摘要:
The positive electrode active material of the present invention is characterized in that its main component is a lithium metal oxide, and the lithium concentration at the surface portion of the primary particles that make up the active material is lower than that in the interior thereof. There will be less increase in internal resistance with a secondary cell made using this active material. The above-mentioned active material can be manufactured, for example, by bringing the raw active material into contact with a treatment liquid containing metal ions, and thereby lowering the lithium concentration at the surface portion of the primary particles that make up the raw active material.
摘要:
The present invention provides an alkaline dry battery which has excellent heavy load and intermediate load discharge characteristics, and in which reduction in light load discharge characteristic is suppressed. In the alkaline dry battery comprising: a negative electrode; an alkaline electrolyte; and a positive electrode comprising manganese dioxide and a graphite powder, the positive electrode is added with an additive selected from the group consisting of Ti(OH)4 and Ti(OH)2.
摘要:
Disclosed is an electrolyte of a lithium secondary battery comprising a lithium salt, an organic solvent, and at least one additive compound selected from the group consisting of compounds represented by the following formula (1) and derivatives thereof: 1 where R1 is selected from the group consisting of hydrogen radicals, alkyls aryls, cycloalkyls, alkenyls, alkynyls, ester radicals, and aliphatic carbonate radicals. The electrolyte improves both swelling inhibition properties at high temperature and capacity characteristics of a lithium secondary battery.
摘要:
A nonaqueous electrolyte secondary battery is provided with a positive electrode including a positive-electrode active material, a negative electrode including a negative-electrode active material, and a nonaqueous electrolyte solution. The negative electrode further includes carbon fibers and carbon flakes. The synergistic effects of the improved retention of the electrolyte solution by the carbon fibers and the improved conductivity between the active material particles by the carbon flakes facilitate doping/undoping of lithium in a high-load current mode and increase the capacity of the battery in the high-load current mode.
摘要:
A flat elongated alkaline battery comprising an outer metal housing and plurality of individual alkaline cells housed therein. The outer housing has at least a major surface which is a flat polygon. Preferably the outer metal housing is a cuboid. The individual cells comprise an anode slab comprising zinc, cathode slab, comprising manganese dioxide and separator therebetween. Each cell is formed by stacking the anode, separator, and cathode body to body. Each cell has at least one surface which is polygonal. The individual cells are preferably aligned in a row edge to edge to form a pack of cells having the same thickness as the thickness of an individual cell. The pack of cells are inserted into a common hydrogen permeable plastic container and encased therein. The cells encased in the plastic container are housed within the interior of the metal outer casing. The cells are electrically connected in parallel to the battery positive and negative terminals. In an alternative embodiment the flat elongated alkaline battery comprises only a single alkaline cell encased within a hydrogen permeable plastic container which is housed within the interior of a metal housing. The outer metal housing is preferably a cuboid.
摘要:
A cathode active material for a lithium-ion secondary battery includes a spinel lithium manganese composite oxide expressed by the general formula: Lia(NixMn2nullxnullqnullrQqRr)O4, wherein 0.4nullxnull0.6, 0
摘要翻译:用于锂离子二次电池的正极活性材料包括由以下通式表示的尖晶石锂锰复合氧化物:Lia(NixMn2-xq-rQqRr)O4,其中0.4 <= x <= 0.6,0
摘要:
Alkaline electrochemical cells with substantially increased performance characteristics have a porous anode, with a porosity equal to or greater than 69%, and a porous cathode, comprising manganese dioxide and having a porosity equal to or greater than 26%.
摘要:
In a nonaqueous electrolyte rechargeable battery in which a positive electrode plate (1) and a negative electrode plate (2) are superimposed with a separator (3) interposed between them, and are accommodated in a battery case (4) together with electrolyte, corona discharge treatment is performed on the positive electrode material (1a) or the manufactured positive electrode plate (1). Improved affinity between the positive electrode material (1a) of the positive electrode plate (1) and the electrolyte shortens the pouring time of the electrolyte and enables the lithium ions (10) to easily reach the surface of the positive electrode material (1a), thereby improving the charging/discharging characteristic of the battery.
摘要:
A lithium secondary battery superior in the suppression of increasing internal resistance ratio and discharge capacity maintenance ratio and being simple in structure and inexpensive. A lithium secondary battery comprises a positive active material comprising a lithium aluminum manganese oxide having a spinel structure and an aluminum compound other than the lithium aluminum manganese oxide. A ratio of an amount of aluminum contained in the aluminum compound to a total amount of aluminum contained in the positive active material is within a range of 1% by weight or more to 50% by weight or less. The lithium aluminum manganese oxide is represented by a general formula Li1nullxAlyMn2nullxnullyO4, wherein x and y denote constituting ratios of elements in one molecule, xnull0, ynull0.01, and has a lattice constant of 8.245 null or less. A part of Mn may be replaced with an element other than Li and Al.
摘要:
A MEMS volumetric lithium-ion battery formed using a soft lithography technique. The battery includes a reduced footprint area with a corresponding increase in capacity by exploiting the Z dimension through increased volume, while utilizing a chemistry capable of one Joule per cubic millimeter. The battery may be manufactured to cell sizes of one millimeter and cell volumes of one cubic millimeter. The battery can be formed into battery banks, electrically connected in series and parallel, and integrated into a system-on-a-chip. The battery may also be implemented for on-board applications and is suitable for space, air, and terrestrial applications, and in particular, for providing a MEMS volumetric battery.