摘要:
A new cathode design has a first cathode active material of a relatively low energy density but of a relatively high rate capability contacted to the outer sides of first and second cathode current collectors and a second cathode active material having a relatively high energy density but of a relatively low rate capability in contact with the inner sides of the current collectors. The second cathode active material has a greater peripheral extend than the current collectors and the opposed layers of the first cathode active material between which it is sandwiched. This construction helps prevent delamination by promoting improved contact of the respective active materials to the current collectors. The present cathode design is useful for powering an implantable medical device requiring a high rate discharge application.
摘要:
A new cathode design has a first cathode active material of a relatively low energy density but of a relatively high rate capability contacted to a first cathode current collector and a second cathode active material having a relatively high energy density but of a relatively low rate capability in contact with a second cathode current collector, is described. The first and second cathode current collectors are connected to a common terminal lead. The present cathode design is useful for powering an implantable medical device requiring a high rate discharge application.
摘要:
The present invention provides a secondary battery which is less expensive, whose safety is extremely high, which is of large capacity as well as good cyclic characteristic, and which uses an aqueous solution for the electrolytic solution. A lithium secondary battery according to the present invention is constituted by including a positive electrode, formed by binding a positive-electrode raw-material mixture including a positive electrode active material, a negative electrode, formed by binding a negative-electrode raw-material mixture including a negative electrode active material, and an electrolytic solution, comprising an aqueous solution in which a lithium salt is dissolved, said positive electrode active material including at least one of a layered structure lithium-manganese composite oxide whose basic composition is LiMnO2 and an olivine structure lithium-iron composite phosphorus oxide whose basic composition is LiFePO4. The present lithium secondary battery can be used in the fields of communication appliances and information-related appliances, and as an electric source for electric automobiles and the like.
摘要:
A primary electrochemical cell includes a cathode including lambda-manganese dioxide (null-MnO2), an anode including lithium or a lithium alloy, a separator interposed between the cathode and the anode, and a non-aqueous electrolyte contacting the anode and the cathode.
摘要:
The present invention relates to the use of SVO classified to a particle size of about 25null to about 75null as a cathode active material in a lithium electrochemical cell. The cathode electrode is fabricated into an electrode assembly by overlaying it with an anode electrode and an intermediate separator. The reduced particle size of the SVO material means that a separator of reduced thickness is used, which provides space for more active materials in a casing of a given volume. The electrode assembly is then hermetically sealed in a casing and used as the power source for such devices as implantable medical devices.
摘要:
An electrode including a current collector and active material layers stacked on the current collector, and a lithium battery using the electrode. In the electrode, the active material layers include a complex binder having a fluorinated polymer and mesophase SiO2 particles homogenously combined therein.
摘要:
A re-balanced lithium ion secondary cell, particularly one comprising LiCoO2 cathode active material, is described. The preferred anode material is carbonaceous, and the couple is balanced to a ratio of the cathode active material to the anode material of from about 1.35 to about 2.25. This significantly improves the energy density of the secondary cell over that known by the prior art by increasing the charge voltage to at least 4.4V.
摘要:
The present invention provides a lithium manganese oxide, wherein a content of sulfur is not more than 0.32% by weight, and an averaged diameter of pores is not less than 120 nanometers, and the lithium manganese oxide is represented by Li1nullxMn2nullxnullyMyO4, where nullMnull is at least one of metals and 0.032nullxnull0.182; 0nullynull0.2, and also provides a non-aqueous electrolyte secondary battery using the above lithium manganese compound oxide as a positive electrode active material.
摘要翻译:本发明提供一种锂锰氧化物,其中硫含量不超过0.32重量%,孔的平均直径不小于120纳米,锂锰氧化物由Li1 + xMn2-x- yMyO4,其中“M”是金属中的至少一种,0.032 <= x <= 0.182; 0 <= y <= 0.2,并且还提供使用上述锂锰复合氧化物作为正极活性物质的非水电解质二次电池。
摘要:
An object of the invention is to provide a non-aqueous electrolyte secondary battery having a plateau in voltage in the 4-V region well comparable to that of lithium cobalt oxide, a high energy density, and cell characteristics such as safety, cycle properties, and high temperature storage properties. nullMeans for Resolutionnull A non-aqueous electrolyte secondary battery according to the present invention comprises a positive electrode containing a positive electrode active material admixed therein a lithium-containing complex oxide having a layered crystalline structure expressed by general formula LiXMnaCobO2(where X is a value of 0.9 or greater but not greater than 1.1, a is a value of 0.45 or greater but not greater than 0.55, b is a value of 0.45 or greater but not greater than 0.55, and the sum of a and b is greater than 0.9 but not greater than 1.1), together with either of a lithium cobalt oxide and a spinel-type lithium manganate; a negative electrode containing a negative electrode active material capable of intercalating and deintercalating lithium ions; a separator separating the positive electrode and the negative electrode; and a non-aqueous electrolyte.