Electrode, laminate, lithium ion secondary battery, battery pack, and vehicle
A secondary battery and lithium-ion technology, applied in the field of laminates and electrodes, can solve problems such as inability to perform good cycles, and achieve excellent low-temperature characteristics and excellent rate characteristics.
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no. 1 Embodiment approach
[0035] According to the first embodiment, an electrode is provided. The electrode includes an active material-containing layer including lithium ion conductive active material particles and first ion conductive solid electrolyte particles separated from the active material particles. The solid electrolyte particles contain first ions that are at least one kind selected from the group consisting of alkali metal ions other than lithium ions, Ca ions, Mg ions, and Al ions.
[0036] refer to figure 1 and figure 2 The reason why the electrode of the embodiment can realize a lithium ion secondary battery exhibiting excellent rate characteristics and low-temperature characteristics will be described. figure 1 It is a diagram schematically showing the conduction of lithium ions in the active material-containing layer according to the embodiment. figure 2 It is a diagram schematically showing the conduction of lithium ions in the active material-containing layer of the reference e...
no. 2 Embodiment approach
[0128] According to the second embodiment, there is provided a laminated body. The laminate includes an electrode including an active material layer and a solid electrolyte layer. The active material-containing layer contains lithium ion conductive active material particles. The solid electrolyte layer includes first ion-conductive solid electrolyte particles separated from the active material particles. The first ion is at least one selected from the group consisting of alkali metal ions other than lithium ions, Ca ions, Mg ions, and Al ions.
[0129] In the first embodiment, the case where the electrode includes the first ion-conductive solid electrolyte particles has been described, but as long as the first ion-conductive solid electrolyte particles exist apart from the active material particles, the electrode does not need to include the second ion-conductive solid electrolyte particles. 1 Ion-conductive solid electrolyte particles.
[0130] Specifically, a laminate hav...
no. 3 Embodiment approach
[0152] According to the third embodiment, there is provided a lithium ion secondary battery. A lithium ion secondary battery includes a nonaqueous electrolyte and the electrode of the first embodiment. Alternatively, a lithium ion secondary battery may include a nonaqueous electrolyte and the laminate of the second embodiment. A lithium ion secondary battery includes, for example, a positive electrode, a negative electrode, and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode may be the electrode described in the first embodiment.
[0153] The lithium ion secondary battery may further include a solid electrolyte layer and a separator. When at least one of the positive electrode and the negative electrode is the electrode of the first embodiment, the lithium ion secondary battery may include a separator without including a solid electrolyte layer.
[0154] The non-aqueous electrolyte can be held in electrodes, laminates or electrode...
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