Abstract:
A gel-type composition comprising both a polymer obtained by reacting a linear polymer which comprises a compound of the general formula (A) and a compound of the general formula (B1) or (B2) and bears two hydrosilyl groups with a compound of the general formula (D) which bears three or more ethylenic double bonds and a solvent; gel-type ionic conducting compositions containing the gel-type composition as the base; and batteries and electrochemical elements made by using the ionic conducting compositions.
Abstract:
A lithium secondary battery excellent in electric capacitance, cyclic characteristics and retention characteristics, and a non-aqueous electrolyte capable of being advantageously used for the production of such a lithium secondary battery. The non-aqueous electrolyte comprises an electrolyte dissolved in a non-aqueous solvent containing cyclic carbonate, chain carbonate and vinylene carbonate, and has a reduction potential with reference to lithium of less than 1 volt and/or a minimum mixing amount of an organic chlorine compound; and the lithium secondary battery uses in combination this non-aqueous electrolyte and a cathode and an anode consisting of graphite having a crystal face interval (d002) of up to 0.34 nm.
Abstract:
A lithiated manganese dioxide for use in primary lithium electro-chemical cells. The lithiated manganese dioxide is prepared by stepwise treatment with a liquid source of lithium cations that can include an aqueous solution of a lithium base or a low melting point lithium salt resulting in formation of a lithiated manganese dioxide product (Fig. 1). Lithium cations in the lithium base or molten lithium salt can be ion-exchanged with hydrogen ions in the manganese dioxide crystal lattice and additional lithium ions reductively inserted into the lattice during subsequent heat-treatment to form the lithiated manganese dioxide product LiyMnO2- delta . The primary lithium cell utilizing the lithiated manganese dioxide product as active cathode material exhibits increased operating voltage and enhanced high rate, low temperature, and pulse discharge performance compared with untreated manganese dioxide.
Abstract translation:用于一次锂电化学电池的锂化二氧化锰。 锂化二氧化锰通过用锂阳离子的液体源逐步处理制备,所述锂阳离子可以包括锂碱或低熔点锂盐的水溶液,从而形成锂化二氧化锰产物(图1)。 在锂基或熔融锂盐中的锂阳离子可以与二氧化锰晶格中的氢离子进行离子交换,并在随后的热处理期间还原性地插入晶格中的另外的锂离子形成锂化二氧化锰产物Li y MnO 3。 与未处理的二氧化锰相比,利用锂化二氧化锰产品作为活性阴极材料的一次锂电池表现出增加的工作电压和增强的高速率,低温和脉冲放电性能。
Abstract:
This invention relates to a method for treating an electrochemical cell containing an electrolytic solution, for example the cell of a lead storage battery. The method includes the step of disbursing fine particles of electrolytic manganese dioxide into the electrolytic solution of the cell. The particles of manganese dioxide may be supplied in a sachet, but are preferably supplied in a capsule that dissolves in the electrolytic solution of the cell.
Abstract:
A non-aqueous electrolyte comprising an organic solvent and a solute dissolved in the organic solvent, wherein the solute is a lithium salt containing at least one organic anion derived from at least one compound selected from the group consisting of phthalimide, a phthalimide derivative, phthalimidine and a phthalimidine derivative. The non-aqueous electrolyte is less prone to reaction with a negative electrode even during storage for a long period at a high temperature when used in a primary cell or a secondary cell. Accordingly, the non-aqueous electrolyte can provide a non-aqueous electrolyte cell excellent in storage stability, and a secondary cell having improved charge-discharge cycle characteristics.
Abstract:
The present invention is directed to a method of controlling a thermal printhead (18) of an identification card printing system (10) to provide improved image sharpness. In one step (32) of the method a pixel level of a non-compensated pixel PR,C is adjusted based upon a pixel level of one or more proximal pixel levels to form a compensated pixel P'R,C. In another step (34) of the method, the thermal printhead (18) is controlled to print the compensated pixel P'R,C. The present invention is further directed to an identification card printing system (10) which utilizes the above-described method to improve contrast in images printed with a thermal printhead (18).
Abstract:
Provided is a lithium primary battery in which the cathode comprises an electroactive sulfur-containing material and the electrolyte comprises one or more non-aqueous solvents and one or more voltage-enhancing reactive components, wherein the reactive components are non-electroactive but enhance the voltage of the lithium primary battery. Suitable voltage-enhancing reactive components include organic halides, inorganic halides, and phosphorus chalcogenides. Also are provided methods for making the lithium primary battery.
Abstract:
All-solid-state electrochemical cells and batteries employing very thin film, highly conductive polymeric electrolyte and very thin electrode structures are disclosed, along with economical and high-speed methods of manufacturing. A preferred embodiment is a rechargeable lithium polymer electrolyte battery. New polymeric electrolytes employed in the devices are strong yet flexible, dry and non-tacky. The new, thinner electrode structures have strength and flexibility characteristics very much like thin film capacitor dielectric material that can be tightly wound in the making of a capacitor. A wide range of polymers, or polymer blends, characterized by high ionic conductivity at room temperature, and below, are used as the polymer base material for making the solid polymer electrolytes. The preferred polymeric electrolyte is a cationic conductor. In addition to the polymer base material, the polymer electrolyte compositions exhibit a conductivity greater than 1 x 10 S/cm at 25 DEG C or below and contain an electrically conductive polymer, a metal salt, a finely divided ionic conductor, and a finely divided inorganic filler material. Certain rechargeable batteries of the invention provide high specific energy (250 to 350 Wh/kg) (gravimetric) and energy density (450 to 550 Wh/l) (volumetric), high cycle life (1000 cycles), low self-discharge and improved safety.
Abstract:
This invention relates to a method for treating an electrochemical cell containing an electrolytic solution, for example the cell of a lead storage battery. The method includes the step of disbursing fine particles of electrolytic manganese dioxide into the electrolytic solution of the cell. The particles of manganese dioxide may be supplied in a sachet, but are preferably supplied in a capsule that dissolves in the electrolytic solution of the cell.
Abstract:
Improved nonaqueous electrolytes for application in electrical storage devices such as electrochemical capacitors or high energy density batteries are disclosed. The electrolytes of the invention contain salts comprising alkyl substituted (wherein at least one alkyl group consists of five or more carbon atoms), cyclic delocalized heterocyclic cations, their perfluoro derivatives, and certain polyatomic anions, preferably inorganic perfluoro anions, these salts either used neat, or dissolved in organic solvents, preferably organic carbonate solvents, or liquid inorganic gases or combinations thereof, at a concentration of greater than 0.5M and preferably greater than 1.0M. Exemplary electrolytes comprise 1-methyl-3- n -pentylimidazolium hexafluorophosphate dissolved in a cyclic or acyclic organic carbonate, or methyl formate, or a combination thereof. These salts and these improved electrolytes have useful characteristics such as enhanced oxidative stability, wider liquid range, a wider electrochemical window, and high energy storage capabilities and power characteristics compared to prior art electrolytes. Electrochemical double layer capacitors using electrolytes of this invention permit high energy storage at high voltages.