Active material for battery, non-aqueous electrolyte battery and battery pack
A non-aqueous electrolyte and active material technology, applied in non-aqueous electrolyte batteries, battery electrodes, lithium batteries, etc., can solve the problems of low energy density and low capacity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0024] In the first embodiment, there is provided an active material for batteries containing a composite oxide containing niobium and titanium. The battery active material has a particle shape and is typically used as a powder. The battery active material can be used in a non-aqueous electrolyte secondary battery, typically a negative electrode.
[0025] In the active material, the number of moles of niobium M Nb Relative to the number of moles of titanium M Ti ratio of M Nb / M Ti Any one of the following formulas (I) and (II) is satisfied.
[0026] 0.5M Nb / M Ti <2(I)
[0027] 2Nb / M Ti <5(II)
[0028] The active material of the present embodiment is mainly composed of a composite oxide containing niobium and titanium. The active material may contain only a composite oxide containing niobium and titanium. Alternatively, the active material may contain, for example, titanium oxide such as titanium dioxide, in addition to the composite oxide of niobium and titanium....
no. 2 approach
[0065] In the second embodiment, there is provided a nonaqueous electrolyte battery including a negative electrode containing the battery active material of the first embodiment, a positive electrode, a nonaqueous electrolyte, a separator, and an exterior member.
[0066] image 3 and 4 A flat nonaqueous electrolyte secondary battery is shown as an example of the nonaqueous electrolyte battery. image 3 is a cross-sectional view of the battery 10, Figure 4 yes image 3 An enlarged cross-sectional view of part A. In addition, each figure is a schematic diagram for facilitating the description and understanding of the embodiment, and the shape, size, ratio, etc. are different from the actual device, but design changes can be appropriately made with reference to the following description and known techniques. .
[0067] The battery 10 includes a pouch-shaped exterior member 2 and a flat wound electrode group 1 accommodated in the exterior member 2 . A non-aqueous electroly...
no. 3 approach
[0113] Next, a battery pack according to a third embodiment will be described with reference to the drawings. The battery pack has one or more nonaqueous electrolyte batteries (single cells) of the second embodiment described above. When a plurality of cells are included, the cells are arranged electrically connected in series or in parallel.
[0114] Figure 7 and Figure 8 An example of the battery pack 20 is shown. The battery pack 20 contains multiple image 3 The flat type battery 21 of the structure shown. Figure 7 is an exploded perspective view of the battery pack 20, Figure 8 yes means Figure 7 A block diagram of the electrical circuit of the battery pack 20.
[0115] The plurality of single cells 21 are stacked so that the negative terminal 6 and the positive terminal 7 extending outward are directed in the same direction, and are fastened with an adhesive tape 22 to form a battery pack 23 . These cells 21 as Figure 8 are shown electrically connected in ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More