254results about "Non-aqueous electrolytes" patented technology

The present invention provides electrochemical cells capable of good electronic performance, particularly high specific energies, useful discharge rate capabilities and good cycle life. Electrochemical cells of the present invention are versatile and include primary and secondary cells useful for a range of important applications including use in portable electronic devices. Electrochemical cells of the present invention also exhibit enhanced safety and stability relative to conventional state of the art primary lithium batteries and lithium ion secondary batteries. For example, electrochemical cells of the present invention include secondary electrochemical cells using anion charge carriers capable of accommodation by positive and negative electrodes comprising anion host materials, which entirely eliminate the need for metallic lithium or dissolved lithium ion in these systems.

The present invention provides electrochemical cells capable of good electronic performance, particularly high specific energies, useful discharge rate capabilities and good cycle life. Electrochemical cells of the present invention are versatile and include primary and secondary cells useful for a range of important applications including use in portable electronic devices. Electrochemical cells of the present invention also exhibit enhanced safety and stability relative to conventional state of the art primary lithium batteries and lithium ion secondary batteries. For example, electrochemical cells of the present invention include secondary electrochemical cells using anion charge carriers capable of accommodation by positive and negative electrodes comprising anion host materials, which entirely eliminate the need for metallic lithium or dissolved lithium ion in these systems.

A stack type battery has a stacked electrode assembly (10) in which a plurality of positive electrode plates (1) and a plurality of negative electrode plates (2) are alternately stacked one another across separators. Each one of pairs of the separators adjacent to each other in a stacking direction has a bonded portion (4) in which the separators are bonded to each other in at least a portion of a perimeter portion thereof, so as to form a pouch-type separator (3). The proportion of the bonded portion (4) of one of the pouch-type separators 3 (low blocking rate pouch-type separator (3L)) located in a stacking direction-wise central region of the stacked electrode assembly (10) is made smaller than the proportion of the bonded portion (4) of each of the pouch-type separators 3 (high blocking rate pouch-type separator 3H) located in both stacking direction-wise end portions of the stacked electrode assembly (10).

The invention, belonging to the technical field of electrochemistry, particularly discloses a high energy density charge-discharge lithium battery. The lithium battery comprises a separator, a cathode, an anode and an electrolyte, wherein the separator is solid, lithium ions can reversibly pass through the separator, the cathode is made of lithium metal or lithium alloy, the electrolyte of the cathode side comprises common organic electrolyte, polymer electrolyte, ionic liquid electrolyte or a mixture thereof, the anode is made of common cathode material of a lithium ion battery, and the electrolyte of the anode side comprises an aqueous solution containing lithium salt or a hydrogel electrolyte. Compared with the traditional lithium ion battery, the charge-discharge lithium battery disclosed by the invention has higher voltage, and the energy density of the charge-discharge lithium battery is more than 30% higher. The high energy density charge-discharge lithium battery can be used in the fields of electricity storage and release, etc.

A structure for use in an energy storage device, the structure comprising a backbone system extending generally perpendicularly from a reference plane, and a population of microstructured anodically active material layers supported by the lateral surfaces of the backbones, each of the microstructured anodically active material layers having a void volume fraction of at least 0.1 and a thickness of at least 1 micrometer.

Disclosed are a nonaqueous electrolytic solution of an electrolyte dissolved in a nonaqueous solvent, which contains a carboxylate represented by the following general formula (I) in an amount of from 0.01 to 10% by mass of the nonaqueous electrolytic solution; and an electrochemical element using it.(In the formula, R1 represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, or a cyanoalkyl group; R2 represents a hydrogen atom, an alkoxy group, a formyloxy group, an acyloxy group, an alkoxycarbonyloxy group, an alkanesulfonyloxy group, an arylsulfonyloxy group, an alkylsilyloxy group, a dialkylphosphoryloxy group, an alkoxy(alkyl)phosphoryloxy group, or a dialkoxyphosphoryloxy group; R3 represents a hydrogen atom, —CH2COOR6, or an alkyl group; R4 represents a hydrogen atom or an alkyl group; R5 has the same meaning as R2, or represents a hydrogen atom, an alkyl group, or —CH2COOR7; R6 and R7 each independently represent an alkyl group, an alkenyl group, an alkynyl group, or a cycloalkyl group; X represents —OR8, -A2-C≡Y2, -A2-C(═O)O-A3-C≡Y2, -A2-C(═O)O-A4 or COOR1; R5 is the same as R1; A1 to A3 each independently represent an alkylene group; A4 represents an alkyl group; Y2 represents CH or N; m indicates an integer of from 0 to 4; n indicates 0 or 1.)

An electrolyte with an indicator, such as a dye, for detecting leakage from an electrochemical energy storage device is provided. Also provided is a method of making such an electrolyte with indicator; a device that incorporates such an electrolyte with indicator; a method of manufacturing an electronic or electrical system that incorporates such a device; and a method of detecting the leakage of electrolyte from a battery or capacitor.

A negative electrode material comprising composite particles having silicon nano-particles dispersed in silicon oxide is suited for use in nonaqueous electrolyte secondary batteries. The silicon nano-particles have a size of 1-100 nm. The composite particles contain oxygen and silicon in a molar ratio: 0<O / Si<1.0. Using the negative electrode material, a lithium ion secondary battery can be fabricated which features high 1st cycle charge / discharge efficiency, capacity, and cycle performance. The invention also relates to a method for making the negative electrode material.

Disclosed is a separator for non-aqueous batteries which not only has a shutdown mechanism, but can also achieve a higher output and has short-circuit resistance. The separator is configured of a laminate which is provided with a low melting point polymer-fibre layer (A), formed of a low melting point polymer having a melting point of 100-200 DEG C, and a heat-resistant polymer-fibre layer (B), formed above the low melting point polymer-fibre layer (A) and formed of a heat infusible polymer or a high melting point polymer, having a melting point of over 200 DEG C. The low melting point polymer-fibre layer (A) includes low melting point polymer fibres having a fibre diameter not greater than 1000nm; the heat-resistant polymer-fibre layer (B) is formed from the heat resistant polymers and includes an amalgam of nanofibres and non-nanofibres.

Provided are a nickel-manganese composite hydroxide capable of producing a secondary battery having a high particle fillability and excellent battery characteristics when used as a precursor of a positive electrode active material and a method for producing the same. A nickel-manganese composite hydroxide is represented by General Formula: NixMnyMz(OH)2+α and contains a secondary particle formed of a plurality of flocculated primary particles. The primary particles have an aspect ratio of at least 3, and at least some of the primary particles are disposed radially from a central part of the secondary particle toward an outer circumference thereof. The secondary particle has a ratio I(101) / I(001) of a diffraction peak intensity I(101) of a 101 plane to a peak intensity I(001) of a 001 plane, measured by an X-ray diffraction measurement, of up to 0.15.