摘要:
Good cycle performance and high discharge power characteristics are obtained with a non-aqueous secondary cell including a positive electrode containing as a positive electrode active material a mixture of a lithium-manganese composite oxide and a lithium-transition metal composite oxide containing at least Ni and Mn, and a negative electrode having as a negative electrode active material a material capable of intercalating and deintercalating lithium. Discharge of the non-aqueous secondary cell is controlled so that the end-of-discharge voltage of the non-aqueous secondary cell becomes equal to or higher than 2 V and lower than 3 V.
摘要:
A non-aqueous electrolyte secondary battery that uses a layered lithium-transition metal composite oxide as a positive electrode active material can alleviate reduction in battery capacity associated with charge-discharge cycling at high temperatures and can enhance elevated-temperature durability, that is, high-temperature cycle performance. A non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material capable of intercalating and deintercalating lithium, a negative electrode containing a negative electrode active material capable of intercalating and deintercalating lithium, and a non-aqueous electrolyte having lithium ion conductivity. The non-aqueous electrolyte secondary battery uses a layered lithium-transition metal composite oxide superficially coated with microparticles of Al2O3 as the positive electrode active material.
摘要翻译:使用层状锂过渡金属复合氧化物作为正极活性物质的非水电解质二次电池可以减轻与高温下的充放电循环相关的电池容量的降低,并且可以提高高温耐久性,即高 - 温度循环性能。 非水电解质二次电池包括含有能够插入和脱嵌锂的正极活性物质的正极,含有能够插入和脱嵌锂的负极活性物质的负极和具有锂离子传导性的非水电解质 。 非水电解质二次电池使用表面涂覆有Al 2 O 3 N 3的微粒的层状锂过渡金属复合氧化物作为正极活性物质。
摘要:
Elevated-temperature durability (i.e., high-temperature storage performance) is improved in a non-aqueous electrolyte secondary battery that uses a layered lithium-transition metal composite oxide as a positive electrode active material. A non-aqueous electrolyte secondary battery includes: a positive electrode containing a layered lithium-transition metal composite oxide as a positive electrode active material, a negative electrode containing a negative electrode active material capable of intercalating and deintercalating lithium, and a non-aqueous electrolyte having lithium ion conductivity. The lithium-transition metal composite oxide contains boron and at least one element selected from the group IVa elements of the periodic table.
摘要:
A lithium secondary battery is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte prepared by dissolving a solute in a non-aqueous solvent wherein a positive electrode active material of said positive electrode is composed of lithium-manganese composite oxide having a spinel structure and lithium-transition metal composite oxide having a layer structure containing at least nickel and lithium salt having oxalato complex as anion is admixed to said non-aqueous electrolyte.
摘要:
A lithium secondary battery is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte prepared by dissolving a solute in a non-aqueous solvent wherein a positive electrode active material of said positive electrode is composed of lithium-manganese composite oxide having a spinel structure and lithium-transition metal composite oxide having a layer structure containing at least nickel and lithium salt having oxalato complex as anion is admixed to said non-aqueous electrolyte.
摘要:
A positive electrode for a secondary battery and a secondary battery. A mixture of at least a lithium metal oxide with a hexagonal crystal structure (belonging to the R3m space group) containing nickel (Ni) and a lithium manganese oxide with a rhombic crystal structure (belonging to the Pmmn space group) is used for the positive electrode active material. Furthermore, it is preferable for the lithium metal oxide described above to include manganese (Mn) and more preferable for cobalt (Co) to be included to improve the stability of the crystal structure. In addition, it is preferable for the proportion of the lithium manganese oxide in the mixture described above to be from 20% by weight to 80% by weight.
摘要:
A positive electrode for a secondary battery and a secondary battery. A mixture of at least a lithium metal oxide with a hexagonal crystal structure (belonging to the R3m space group) containing nickel (Ni) and a lithium manganese oxide with a rhombic crystal structure (belonging to the Pmmn space group) is used for the positive electrode active material. Furthermore, it is preferable for the lithium metal oxide described above to include manganese (Mn) and more preferable for cobalt (Co) to be included to improve the stability of the crystal structure. In addition, it is preferable for the proportion of the lithium manganese oxide in the mixture described above to be from 20% by weight to 80% by weight.
摘要:
In a non-aqueous electrolyte secondary battery employing an olivine-type lithium phosphate as a positive electrode active material, power regeneration performance is improved. The non-aqueous electrolyte secondary battery for use as a power source for regenerative charging includes: a positive electrode including a mixture layer containing a positive electrode active material, a binder agent, and a carbon material as a conductive agent; a negative electrode; and a non-aqueous electrolyte. The mixture layer contains, as the positive electrode active material, an olivine-type lithium phosphate represented by the formula LiMPO4, where M is at least one element selected from the group consisting of Co, Ni, Mn, and Fe, and the mixture layer further contains a metal oxide such as a lithium-containing transition metal oxide containing at least Ni or Mn.
摘要:
In a non-aqueous electrolyte secondary battery using a layered lithium-transition metal composite oxide as a positive electrode active material, elevated-temperature durability, that is, elevated-temperature storage performance is enhanced without degrading battery capacity. The non-aqueous electrolyte secondary battery includes: a positive electrode including, as a positive electrode active material, layered lithium-transition metal composite oxide containing lithium, nickel, and manganese; a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte having lithium ion conductivity, and the lithium-transition metal composite oxide contains a group IVA element and a group IIA element of the periodic table.
摘要:
In a non-aqueous electrolyte secondary battery using a layered lithium-transition metal composite oxide as a positive electrode active material, elevated-temperature durability, that is, elevated-temperature storage performance is enhanced without degrading battery capacity. The non-aqueous electrolyte secondary battery includes: a positive electrode including, as a positive electrode active material, layered lithium-transition metal composite oxide containing lithium, nickel, and manganese; a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte having lithium ion conductivity, and the lithium-transition metal composite oxide contains a group IVA element and a group IIA element of the periodic table.