closed positions, where the open position corresponds to a first operational state of the solid-state battery and the closed position corresponds to a second operational state of the solid-state battery; one or more electrodes disposed adjacent to the one or more current collectors; and one or more electrothermal material foils including a resistor material that is in electrical communication with that at least one current collector, where in the first operational state electrons may flow through the one or more electrothermal material foils during cycling of the solid-state battery so as to initiate a heating mode, and in the second operational state electrons may flow through the current collector during cycling of the solid-state battery so as to initiate a non-heating mode.

A method for forming a bipolar solid-state battery includes preparing a mixture of gel precursor solution and solid electrolyte. The gel precursor includes a polymer, a first solvent, and a liquid electrolyte. The liquid electrolyte includes a second solvent, a lithium salt, and electrolyte additive. The method includes loading the mixture onto at least one of a first electrode, a second electrode, and a third electrode. Each of the first, second, and third electrodes includes a plurality of solid-state electroactive particles. The method includes removing at least a portion of the first solvent from the mixture to form a gel and positioning one of the first, second, and third electrodes with respect to another of the first, second, and third electrodes. The method includes applying a polymer blocker to a border of the first, second, or third electrodes.

A safe high rate primary lithium battery with solid cathode and a lithium anode is provided, having a high rate of discharge due to the lithiated cathode materials contained therein.

The present disclosure relates to a solid-state electrochemical cell having a uniformly distributed solid-state electrolyte and methods of fabrication relating thereto. The method may include forming a plurality of apertures within the one or more solid-state electrodes; impregnating the one or more solid-state electrodes with a solid-state electrolyte precursor solution so as to fill the plurality of apertures and any other void or pores within the one or more electrodes with the solid-state electrolyte precursor solution; and heating the one or more electrodes so as to solidify the solid-state electrolyte precursor solution and to form the distributed solid-state electrolyte.

A method for forming a bipolar solid-state battery may include preparing a plurality of freestanding gels each comprising a polymer, a solvent, and a lithium salt and, also, positioning a first freestanding gel between a first electrode and a second electrode and a second freestanding gel between the second electrode and a third electrode. Each of the first electrode, the second electrode, and the third electrode may include a plurality of electroactive particles. The method may also include infiltrating at least a portion of the first free-standing gel into a space between particles of the first electrode and the second electrode and at least a portion of the second free-standing gel into a space between the particles of second electrode and the third electrode.

A cell frame (8) for accommodating a specific number of pouch cells (14), having an integrated cell collector (10), wherein the cell connector (10) provides contact pads for clinching. A battery pack and a method for producing a battery pack are also specified.

The present disclosure provides a solid-state bipolar battery that includes negative and positive electrodes having thicknesses between about 100 μm and about 3000 μm, and a solid-state electrolyte layer disposed between the negative electrode and the positive electrode and having a thickness between about 5 μm and about 100 μm. The first electrode includes a plurality of negative solid-state electroactive particles embedded on or disposed within a first porous material. The second electrode includes plurality of positive solid-state electroactive particles embedded on or disposed within a second porous material that is the same or different from the first porous material. The solid-state bipolar battery includes a first current collector foil disposed on the first porous material, and a second current collector foil disposed on the second porous material. The first and second current collector foils may each have a thickness less than or equal to about 10 μm.

A high-capacity and long-life negative electrode hydrogen storage material of La—Mg—Ni type for secondary rechargeable nickel-metal hydride battery and a method for preparing the same are provided in the present invention. A chemical formula of the negative electrode hydrogen storage material of La—Mg—Ni type is La_1-x-yRe_xMg_y(Ni_1-a-bAl_aM_b)_z, wherein Re is at least one of Ce, Pr, Nd, Sm, Y, and M is at least one of Ti, Cr, Mo, Nb, Ga, V, Si, Zn, Sn; 0≤x≤0.10, 0.3≤y≤0.5, 0<a≤0.05, 0≤b≤0.02, 2.3≤z<3.0. The negative electrode hydrogen storage material of La—Mg—Ni type in the present invention has excellent charge-discharge capacity and cycle life. The negative electrode hydrogen storage material of La—Mg—Ni type can be applied in both common secondary rechargeable nickel-metal hydride battery and secondary rechargeable nickel-metal hydride battery with ultra-low self-discharge and long-term storage performance.

A battery cell with a monitoring device including a data processing unit for processing state data of the battery cell as a function of a trigger pulse and a triggering unit, which is connected to the data processing unit, to generate the trigger pulse and to provide the trigger pulse to the data processing unit. The triggering unit is designed to evaluate a measurement signal, which correlates with an electrical energy of the battery cell in order to generate the trigger pulse as a function of the measurement signal. The invention further relates to a battery having such a battery cell as well as to a motor vehicle having such a battery. Furthermore, the invention relates to a method for monitoring at least one such battery cell.