Spinel-type lithium metal composite oxide

• Main Authors: IDE HITOHIKO, WASHIDA DAISUKE, HOSHI YUJI, HATA YOSHIMI
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Provided is a spinel-type lithium metal composite oxide that makes it possible to achieve excellent high-temperature storage characteristics when used as a positive electrode active material of a lithium battery. The spinel-type (Fd-3m) lithium metal composite oxide is characterized by the oxygen occupancy (OCC) thereof as determined by the Rietveld method being 0.965-1.000, the lattice strain thereof as determined by the Williamson-Hall method being 0.015-0.090, and the ratio (Na/Mn) of the molar content of Na to the molar content of Mn satisfying 0.00 < Na/Mn < 1.00*10-2. 本发明提供种尖晶石型锂金属复合氧化物，其用作锂电池的正极活性物质时，能够发挥优异的高温保存特性。本发明提出了种尖晶石型(Fd?3m)锂金属复合氧化物，其中，利用Rietveld法求出的氧占位度(OCC)为0.965～1.000，且利用威廉姆森霍尔法求出的晶格应变为0.015～0.090，且Na含有摩尔量相对于Mn含有摩尔量的比例(Na/Mn)为0.00<Na/Mn<1.00×10。