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发明公开
CN110600725A 非水电解质电池 无效 - 驳回

非水电解质电池
摘要：
根据一个实施方式，提供一种非水电解质电池。该非水电解质电池具备负极、正极和非水电解质。负极包含负极活性物质粒子。负极活性物质粒子包含尖晶石型钛酸锂。负极具有下述表面状态：通过对表面的光电子分光测定得到的Li原子存在比率ALi与Ti原子存在比率ATi之比ALi/ATi在45℃环境下的充放电循环试验中，每1循环以0.002以上且0.02以下的速度增加。Li原子存在比率ALi由在52eV～58eV的结合能区域出现的源自Li的1s轨道的峰算出。Ti原子存在比率ATi由在455eV～462eV的结合能区域出现的源自Ti的2p轨道的峰算出。
摘要（英）：

According to an embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte includes a negative electrode, a positive electrode and a nonaqueous electrolyte. The negative electrode includes negative electrode active material particles. The negative electrode active material particles include a spinel-type lithium titanate. The negative electrode has such a surface state that a ratio A Li /A Ti of an Li atom abundance ratio A Li to a Ti atom abundance ratio A Ti , according to a photoelectron spectroscopic measurement for a surface, is increased at a rate of 0.002 to 0.02 per cycle in a charge-and-discharge cycle test. The charge-and-discharge cycle test is to be performed in a 45 DEG C environment. The Li atom abundance ratio A Li is calculated from a peak derivedfrom a Li 1s-orbital that appears in a binding energy region of 52 eV to 58 eV. The Ti atom abundance ratio A Ti is calculated from a peak derived from a Ti 2p-orbital that appears in a binding energyregion of 455 eV to 462 eV.

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