摘要:
In a nonaqueous electrolyte secondary battery including a positive electrode (11) whose surface has a positive electrode mixture layer containing a mixture of a conductive carbon material and a positive electrode active material containing a lithium-containing transition metal composite oxide having a layer structure and represented by the general formula LiaNixM(1-x)O2 (where M represents one or more kinds of elements, and a and x satisfy the conditions 0
摘要:
A non-aqueous electrolyte secondary battery is provided that uses as a positive electrode active material a low-cost lithium-containing transition metal composite oxide containing Ni and Mn as its main components, to improve the output power characteristics so that it can be used suitably for an electric power source for, for example, hybrid electric vehicles. A non-aqueous electrolyte secondary battery has a positive electrode (11) containing a positive electrode active material, a negative electrode (12) containing a negative electrode active material, and a non-aqueous electrolyte solution (14) in which a solute is dissolved in a non-aqueous solvent. In the positive electrode active material, Nb2O5 in which the amount of niobium is 0.5 mol % with respect to the total amount of the transition metals and TiO2 in which the amount of titanium is 0.5 mol % with respect to the total amount of the transition metals are disposed on a surface of Li1.06Ni10.56Mn10.38O2.
摘要翻译:提供一种非水电解质二次电池,其使用含有Ni和Mn作为其主要成分的低成本含锂过渡金属复合氧化物作为正极活性物质,以提高输出功率特性,使其可以适当地使用 用于例如混合动力电动车辆的电力源。 非水电解质二次电池具有含有正极活性物质的正极(11),含有负极活性物质的负极(12)和溶解有溶质的非水电解液(14) 在非水溶剂中。 在正极活性物质中,相对于过渡金属的总量,钛的含量相对于过渡金属的总量为0.5摩尔%,其中铌的量为0.5摩尔%的Nb 2 O 5 设置在Li1.06Ni10.56Mn10.38O2的表面上。
摘要:
A positive electrode active material of a nonaqueous electrolyte secondary battery is improved by using an inexpensive lithium transition metal oxide containing nickel and manganese as main components. Output characteristics of the battery under various temperature conditions are thereby improved, and the battery is suitable as a power supply of a hybrid vehicle. The battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a nonaqueous electrolyte prepared by dissolving a solute in a nonaqueous solvent. The positive electrode active material includes positive electrode active material particles composed of a lithium transition metal complex oxide having a layered structure containing nickel and manganese as main components, and at least one niobium-containing material selected from a Li—Nb—O compound and a Li—Ni—Nb—O compound, the at least one niobium-containing material being sintered onto surfaces of the positive electrode active material particles.
摘要:
A non-aqueous electrolyte secondary battery including a positive electrode having a positive electrode mixture layer containing a positive electrode active material, a binder, and a conductive agent, and a negative electrode having a negative electrode active material capable of intercalating and deintercalating lithium. The positive electrode active material includes a layered lithium-transition metal composite oxide represented by the compositional formula LiaNixM(1-x)O2 where 0
摘要:
A nonaqueous electrolyte secondary battery which has a positive electrode containing lithium cobalt oxide as a positive active material, a negative electrode containing a graphite material and a nonaqueous electrolyte solution containing ethylene carbonate as a solvent and which is charged with an end-of-charge voltage of at least 4.3 V. Characteristically, the battery uses, as the positive active material, lithium cobalt oxide obtained by firing a mixture of a lithium salt, tricobalt tetraoxide (Co3O4) and a zirconium compound and having particle surfaces onto which the zirconium compound adheres.
摘要翻译:具有含有作为正极活性物质的钴酸锂的正极的非水电解质二次电池,含有石墨材料的负极和含有碳酸亚乙酯作为溶剂的非水电解液,并充入充电电压 特别地,电池使用通过焙烧锂盐,四氧化四钴(Co 3 O 4)和锆化合物并具有锆化合物附着的颗粒表面的混合物而获得的钴酸锂作为正极活性材料 。
摘要:
The storage characteristics in a charged state are improved in a non-aqueous electrolyte secondary battery containing a lithium cobalt oxide as a positive electrode active material. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material other than metallic lithium; and a non-aqueous electrolyte. The positive electrode active material contains a lithium cobalt oxide as its main component. The non-aqueous electrolyte contains 0.1 to 10 volume % of a compound having an ether group. The positive electrode active material and the negative electrode active material are contained so that the charge capacity ratio of the negative electrode to the positive electrode is from 1.0 to 1.2 when the battery is charged until the potential of the positive electrode reaches 4.4 to 4.5 V (vs. Li/Li+)
摘要:
A non-aqueous electrolyte secondary battery including a positive electrode containing a positive active material, a negative electrode containing a negative active material and a non-aqueous electrolyte, characterized in that lithium transition metal complex oxide A formed by allowing LiCoO2 to contain at least both of Zr and Mg and lithium transition metal complex oxide B having a layered structure and containing at least both of Mn and Ni as transition metals are mixed and used as said positive active material, and vinylene carbonate and divinyl sulfone are contained in said non-aqueous electrolyte.
摘要:
A nonaqueous electrolyte secondary battery comprising a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte is characterized in that the positive electrode active material is composed of a lithium trasition metal oxide having a layer structure and containing Li and Co and further contains a group IVA element and group IIA element of the periodic table.
摘要:
Capacity degradation due to charge/discharge cycles is suppressed in either a non-aqueous electrolyte secondary cell provided with a positive electrode including, as a positive electrode active material, a lithium-transition metal complex oxide having a layered structure and containing at least Ni and Mn as transition metals, and a negative electrode containing a carbon material as a negative electrode active material and having a higher initial charge-discharge efficiency than that of the positive electrode, or an assembled battery having a plurality of cells each of which is the secondary cell. A control circuit incorporated in the secondary cell or the assembled battery, or in an apparatus using the secondary cell or the assembled battery, monitors the voltage of the secondary cell or each of the cells in the assembled battery so that the end-of-discharge voltage of each cell is 2.9 V or higher.
摘要:
A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y
摘要翻译:一种通过在正极芯材上涂布正极合剂制备正极来制造非水电解质二次电池的方法,该混合物含有主要由锂镍复合氧化物制成的正极活性物质和含有 聚偏氟乙烯; 测量当正极混合物层从正极中除去并且在惰性气体气氛中将层加热至200℃以上且400℃以下时产生的二氧化碳气体的量; 选择满足以下公式的正极:y <(1.31x-258)/ 1000000(200&nlE; x <300)式3 y <1.20×225/1000000(300&nlE; x&nlE; 400)式4其中x是加热 温度(℃),y是测量每1g镍镍复合氧化物的二氧化碳气体量(摩尔/克); 并通过使用所选择的正极制备非水电解质二次电池。