摘要:
There is described in the specification a mercury-free manganese primary dry battery wherein the cathode mixture contains boric acid or an alkali borate at a ratio of 0.04 to 0.4 parts by weight per 100 parts by weight of manganese dioxide as a boron conversion value or wherein the separator contains boric acid or an alkali borate at a ratio of 0.1 to 8.0 parts by weight per 100 parts by weight of a dry solid content in the pasting agent. Such battery has excellent discharge properties under light loading conditions.
摘要:
A method of making a battery having a cathode includes contacting carbon particles with an oxidizing agent, such as, for example, an inorganic acid, an organic acid, or an oxidizing gas, and incorporating the carbon particles into the cathode. The cathode can be used, for example, in a metal-air battery that includes a monolayer or dual-layer cathode, or in a fuel cell.
摘要:
A process for manufacture of manganese dioxide comprising subjecting an aqueous bath comprising manganese sulfate (MnSO4) and sulfuric acid (H2SO4) to electrolysis in a closed cell wherein the electrolysis bath is maintained at an elevated temperature above 110null C., preferably above 115null C. and at superatmospheric pressure. Desirably the bath can be maintained at an elevated temperature between about 115null C. and 155null C. The electrolysis is carried out preferably at elevated current density of between about 12.5 and 37 Amp/sq.ft (135 and 400 Amp/sq. meter) of the anode surface which allows for smaller or fewer electrolysis units. An MnO2 product having a specific surface area (SSA) within desired range of between 18-45 m2/g can be obtained. A doping agent, preferably a soluble titanium dopant can also be employed to help obtain the desired specific surface area (SSA) of the MnO2 product. The manganese dioxide product when used as cathode active material in zinc/MnO2 alkaline cells results in excellent service life, particularly when the cell is used in high power application.
摘要:
A lithium battery includes a negative electrode, a positive electrode, a separator, and a non-aqueous electrolyte solution between the negative and the positive electrodes. At least the negative electrode material and the positive electrode material are provided with a pattern of holes which accommodate a polymeric material which sticks and presses the negative electrode, the positive electrode and the separator together. In order to decrease the tendency of the electrolyte solution to sublime, thereby expanding the packaging material around the battery, the non-aqueous electrolyte solution comprises a solution of lithium salts, solvent molecules and a polymer, forming a gel-electrolyte.
摘要:
Rechargeable batteries based on the ‘rocking chair’ principle and alkali or alkaline earth insertion compounds are disclosed that employ aqueous electrolytes. Batteries of the invention can have energy densities comparable to conventional aqueous batteries. Embodiments of the invention include aqueous lithium ion batteries.
摘要:
A display system includes a printed display formed on a substrate and a printed battery in electrical communication with the printed display. The printed display provides power to the printed display. Since both the display and battery are printed, the resulting display system is extremely thin and the manufacture thereof is reliable and inexpensive. The display system contemplates various types of printed displays such as an electrochromic display, a thermochromic display, an electroluminescent display, or an electrophoretic display.
摘要:
The invention relates to novel manganese dioxide electrodes containing modified, electrochemically active manganese dioxide, a method for their production and their use in primary electrochemical cells. The manganese dioxide electrode contains coated or uncoated inorganic particles, in which the carrier particles consist of a material chosen from the group: mica, SiO2, Al2O3, ZrO2 and ZnO.
摘要翻译:本发明涉及含有改性的电化学活性二氧化锰的新型二氧化锰电极,其生产方法及其在初级电化学电池中的应用。 二氧化锰电极包含涂覆或未涂覆的无机颗粒,其中载体颗粒由选自云母,SiO 2,Al 2 O 3,ZrO 2和ZnO的材料组成。
摘要:
The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising sulfuric acid and manganese sulfate in the electrolytic cell, the manganese sulfate being present in the solution whereby it contains in the range of from about 5 to about 50 grams of manganese per liter of solution. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot.
摘要:
A galvanic cell has an anode gel, an alkaline electrolyte, and a cathode material, separated from the anode gel by a separator. The anode gel has mercury-free zinc powder, and the cathode material has manganese dioxide, as well as salt-like calcium compounds in solid form.