1184results about "Non-aqueous electrolyte cells" patented technology

A method of manufacturing a solid electrolyte battery includes a step of thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink. Further, the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte. By this method, it is possible to improve the flow of ions across respective interlayers of a positive electrode active material layer, a solid electrolyte layer and a negative electrode active material layer.

Active metal electrochemical structure, in particular an active metal negative electrode (anode) protected with an ionically conductive protective architecture incorporating a glassy, ceramic or glass-ceramic solid electrolyte material based on lithium hafnium phosphate, and associated electrochemical devices and methods, provides advantages over conventional structures. The protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the architecture, which may include aqueous, air or organic liquid electrolytes and/or electrochemically active materials.

A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. Its non-aqueous liquid electrolyte contains carbonate having unsaturated bond and/or halogen and compounds like LiPF₆ and/or LiBF₄ (first lithium salt) and lithium salt different from said first one, represented by formula below (second lithium salt).

Li_l(α_mX^a_n)

A lithium super-battery cell comprising: (a) A cathode comprising a cathode active material having a surface area to capture or store lithium thereon, wherein the cathode active material is not a functionalized material and does not bear a functional group; (b) An anode comprising an anode current collector; (c) A porous separator disposed between the two electrodes; (d) A lithium-containing electrolyte in physical contact with the two electrodes, wherein the cathode active material has a specific surface area of no less than 100 m²/g being in direct physical contact with the electrolyte to receive lithium ions therefrom or to provide lithium ions thereto; and (e) A lithium source implemented at one or both of the two electrodes prior to a first charge or a first discharge cycle of the cell. This new generation of energy storage device exhibits the best properties of both the lithium ion battery and the supercapacitor.

A process for producing a lithium battery, comprising: (A) Preparing a plurality of conductive porous layers, wet anode layers, and wet cathode layers; (B) Stacking a desired number of porous layers and wet anode layers in an alternating manner to form an anode electrode having a thickness no less than 100 μm; (C) Placing a porous separator layer in contact with the anode electrode; (D) Stacking a desired number of porous layers wet cathode layers in an alternating manner to form a cathode electrode in contact with the porous separator, wherein the cathode electrode has a thickness no less than 100 μm; and (F) Assembling and sealing the anode electrode, separator, and cathode electrode in a housing to produce the lithium battery. The consolidated anode or cathode layer is preferably thicker than 300 more preferably thicker than 400 μm, and further more preferably greater than 500 μm.

The present invention relates generally to electrochemical cells, and more specifically, to additives for electrochemical cells which may enhance the performance of the cell. In some cases, the additive may advantageously interact with at least one component or species of the cell to increase the efficiency and/or lifetime of the cell. The incorporation of certain additives within the electrolyte of the cell may improve the cycling lifetime and/or performance of the cell.

[Problem] An object of the invention is to provide a lithium secondary battery that shows good cycle performance and at the same time prevents a battery thickness increase due to charge-discharge cycles, and a method of manufacturing such a battery.

[Means for Solving the Problem] A lithium secondary battery includes a negative electrode (2) having a negative electrode current collector (11) and a negative electrode active material layer (12) disposed on the negative electrode current collector (11), a positive electrode (1) having a positive electrode active material, a separator (3), and a non-aqueous electrolyte. The negative electrode active material layer includes negative electrode active material particles and a negative electrode binder, and the negative electrode active material particles include silicon particles and/or silicon alloy particles. The silicon particles and the silicon alloy particles have a crystallite size of 100 nm or less.

A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. Respective axes of the cathode and the anode are substantially parallel to an axis of the housing assembly, and the cathode and anode each include a flat portion that face each other.

A rechargeable battery or cell is disclosed in which the electrode active material consists of at least one nonmetallic compound or salt of the electropositive species on which the cell is based, and the electrolyte or electrolyte solvent consists predominantly of a halogen-bearing or chalcogen-bearing covalent compound such as SOCl2 or SO2Cl2. Also disclosed are cell component materials which include electrodes that consist primarily of salts of the cell electropositive species and chemically compatible electrolytes. These latter electrolytes include several newly discovered ambient temperature molten salt systems based on the AlCl3-PCl5 binary and the AlCl3-PCl5-PCl3 ternaries.

Provided are a multi-layered structure electrolyte including a gel polymer electrolyte on opposite surfaces of a ceramic solid electrolyte, for a lithium ion secondary battery including positive and negative electrodes capable of intercalating/deintercalating lithium ions, and a lithium ion secondary battery including the electrode. The electrolyte includes a gel polymer electrolyte on opposite surfaces of a ceramic solid electrolyte.

The invention discloses a battery pack with thermal conducting adhesives. The battery pack comprises a shell and a plurality of battery units, wherein the shell is provided with a cooling device, the battery units are arranged in the shell, the thermal conducting adhesives with an electric insulation characteristic and a thermal conducting characteristic are arranged outside the battery units and are in contact with the outer surfaces of the battery units.

A bipolar battery comprises a bipolar electrode in which a positive electrode is provided on one surface of a collector and a negative electrode is provided on the other surface of the collector, a gel electrolyte sandwiched between the positive electrode and the negative electrode, and a sealing layer which is provided between the collectors and surrounds a periphery of a single cell including the positive electrode, the negative electrode, and the gel electrolyte.

A non-aqueous electrolyte secondary battery has a pressure-sensitive elastic element reliably operating at a desired operating pressure. The battery includes an outer can having an opening; an electrode assembly which is housed in the outer can and comprises a positive electrode having a positive electrode current collector and a negative electrode having a negative electrode current collector; a sealing plate sealing the opening; an external electrode terminal whose one end is engaged with the throughhole of the sealing plate and whose other end projects outside the sealing plate; and a pressure-sensitive elastic element which is disposed inside the sealing plate in the battery and deforms in accordance with an increase in the gas pressure in the battery, the external electrode terminal. The external electrode terminal includes therein a hole connecting the outside of the battery and the space in contact with the outer side of pressure-sensitive elastic element.

A nonaqueous electrolyte battery includes a case, an electrode group, positive electrode tabs and negative electrode tabs. The electrode group comprises a positive electrode, a negative electrode and a separator. The positive electrode, the negative electrode and the separator are spirally coiled in a flat form. The positive electrode tabs are electrically connected to at least two positions among tab positions P_n of the positive electrode and projected from one end surface of the electrode group. The negative electrode tabs are electrically connected to at least two positions among tab positions N_n of the negative electrode and projected from the one end surface.

A nonaqueous electrolyte battery includes a negative electrode and a positive electrode. The negative electrode includes a negative electrode current collector and a negative electrode active material having a lithium ion absorption potential of 0.4 V (vs. Li/Li+) or more. The negative electrode current collector is made of aluminum or an aluminum alloy. The positive electrode includes a positive electrode current collector and a positive electrode active material. The positive electrode current collector has a total area and specific capacitance larger than those of the negative electrode current collector, and is made of aluminum or an aluminum alloy.

A battery electrode, includes: a collector; and an active material layer formed on a surface of the collector and including: an active material, and a conductive additive having a bulk density which is gradually decreased in a direction from a collector side of the active material layer to a surface side of the active material layer.

A surface-mediated cell (SMC) comprising: (a) a cathode comprising a carbon-based cathode active material having a surface area to capture or store lithium thereon; (b) an anode comprising an anode current collector alone, or combined anode current collector and anode active material; (c) a porous separator disposed between the anode and the cathode; (d) a lithium-containing electrolyte, wherein the anode and/or cathode active material has a specific surface area no less than 100 m²/g in direct physical contact with the electrolyte to receive lithium ions therefrom or to provide lithium ions thereto; and (e) a lithium source disposed in at least one of the two electrodes when the cell is made, and the cell has an open-circuit voltage (OCV) of at least 0.8 volts; wherein the cell operates between a lower voltage limit lower than the OCV and an upper limit of between 3.8 and 4.5 volts.

The invention discloses a metal phthalocyanine/carbon nanometer pipe compound catalyst, a method for preparing the same and a lithium/thionyl chloride battery using the same, wherein the metal phthalocyanine/carbon nanometer pipe compound catalyst is prepared by evenly and closely loading metal phthalocyanine compounds on a carbon nanometer pipe; and the metal phthalocyanine/carbon nanometer pipe compound catalyst is mixed with carbon black and a binding agent, and the mixture subjected to forming and drying to prepare an anode carbon plate of the lithium/thionyl chloride battery using the catalyst. The metal phthalocyanine compounds are evenly and closely loaded on the carbon nanometer pipe. On one hand, the electrically discharged product of a LiCl film can be loosened by the catalysis of the metal phthalocyanine compounds; on the other hand, a network structure is built up in the carbon anode of the carbon nanometer pipe, which facilitates the electric communication of electrolytes and the improvement of electric conductivity of the electrodes. Due to the synergetic effect of the metal phthalocyanine compounds and the carbon nanometer pipe, the operating voltage of the lithium/thionyl chloride battery is improved. The method has advantages of simple process, simple operation, the suitability for industrialized production and obvious practical values and economic benefits.

A vinylidene fluoride polymer binder solution for forming an electrode for a non-aqueous-type battery is formed by adding an acid, preferably an organic acid, as a stabilizer to a solution of a vinylidene fluoride polymer in an organic solvent. The acid is preferably added in an amount sufficient to ensure a pH of at most 9 when measured with respect to a 10-times dilution of the binder solution with deionized water. The acid addition is effective for preventing a problematic viscosity increase in the binder solution and also gelling of an electrode-forming composition formed by adding a powdery electrode material in the binder solution.

A main object of the present invention is to provide an air battery system which can restrain the internal resistance caused by the shortage of liquid electrolyte from increasing and which can carry out a high-rate discharge. The present invention resolves the above-mentioned object by providing an air battery system comprising: an air battery cell which contains an air cathode, an anode, and a separator; and an oxygen gas supply means for supplying an oxygen gas by bubbling to a liquid electrolyte, characterized in that the air cathode further contains an air cathode layer containing a conductive material, and an air cathode current collector for collecting current of the air cathode layer; the anode further contains an anode layer containing an anode active material which stores and releases a metal ion, and an anode current collector for collecting current of the anode layer; and the separator is provided between the air cathode layer and the anode layer, and characterized in that the air cathode layer and the anode layer are constantly filled with the liquid electrolyte at a time of a change in a volume of the electrode caused by a discharge or a discharge and charge.

The invention provides fluorinated multi-layered carbon nanomaterials and methods for their production. In one aspect of the invention, the carbon nanomaterials are partially fluorinated and retain some unreacted carbon. The invention also provides electrodes and electrochemical devices incorporating the fluorinated carbon nanomaterials of the invention. In one aspect of the invention, the electrochemical has a first electrode including the at least partially fluorinated carbon materials of the invention and a second electrode including a source of lithium ions