The embodiment of the invention relates to an active material, an electrode, a secondary battery, a battery pack, and a vehicle. The present invention provides an active material and an electrode capable of realizing a secondary battery exhibiting excellent charge/discharge efficiency and cycle life performance, a secondary battery and a battery pack exhibiting excellent charge/discharge efficiency and cycle life performance, and a vehicle provided with the battery pack. According to an embodiment, an active material including a niobium titanium oxide phase having a monoclinic crystal structure is provided. The niobium titanium oxide phase has a crystal structure in which at least one (Nb, Ti) O6 octahedral site having a bond angle distortion of 0.8 [sigma] 2/deg2 or less is included in a unit cell, said octahedral site being configured so as to share only a vertex. The grain size of the niobium titanium oxide phase is in the range of 85-130 nm (inclusive).

    本发明的实施方案涉及活性物质、电极、二次电池、电池包及车辆。本发明提供一种能够实现显示出优异的充放电效率和循环寿命性能的二次电池的活性物质与电极、显示出优异的充放电效率和循环寿命性能的二次电池与电池包、以及具备该电池包的车辆。根据实施方案,提供一种包含具有单斜晶体结构的铌钛氧化物相的活性物质。铌钛氧化物相在其晶格中具有在晶胞中包含至少一个以仅共享顶点的方式构成的(Nb,Ti)O6八面体位点的键角畸变为0.8σ2/deg2以下的八面体位点的晶体结构。铌钛氧化物相的晶粒尺寸在85nm以上且130nm以下的范围内。


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    Title :

    Active material, electrode, secondary battery, battery pack, and vehicle


    Additional title:

    活性物质、电极、二次电池、电池包及车辆


    Contributors:

    Publication date :

    2024-09-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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